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Download Lot 3B - Construction of Substations. Technical Data sheets
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Lot 3B - Construction of Substations. Technical Data sheets Contents DEFINITIONS AND ABBREVIATIONS Table 1: 132/33 kV 23 MVA Power Transformers and On-Load Tap Changer Table 2: 132/11 kV 10 MVA Power Transformer – On load Tap changer (not in this scope) Table 3: 132/11 kV 7.5 MVA Power Transformer and On load Tap changer Table 4: 132/11 kV 5 MVA Power Transformer – On load Tap changer (not in this scope) Table 5: 132 kV Circuit Breaker Table 6: 132 kV Isolators with Earthing Switches Table 7: 132 kV XLPE Cable Table 8: 33kV Outdoor Circuit Breaker Table 9: 33 kV Isolators with Earthing Switches Table 10: 132 kV Voltage Transformer Table 11: 132kV Current Transformer Table 12: 132kV Surge Arresters Table 14:33kV Surge Arresters Table 15: Busbar Conductor ACSR 435/55 mm² Table 16: Busbar Shield Wire Table 17: 33kV Current Transformer Table 18: 33kV Surge Arresters Table 19: 132kV Dead-End and Suspension Insulators - Discs Table 20: 132kV Post-Type Insulators Table 21: 33/0.4kV Auxiliary Transformer Table 22: Low Voltage AC Distribution Panel for Auxiliary Services Table 23: Battery Bank 110 V DC, 300 Ah Table 24: Battery Charger Table 25: Protection Relays Table 26: Telecommunication System Table 27: Control and Monitoring System The Kenya Electricity Transmission Company Limited 2 3 9 13 17 21 25 27 35 38 40 41 43 46 48 50 51 53 54 55 56 58 60 61 63 79 81 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets DEFINITIONS AND ABBREVIATIONS The following terms may be met in these Technical Schedules and shall be interpreted as follows: Hz shall mean hertz kW shall mean kilowatt MW shall mean megawatt VA (kVA, MVA) shall mean volt-ampere (kilo-, mega-) A (kA) shall mean ampere (kilo-) V (kV) shall mean volt (kilo-) W/m shall mean watt per metre AC shall mean alternating current DC shall mean direct current IN shall mean rated (nominal) current UN shall mean rated (nominal) voltage Ah shall mean ampere-hours lm shall mean lumen lm/w shall mean lumen per watt min shall mean minute min. shall mean minimum (prefix) shall mean micro rms shall mean root mean square p.u. shall mean per unit p/p shall mean peak to peak T shall mean Tesla kg shall mean kilogram N shall mean Newton l shall mean litre s or sec. shall mean second No. shall mean number dB shall mean decibel Amp shall mean amperes F shall mean Farad oC shall mean centigrade K shall mean degree Kelvin m2 shall mean square metre (mm2 for millimetre, etc) m3 shall mean cubic metre (mm3 for millimetre, etc) m3/s shall mean cubic metres per second m shall mean metre cm shall mean centimetre mm shall mean millimetre joules shall mean joules per hour tonne shall mean metric tonne % shall mean percentage Pascal 1 N/m2 cst shall mean centistoke The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 1: 132/33 kV 23 MVA Power Transformers and On-Load Tap Changer Minimum Requirements Description Unit Manufacturer Data to be specified Type 3-phase, oilimmersed, with on-load tap changer Installation Rated maximum voltage (Primary / Secondary) Data offered by Bidder outdoor kV 145 / 36 Primary side (high voltage) kV 132 Secondary side (low voltage) kV 33 HV, principal tapping kV to be specified HV, extreme plus tapping kV to be specified HV, extreme minus tapping kV to be specified LV kV to be specified MVA 23 Hz 50 A to be Rated service voltage Rated no-load voltage at rated frequency on: Rated power ONAN [Performance Guarantee] Rated frequency Rated current Primary side (high voltage) The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data offered by Bidder Data specified Secondary side (low voltage) A Vector group to be specified Dyn1 Impedance voltage of: ONAN centre tap % Insulation 9.8 uniform Type of cooling ONAN Tapping range ± 1.67% in ± 8 steps No-load losses at rated frequency and 100% voltage maximum value [Performance Guarantee] kW to be specified ONAN kW to be specified ONAF kW to be specified Load losses at rated frequency and 100% voltage (75°C) - maximum value: [Performance Guarantee] Material of winding copper Temperature rise at rated power over 40°C maximum ambient [Performance Guarantee] oil (upper level) °C 55 winding °C 60 kV 275/70 HV windings kV peak 650 LV windings kV peak 170 Rated power frequency withstand voltage HV/LV Rated lightning impulse withstand voltage: The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data At principal tap: high voltage - low voltage / phase to be specified At extreme plus tap: high voltage - low / phase to be specified / phase to be specified dB (A) 70 % In 0.2 Data offered by Bidder Short circuit impedance referred to the first winding in the following pairs: [Performance Guarantee] voltage At extreme minus tap: high voltage - low voltage Maximum noise level (Lp) [Performance Guarantee] Maximum no-load current Painting Admiralty Grey shade No. 632 as per BS 381C Dimensions length mm to be specified width mm to be specified height mm to be specified distance between wheels' centres mm to be specified Total weight kg to be specified Oil weight kg to be specified Applicable standard(s) IEC 60076 IEC 60354 Transformer Bushings The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Data offered by Bidder Unit Data HV A 120% of IN LV A 120% of IN HV kV 132 LV kV 33 HV, neutral kV To specified be LV, neutral kV to specified be HV bushing kV to specified be LV bushing kV to specified be TV bushing kV to specified be HV, LV neutral bushings kV to specified be HV bushing kV to specified be LV bushing kV to specified be TV bushing kV to be Maximum current carrying capacity of bushings: Rated service voltage of bushings: 1 minute, 50 Hz dry withstand voltage: 1 minute, 50 Hz wet withstand voltage: The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data offered by Bidder Data specified HV, LV neutral bushings kV to specified be HV bushing kV to specified be LV bushing kV to specified be Impulse withstand voltage: On-Load Tap Changer Manufacturer to be specified Type Rated current to be specified A 175 1 second (maximum) kA 31.5 3 seconds kA to specified Rated short-time current Step voltage V Number of steps to be specified 17 On-load tap changer Minimum number of operations be ±8 x 1.67% operations 200,000 Motor drive Type Supply voltage The Kenya Electricity Transmission Company Limited to be specified V 400/230 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data kV rms to be specified Voltage to earth kV rms to be specified Impulse test voltage kV peak to be specified One-minute power frequency test voltage kV rms to be specified kV peak to be specified kV rms to be specified kV peak to be specified kV rms to be specified kV peak to be specified kV rms to be specified Insulation level voltage to earth Data offered by Bidder Insulation level (50 Hz) Internal insulation levels / one-minute power frequency test voltage: between selected and pre-selected tap across fine tap winding between phases of fine tap winding The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 2: 132/11 kV 10 MVA Power Transformer – On load Tap changer Description Minimum Requirements Unit Data Manufacturer kV to be specified 3-phase, oilimmersed, with on-load tap changer outdoor 145 / 36 kV kV 132 33 HV, principal tapping kV HV, extreme plus tapping kV HV, extreme minus tapping kV LV kV to be specified to be specified to be specified to be specified Type Installation Rated maximum voltage (Primary / Secondary) Rated service voltage Primary side (high voltage) Secondary side (low voltage) Data offered by Bidder Rated no-load voltage at rated frequency on: Rated power ONAN [Performance Guarantee] Rated frequency Rated current Primary side (high voltage) Secondary side (low voltage) Vector group Impedance voltage of: ONAN centre tap Insulation Type of cooling Tapping range No-load losses at rated frequency and 100% voltage - maximum value [Performance Guarantee] Load losses at rated frequency and 100% voltage (75°C) - maximum value: [Performance Guarantee] ONAN ONAF The Kenya Electricity Transmission Company Limited MVA 10 Hz 50 A to be specified to be specified Dyn1 A % kW kW kW 9.8 uniform ONAN ± 1.67% in ± 8 steps to be specified to be specified to be 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data specified copper Material of winding Temperature rise at rated power over 40°C maximum ambient [Performance Guarantee] oil (upper level) Winding Rated power frequency withstand voltage HV/LV Rated lightning impulse withstand voltage: HV windings LV windings °C °C kV 55 60 275/70 kV peak kV peak 650 170 Short circuit impedance referred to the first winding in the following pairs: [Performance Guarantee] At principal tap: high voltage - low voltage / phase to be specified to be specified to be specified 70 At extreme plus tap: high voltage - low voltage / phase At extreme minus tap: high voltage - low voltage / phase Maximum noise level (Lp) [Performance Guarantee] Maximum no-load current Painting Data offered by Bidder dB (A) % In 0.2 Admiralty Grey shade No. 632 as per BS 381C Dimensions Length mm Width mm Height mm distance between wheels' centres mm to be specified to be specified to be specified to be specified to be specified to be specified IEC 60076 IEC 60354 Total weight kg Oil weight kg Applicable standard(s) Transformer Bushings Maximum current carrying capacity of bushings: HV LV The Kenya Electricity Transmission Company Limited A A 120% of IN 120% of IN 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Rated service voltage of bushings: HV LV HV, neutral LV, neutral 1 minute, 50 Hz dry withstand voltage: HV bushing Unit Data kV kV kV 132 33 kV kV LV bushing kV TV bushing kV HV, LV neutral bushings kV 1 minute, 50 Hz wet withstand voltage: HV bushing kV LV bushing kV TV bushing kV HV, LV neutral bushings kV Impulse withstand voltage: HV bushing LV bushing kV kV Data offered by Bidder to be specified to be specified to specified to specified to specified to specified be to specified to specified to specified to specified be be be be be be be to be specified to be specified On-Load Tap Changer Manufacturer Type Rated current Rated short-time current 1 second (maximum) 3 seconds kA kA Step voltage V The Kenya Electricity Transmission Company Limited A to be specified to be specified 175 31.5 to be specified to be 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Number of steps On-load tap changer Minimum number of operations Motor drive Type Supply voltage Insulation level voltage to earth Insulation level Voltage to earth Impulse test voltage One-minute power frequency test voltage (50 Hz) Internal insulation levels / one-minute power frequency test voltage: between selected and pre-selected tap Unit Data operations specified 17 ±8 x 1.67% 200,000 V kV rms kV rms kV peak kV rms kV peak kV rms across fine tap winding kV peak kV rms between phases of fine tap winding kV peak kV rms The Kenya Electricity Transmission Company Limited Data offered by Bidder to be specified 400/230 to be specified to be specified to be specified to be specified to be specified to be specified to be specified to be specified to be specified to be specified 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 3: 132/11 kV 7.5 MVA Power Transformer and On load Tap changer Description Minimum Requirements Unit Data Manufacturer kV to be specified 3-phase, oilimmersed, with on-load tap changer outdoor 145 / 36 kV kV 132 33 HV, principal tapping kV HV, extreme plus tapping kV HV, extreme minus tapping kV LV kV to be specified to be specified to be specified to be specified Type Installation Rated maximum voltage (Primary / Secondary) Rated service voltage Primary side (high voltage) Secondary side (low voltage) Data offered by Bidder Rated no-load voltage at rated frequency on: Rated power ONAN [Performance Guarantee] Rated frequency Rated current Primary side (high voltage) Secondary side (low voltage) Vector group Impedance voltage of: ONAN centre tap MVA 7.5 Hz 50 A A to be specified to be specified Dyn1 % 9.8 Insulation Type of cooling Tapping range No-load losses at rated frequency and 100% voltage - maximum value [Performance Guarantee] Load losses at rated frequency and 100% voltage (75°C) - maximum value: [Performance Guarantee] ONAN ONAF The Kenya Electricity Transmission Company Limited kW kW kW uniform ONAN ± 1.67% in ± 8 steps to be specified to be specified to be 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data specified copper Material of winding Temperature rise at rated power over 40°C maximum ambient [Performance Guarantee] oil (upper level) winding Rated power frequency withstand voltage HV/LV Rated lightning impulse withstand voltage: HV windings LV windings °C °C kV 55 60 275/70 kV peak kV peak 650 170 Short circuit impedance referred to the first winding in the following pairs: [Performance Guarantee] At principal tap: high voltage - low voltage / phase to be specified to be specified to be specified 70 At extreme plus tap: high voltage - low voltage / phase At extreme minus tap: high voltage - low voltage / phase Maximum noise level (Lp) [Performance Guarantee] Maximum no-load current Painting Data offered by Bidder dB (A) % In 0.2 Admiralty Grey shade No. 632 as per BS 381C Dimensions length mm width mm height mm distance between wheels' centres mm to be specified to be specified to be specified to be specified to be specified to be specified IEC 60076 IEC 60354 Total weight kg Oil weight kg Applicable standard(s) Transformer Bushings Maximum current carrying capacity of bushings: HV LV The Kenya Electricity Transmission Company Limited A A 120% of IN 120% of IN 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Rated service voltage of bushings: HV LV HV, neutral LV, neutral 1 minute, 50 Hz dry withstand voltage: HV bushing Unit Data kV kV kV 132 33 kV kV LV bushing kV TV bushing kV HV, LV neutral bushings kV 1 minute, 50 Hz wet withstand voltage: HV bushing kV LV bushing kV TV bushing kV HV, LV neutral bushings kV Impulse withstand voltage: HV bushing LV bushing kV kV Data offered by Bidder to be specified to be specified to specified to specified to specified to specified be to specified to specified to specified to specified be be be be be be be to be specified to be specified On-Load Tap Changer Manufacturer Type Rated current Rated short-time current 1 second (maximum) 3 seconds kA kA Step voltage V The Kenya Electricity Transmission Company Limited A to be specified to be specified 33 31.5 to be specified to be 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Number of steps On-load tap changer Minimum number of operations Motor drive Type Supply voltage Insulation level voltage to earth Insulation level Voltage to earth Impulse test voltage One-minute power frequency test voltage (50 Hz) Internal insulation levels / one-minute power frequency test voltage: between selected and pre-selected tap Unit Data operations specified 17 ±8 x 1.67% 200,000 V kV rms kV rms kV peak kV rms kV peak kV rms across fine tap winding kV peak kV rms between phases of fine tap winding kV peak kV rms The Kenya Electricity Transmission Company Limited Data offered by Bidder to be specified 400/230 to be specified to be specified to be specified to be specified to be specified to be specified to be specified to be specified to be specified to be specified 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 4: 132/11 kV 5 MVA Power Transformer – On load Tap changer Description Minimum Requirements Unit Data Manufacturer kV to be specified 3-phase, oilimmersed, with on-load tap changer outdoor 145 / 36 kV kV 132 33 HV, principal tapping kV HV, extreme plus tapping kV HV, extreme minus tapping kV LV kV to be specified to be specified to be specified to be specified Type Installation Rated maximum voltage (Primary / Secondary) Rated service voltage Primary side (high voltage) Secondary side (low voltage) Data offered by Bidder Rated no-load voltage at rated frequency on: Rated power ONAN [Performance Guarantee] Rated frequency Rated current Primary side (high voltage) Secondary side (low voltage) Vector group Impedance voltage of: ONAN centre tap MVA 5 Hz 50 A A to be specified to be specified Dyn1 % 9.8 Insulation Type of cooling Tapping range No-load losses at rated frequency and 100% voltage - maximum value [Performance Guarantee] Load losses at rated frequency and 100% voltage (75°C) - maximum value: [Performance Guarantee] ONAN Material of winding The Kenya Electricity Transmission Company Limited kW kW uniform ONAN ± 1.67% in ± 8 steps to be specified to be specified copper 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Temperature rise at rated power over 40°C maximum ambient [Performance Guarantee] oil (upper level) winding Rated power frequency withstand voltage HV/LV Rated lightning impulse withstand voltage: HV windings LV windings Short circuit impedance referred to the first winding in the following pairs: [Performance Guarantee] At principal tap: high voltage - low voltage Unit Data °C °C kV 55 60 275/70 kV peak kV peak 650 170 / phase to be specified to be specified to be specified 70 At extreme plus tap: high voltage - low voltage / phase At extreme minus tap: high voltage - low voltage / phase Maximum noise level (Lp) [Performance Guarantee] Maximum no-load current Painting dB (A) % In 0.2 Admiralty Grey shade No. 632 as per BS 381C Dimensions length mm width mm height mm distance between wheels' centres mm to be specified to be specified to be specified to be specified to be specified to be specified IEC 60076 IEC 60354 Total weight kg Oil weight kg Applicable standard(s) Data offered by Bidder Transformer Bushings Maximum current carrying capacity of bushings: HV The Kenya Electricity Transmission Company Limited A 120% of IN 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description LV Rated service voltage of bushings: HV LV HV, neutral LV, neutral 1 minute, 50 Hz dry withstand voltage: HV bushing Unit A kV kV kV kV kV LV bushing kV TV bushing kV HV, LV neutral bushings kV 1 minute, 50 Hz wet withstand voltage: HV bushing kV LV bushing kV TV bushing kV HV, LV neutral bushings kV Impulse withstand voltage: HV bushing LV bushing kV kV On-Load Tap Changer Manufacturer Type Rated current Rated short-time current 1 second (maximum) 3 seconds The Kenya Electricity Transmission Company Limited A kA kA Data 120% of IN Data offered by Bidder 132 33 to be specified to be specified to specified to specified to specified to specified be to specified to specified to specified to specified be be be be be be be to be specified to be specified to be specified to be specified 21 31.5 to be specified 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data Step voltage V to be specified 17 ±8 x 1.67% 200,000 Number of steps On-load tap changer Minimum number of operations Motor drive Type Supply voltage Insulation level voltage to earth Insulation level Voltage to earth Impulse test voltage One-minute power frequency test voltage (50 Hz) Internal insulation levels / one-minute power frequency test voltage: between selected and pre-selected tap operations V kV rms kV rms kV peak kV rms kV peak kV rms across fine tap winding kV peak kV rms between phases of fine tap winding kV peak kV rms The Kenya Electricity Transmission Company Limited Data offered by Bidder to be specified 400/230 to be specified to be specified to be specified to be specified to be specified to be specified to be specified to be specified to be specified to be specified 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 5: 132 kV Circuit Breaker Minimum Requirements Description Unit Data Manufacturer to be specified Type of circuit breaker outdoor type Type of arc quenching medium SF6 Model to be specified Rated maximum voltage kV 145 Rated service voltage kV 132 kV peak 650 kV rms 275 Hz 50 Rated lightning impulse (BIL) Data offered by Bidder (at altitude less than 1000 M) Power frequency withstand voltage (at altitude less than 1000 M) Rated frequency Number of phases 3 Rated current A 1600 Short circuit breaking current kA 31.5 Short time withstand sec. 1 DC component time constant ms 45 Maximum breaking time ms 50 Maximum closing time ms 100 kA peak 100 Related short circuit making current Number of tripping coils 2 Number of closing coils 1 Rated power of trip coils w Rated power of closing coil w Operating sequence - The Kenya Electricity Transmission Company Limited O – 0.3 s – CO – 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data offered by Bidder Data 3 min – CO Annual rate of gas leakage at normal pressure Minimum creepage distance % ≤ 1% mm/kV 31 Rated TRV for faults at terminals TRV crest value TRV rate of rise Initial TRV Time to crest of initial TRV to be specified kV 218 kV/s 2 kV 1.4 micro s 0.4 First pole to clear factor 1.5 Maximum over voltage factors for any switching duty P.U 2.3 Maximum over voltage factors when interrupting rated line/cable/capacitor banks charging currents P.U 2.3 Maximum over voltage factors when switching small inductive and reactive current P.U 2.3 Maximum time interval between closure of first and last phase of three phase circuit breaker ms 3 Minimum time from extinction of main arc to contact make during autoreclsoe time Operating mechanism Type Motor voltage Rated power of motor to be specified V DC 110 W Type of device (Motor charged) Spring or hydraulic -For closing For opening Closing and opening coil voltage The Kenya Electricity Transmission Company Limited V DC 110 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Number of closing coils Spring charging time Data offered by Bidder Data 1 s to be specified Manual spring release yes Hand operating facilty yes Mechanical Interlocking facility with isolators yes Emergency trip facility yes Mechanical On and OFF indicators yes Number of opening coils 2 Number of auxiliary contacts available 5 No., 5 NC Main dimensions: Depth mm to be specified Height mm to be specified kg to be specified Weight Accessories in the motor mech. enclosure Operation counter yes Local manual control yes Test switches (dc) yes Heater yes Weatherproof, corrosion resistance enclosure IP65 Accessories in the central control panel Anti-pumping relay yes Local/distance command selector switch yes Local operation push buttons yes Minimum pressure lock-out and alarm relay yes Lighting, heating and service plug yes The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data Terminal blocks yes Test switches (DC) yes Phase discrepancy timer relay yes Mounting brackets and hardware yes With all necessary accessories for installation to be specified Applicable standard(s) IEC 62271-100 The Kenya Electricity Transmission Company Limited Data offered by Bidder 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 6: 132 kV Isolators with Earthing Switches Description Manufacturer Type Installation Rated maximum voltage Rated service voltage Rated lightning impulse (BIL)(at altitude less than 1000 M) Power frequency withstand voltage (at altitude less than 1000 M) Rated short-time current Rated frequency Number of poles Rated current Minimum creepage distance Operation Opening time Closing time Rated peak withstand current Minimum clearance in air: Between poles To earth For isolating distance Type of operating mechanism: For disconnector For earthing switch Rated supply voltage for operating mechanism Current required at rated supply voltage to operate isolator: Hand operating facility Locking arrangement in Off and On Automatice isolation of control supplies when lock off Rated power of operating coil Rated Motor power Facing of terminals and contacts Shape of terminals of the main circuit Number and type of auxiliary switches: Tin plated for Isolator For the disconnector For the earth switch Auxiliary contact rating Wind load Mechanical terminals load: Straight load Cross load Weight of complete disconnector: The Kenya Electricity Transmission Company Limited Minimum Requirements Unit Data sec. sec. kA to be specified to be specified outdoor 145 132 650 275 31.5 50 3 1600 31 motorized ≤ 30 ≤ 30 100 mm mm mm 1600 1300 to be specified kV kV kV peak kV rms kA Hz A mm/kV Data offered by Bidder motor manual V DC A 110 to be specified yes yes yes W W to be specified to be specified Yes 5 NO , 5 NC to be specified A Pa (N/mm²) > 10 to be specified N N 500 170 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description With earthing switch Without earthing switch Approximate dimensions in open position Approximate dimensions in close position With all accessories for installation Applicable Standard(s) The Kenya Electricity Transmission Company Limited Unit kg kg Data to be specified to be specified mm mm to be specified to be specified to be specified IEC 62271-102 Data offered by Bidder 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 7: 132 kV XLPE Cable Minimum Requirements Description Unit Data Manufacturer to be specified Location of manufacturing site to be specified Manufacture quality certification Circuit rating required Data offered by Bidder ISO 9001 MVA 90 1.0 General description of cable Number of cores System voltage 1 kV 132 mm2 1000 Conductor material Conductor size Insulation type XLPE Metal sheath type Lead Oversheath type HDPE 2.0 Insulation Cordination Highest system Voltage (Um) (Insulation class) kV 145 Nominal Voltage between conductors kV 132 Hz 50 Nominal Voltage between conductor and sheath (Uo) kV 76.2 Rated Withstand impulse Voltage( altitude < 1000 M) kV 650 Rated short duration power frequency withstand voltage kV 275 Rated frequency (altitude < 1000 M) 3.0 Rating 1 maximum continuous direct- buried current rating assuming Ground temperature of 30o C, Max. Soil Thermal resistivity of 2.7Km/W, Flat formation configuration and special bonding of metal sheath The Kenya Electricity Transmission Company Limited To be specified 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data offered by Bidder Data Guaranteed current rating Single Trench Calculation Method A IEC 60840 Maximum continuos in air current , assuming A To be specified Air Temperature (in shade) of 40oC, Flat formation configuration spacing of 250mm, Thermally independent of other circuits and special bonding of metal sheath Calculation Method IEC 60840 Maximum permissible core temperature for continuos operation oC 90 Sort circuit capacity for 1 sec kA To be specified Permissible Max. sheath Temperature oC Permissible Max. Conductor Temperature oC Permissible emergency Overload Applied on 100% continuous load Emergency current rating Max. Emergency temperature Allowable duration/ operation Allowable total duration/ operation Max. average duration/average on total life of cable to be specified A oC Hours Hours Hours Applied on 50% continuous load Emergency current rating Max. Emergency temperature Allowable duration/ operation Allowable total duration/ operation Max. average duration/average on total life of cable The Kenya Electricity Transmission Company Limited to be specified A oC 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data offered by Bidder Data Hours Hours Hours Applied on 100% continuous load Emergency current rating Max. Emergency temperature Allowable duration/ operation Allowable total duration/ operation Max. average duration/average on total life of cable to be specified A oC Hours Hours Hours 4.0 Construction features Conductor Material Nominal cross section Shape and type of conductor Overall diameter Water blocking method Semi conductor blinder tape mm2 mm tape/yarn yes Conductor Screen Material Nominal Thickness Minimum Thickness Nominal overall diameter Compound identification reference Fully bonded Semicon. XLPE mm mm mm yes Insulation The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Material Nominal Thickness Minimum Thickness Nominal overall diameter Max. Continuos operating temperature Compound identification reference Maximum stress at nominal voltage Unit mm mm mm oC At conductor screen At insulator screen Data XLPE At conductor screen At insulator screen Maximum stress at impulse voltage Data offered by Bidder 90 yes kV/mm kV/mm kV/mm kV/mm Insulation screen Material Nominal Thickness Nominal overall diameter Compound identification reference Indelible ink marking on screen Fully bonded Semicon. XLPE mm mm Yes Yes XLPE manufacturing methods Extrusion line type e,g CCv,MDCV,VCV Single pass/triple exclusion Curing method Cooling method Degassing period VCV yes dry dry The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data offered by Bidder Data days Bedding for moisture absorption Type of Material Nominal Thickness Mimimum thickness Nominal overall diameter mm mm mm Metallic screen Type and Material Nominal Thickness Mimimum thickness Nominal diameter over screen Cross sectional area of he screen Short time current density(1sec) Copper wire mm mm mm mm2 kA/mm2 Bedding/Binder tape Type and Material Nominal Thickness Mimimum thickness Nominal overall diameter over bedding mm mm mm Metallic screen Type and Material Nominal Thickness Mimimum thickness Nominal diameter over screen Cross sectional area of he screen Short time current density(1sec) The Kenya Electricity Transmission Company Limited lead-alloy ½ C mm mm 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data offered by Bidder Data mm mm2 kA/mm2 Protective anti corrosion external sheath covering Bitumen undercoat Type and material Colour Nominal thickness Minimum thickness Termite resistant Type of anti termite protection Thermal resistivity Type of fire protection for closing section HDPE Black mm mm Yes Specify max. 6.0 Km/w Type of conductive outer layer Graphite/or semicon. polymer Weight of completed cable Copper Insulation Lead alloy Gross weight to be specified Kg/m Kg/m Kg/m Kg/m 5.0 losses Maximum dielectric loss per meter/ phase when operating at nominal voltage frequency and at maximum conductor temperature Maximum sheath loss per meter/ phase when operating at nominal voltage frequency and at current stipulated in item 3 with sheath bonded and earthed as recommended (sectionalising Cross bonding) Maximum conductor loss per meter/ phase when operating at nominal voltage frequency and at current stipulated in item 3 The Kenya Electricity Transmission Company Limited W/m to be specified W/m to be specified W/m to be specified 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data Total loss of cable per metre/ phase of three phase circuit W/m to be specified µΩ/m to be specified Maximum ac resistance of conductor at operating temperature C Equivalent reactance of three phase circuit µΩ/m to be specified µΩ/m to be specified Electrostatic capacitance per conductor of cable at nominal voltage and operating temperature Max. charging current per conductor at nominal voltage pF/m to be specified mA/m to be specified Charging capacity of three phase system (at Uo) Var/m to be specified 6.0 Data offered by Bidder Electrical values Maximum dc resistance of conductor at 20o C Max. dielectric loss factor of cable at nominal voltage and frequency at a conductor temperature of; 20 oC 90 oC Positive and negative impedance to be specified Ω/m Zero sequence impedance (as installed conditions) Resistance Reactance Capacitance to be specified to be specified Ω/m Ω/m pF/m Surge impedance 7.0 Ω/m to be specified V/m to be specified V/m to be specified Bonding and earthing Type of special bonding Max. sheath potential of completed cable with conductor at max. earth fault current of 31.5 kA with sheath bonded and earthed as recommended Max. sheath potential of completed cable with conductor at rated current with sheath bonded and earthed as recommended 8.0 Testing Routine tests As per IEC 60840 Additional tests specified in Ketraco spec. yes The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit yes 1.7Uo for 1 hour Partial discharge monitoring Oversheath DC voltage test < 10pC kV The Kenya Electricity Transmission Company Limited Data IEC 60840 Sample tests 5Uo for 1 hr ( as per Ketraco spec) Type tests Test regime Location of test date of test Commissioning tests AC voltage withstand Data offered by Bidder 12kV for 15 minutes 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 8: 33kV Outdoor Circuit Breaker Minimum Requirements Description Unit Data Manufacturer to be specified Type of circuit breaker outdoor type Type of arc quenching medium Vacuum Model to be specified Rated maximum voltage kV 36 Rated service voltage kV 33 kV peak 170 kV rms 70 Hz 50 Rated lightning impulse (BIL) Data offered by Bidder (at altitude less than 1000 M) Power frequency withstand voltage (at altitude less than 1000 M) Rated frequency Number of phases Rated current 3 A Incomers and feeders 800 Bus coupler Short circuit breaking current 1200 kA 25 8.0 Short time withstand sec. 1 9.0 DC component time constant ms 45 Maximum breaking time ms 50 Maximum closing time ms 120 kA peak 62.5 Related short circuit making current Number of tripping coils 2 Number of closing coils 1 Operating sequence The Kenya Electricity Transmission Company Limited - O - 0.3 s - CO - 3 min - CO 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Annual rate of gas leakage at normal pressure Minimum creepage distance Unit Data % ≤ 1% mm/kV 25 Data offered by Bidder Operating mechanism to be specified 10.0 Type 11.0 Motor voltage V DC 110 12.0 Motor power rating KW to be specified 13.0 Closing and opening coil voltage V DC 110 14.0 Number of closing coils 1 15.0 Number of opening coils 2 16.0 Spring charge time s to be specified 17.0 Manual release spring yes 18.0 Hand operating facility yes 19.0 Emergency trip facility yes 20.0 Mechanical Off and On indicators yes 5 No., 5 NC 21.0 Number of auxiliary contacts available Main dimensions: 22.0 Depth mm to be specified 23.0 Height mm to be specified kg to be specified Weight Accessories in the motor mech. enclosure 24.0 Operation counter yes 25.0 Local manual control yes 26.0 Test switches (dc) yes 27.0 Heater yes Weatherproof, corrosion resistance enclosure The Kenya Electricity Transmission Company Limited IP65 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data offered by Bidder Data Accessories in the central control panel 28.0 Anti-pumping relay yes 29.0 Local/distance command selector switch yes 30.0 Local operation push buttons yes 31.0 Minimum pressure lock-out and alarm relay 32.0 Lighting, heating and service plug yes 33.0 Terminal blocks yes 34.0 Test switches (DC) yes 35.0 Phase discrepancy timer relay yes 36.0 Mounting brackets and hardware yes yes With all necessary accessories for installation to be specified Applicable standard(s) IEC 62271-100 The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 9: 33 kV Isolators with Earthing Switches Minimum Requirements Description Unit Data Manufacturer to be specified Type to be specified Installation outdoor Rated maximum voltage kV 36 Rated service voltage kV 33 Rated lightning impulse (BIL)(at altitude less than 1000 M) kV peak 170 Power frequency withstand voltage (at altitude less than 1000 M) kV rms 70 Rated short-time current kA 25 Rated frequency Hz 50 Number of poles Rated current 3 A Hand operating facility 800 yes Locking arrangement in Off and On yesyes Automatic isolation of control supplies when lock off yesyes Rated power of operating coil W Rated Motor power W Minimum creepage distance Data offered by Bidder mm/kV Operation 31 motorized Opening time sec. ≤ 30 Closing time sec. ≤ 30 Rated peak withstand current kA 100 Minimum clearance in air: The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data 6.0 Between poles mm 500 7.0 To earth mm 435 8.0 For isolating distance mm to be specified Data offered by Bidder Type of operating mechanism: Motorised 9.0 For disconnector manual 10.0 For earthing switch Rated supply voltage for operating mechanism Current required at rated supply voltage to operate isolator: V DC 110 A to be specified Facing of terminals and contacts to be specified Shape of terminals of the main circuit to be specified Number and type of auxiliary switches: 11.0 For the disconnector 5 NO , 5 NC 12.0 For the earth switch to be specified Auxiliary contact rating A > 10 Pa (N/mm²) to be specified 13.0 Straight load N 500 14.0 Cross load N 170 15.0 With earthing switch kg to be specified 16.0 Without earthing switch kg to be specified Approximate dimensions in open position mm to be specified Approximate dimensions in close position mm to be specified Wind load Mechanical terminals load: Weight of complete disconnector: With all accessories for installation to be specified Applicable Standard(s) IEC 62271-102 The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 10: 132 kV Voltage Transformer Description Manufacturer's name Type Model Installation Execution Rated maximum voltage Rated primary voltage Rated secondary voltage (second winding) Rated secondary voltage (third winding) Rated frequency Impulse withstand voltage 1.2/50 micro s wave Minimum Requirements Unit Data Data offered by Bidder to be indicated to be specified to be specified outdoor kV kV kV kV Hz kV peak 145 132/√3 0.1/√3 0.1/√3 50 650 kV rms 275 kV rms 2 VA 100/100 (at altitude less than 1000 M) Power frequency withstand voltage (at altitude less than 1000 M) Power frequency withstand voltage secondary winding Rated output (second winding/ third winding): Accuracy class 6.0 For metering 7.0 For measuring 8.0 For protection Voltage factor at rated voltage: 9.0 Continuous 10.0 30 second Thermal limit burden Normal temperature rise: 11.0 Winding 12.0 Oil Maximum temperature rise under short circuit conditions: 13.0 Winding 14.0 Oil Total height Minimum creepage distance: Size and section of terminals bolts Weight of oil per pole Weight total per pole Type of oil and reference specification Permissible secondary short circuit current Applicable standard(s) The Kenya Electricity Transmission Company Limited 0.2 0.5 3P VA °C °C °C °C mm mm/kv mm kg kg A 1.2 1.5 to be specified 28 50 45 to be specified to be specified to be specified 31 to be specified to be specified to be specified to be specified to be specified IEC 60044-2 60044-5 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 11: 132kV Current Transformer Minimum Requirements Description Unit Data Manufacturer's name to be indicated Type to be specified Model to be specified Installation Data offered by Bidder outdoor Rated maximum voltage kV 145 Rated service voltage kV 132 Rated lightning impulse (BIL) (at altitude less than 1000 M) kV 650 Power frequency withstand voltage (at altitude less than 1000 M) kV 275 Rated frequency Hz 50 A 800 - 400 - 200 A 800 - 400 - 200 A 1-1-1 Rated primary current 6.0 for line feeder 7.0 for transformer feeder Rated secondary currents Number of cores: 8.0 for measuring purposes 1 9.0 for metering purposes 1 10.0 for protection purposes 2 11.0 for busbar purposes 1 Rated burden for measuring core VA Accuracy class Rated burden for metering core 0.5 M 5 VA Accuracy class Rated burden for protection cores The Kenya Electricity Transmission Company Limited 30 0.2 VA Accuracy class Rating for Diferential, Busbar andd Restricted earth fault cores 15 30 5 P 20 VA 30 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Accuracy Unit Data i) Class ii)Vk to be specified Data offered by Bidder iii)Im at Vk Short-time current ratings: 12.0 Thermal (Ith) kA 31.5 13.0 Dynamic (Idyn) kA 80 The minimum guaranteed instrument security factor, for metering current transformer to be specified Impulse wave to be specified Mechanical load of primary terminal: 14.0 Dynamic load N to be specified 15.0 Static load N to be specified mm to be specified mm/kV 31 Minimum clearance Minimum creepage distance Size and section of terminal bolts to be specified Weight per pole kg to be specified Weight of oil per pole kg to be specified Type of oil and reference specification Dimensions With all accessories for installation to be specified mm to be specified to be specified Applicable standard(s) IEC 60044-1 The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 12: 132kV Surge Arresters Minimum Requirements Description Unit Data Manufacturer's name to be indicated Type to be specified Installation Data offered by Bidder outdoor Nominal system voltage kV 132 Rated operating voltage (Ur) kV 108 Rated continuous operating voltage (Uc) kV 84 Rated frequency Hz 50 Nominal discharge current kA 10 Lightning current 8/20 impulse kV to be specified 7.0 Step current 1/20 impulse of 10 kA kV to be specified Switching current 30/60 impulse of 500 A/1000 A kV to be specified High current 4/10 impulse withstand value kA 100 Low current, long duration current impulse withstand (upper value) A 1000 Residual voltage for: 6.0 Line discharge class 3 Absorption capability in kJ/kV of arrester rating at thermal stability kJ/kV 8 Pressure relief class class A Suitability for fault current kA 40 Power frequency 1 min. withstand voltage, wet (at kV 275 Maximum RIV at 1000 kHz measured at 1.05 time the system highest voltage micro V 500 Impulse withstand voltage of arrester insulation external assembly (at altitude less than 1000 M) kV crest 650 kA 31.5 altitude less than 1000 M) Maximum short circuit rating The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data Overall height of arrester mm to be specified Creepage distance mm/kV 31 Weight of arrester kg to be specified Arrester classification Data offered by Bidder heavy duty, stationtype gapless metal oxide or equivalent Accessories: 132 kV surge arrester discharge counter 8.0 Type outdoor 9.0 Counter indication digital 10.0 Protection class IP 54 11.0 Number per 3 arresters Applicable Standard(s) The Kenya Electricity Transmission Company Limited 1 IEC 60099-1, 1A, 2, 4 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 13: 33kV Voltage Transformer Description Manufacturer's name Type Model Installation Execution Rated maximum voltage Rated primary voltage Rated secondary voltage (second winding) Rated secondary voltage (third winding) Rated frequency Impulse withstand voltage 1.2/50 micro s wave Minimum Requirements Unit Data Data offered by Bidder to be indicated to be specified to be specified outdoor kV kV kV kV Hz kV peak 36 33/√3 0.1/√3 0.1/√3 50 170 kV rms 70 kV rms 2 VA 100/100 (at altitude less than 1000 M) Power frequency withstand voltage (at altitude less than 1000 M) Power frequency withstand voltage secondary winding Rated output (second winding/ third winding): Accuracy class 6.0 For metering 7.0 For measuring 8.0 For protection Voltage factor at rated voltage: 9.0 Continuous 10.0 30 second Thermal limit burden Normal temperature rise: 11.0 Winding 12.0 Oil Maximum temperature rise under short circuit conditions: 13.0 Winding 14.0 Oil Total height Minimum creepage distance: Size and section of terminals bolts Weight of oil per pole Weight total per pole Type of oil and reference specification Permissible secondary short circuit current Applicable standard(s) The Kenya Electricity Transmission Company Limited 0.2 0.5 3P VA °C °C °C °C mm mm/kv mm kg kg A 1.2 1.5 to be specified 28 50 45 to be specified to be specified to be specified 31 to be specified to be specified to be specified to be specified to be specified IEC 60044-2, 60044-5 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 14:33kV Surge Arresters Minimum Requirements Description Unit Data Manufacturer's name to be indicated Type to be specified Installation Data offered by Bidder outdoor Nominal system voltage kV 33 Rated operating voltage (Ur) kV 30 Rated continuous operating voltage (Uc) kV 21 Rated frequency Hz 50 Nominal discharge current kA 10 Lightning current 8/20 impulse kV to be specified 7.0 Step current 1/20 impulse of 10 kA kV to be specified Switching current 30/60 impulse of 500 A/1000 A kV to be specified High current 4/10 impulse withstand value kA 100 Low current, long duration current impulse withstand (upper value) A 1000 Residual voltage for: 6.0 Line discharge class 3 Absorption capability in kJ/kV of arrester rating at thermal stability kJ/kV 8 Pressure relief class class A Suitability for fault current kA 40 Power frequency 1 min. withstand voltage, wet kV 70 Maximum RIV at 1000 kHz measured at 1.05 time the system highest voltage micro V 500 Impulse withstand voltage of arrester insulation external assembly kV crest 170 kA 25 Maximum short circuit rating The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data Overall height of arrester mm to be specified Creepage distance mm/kV 31 Weight of arrester kg to be specified Arrester classification Data offered by Bidder heavy duty, stationtype gapless metal oxide or equivalent Accessories: 132 kV surge arrester discharge counter 8.0 Type outdoor 9.0 Counter indication digital 10.0 Protection class IP 54 11.0 Number per 3 arresters Applicable Standard(s) The Kenya Electricity Transmission Company Limited 1 IEC 60099-1, 1A, 2, 4 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 15: Busbar Conductor ACSR 435/55 mm² Minimum Requirements Description Unit Data Manufacturer's name to be indicated Type Aluminium conductor steelreinforced (ACSR) Nominal cross-section mm² Cross-section ratio Al/St approx. Data offered by Bidder 435/55 7.7 Steel Construction mm 7 x 32 Diameter mm 9.6 Cross-section mm² 56.3 Construction mm 54.32 Cross-section mm² 434.3 Total cross-section mm² 490.6 Conductor diameter approx. mm 28.8 Steel kg/km 44.1 Aluminium kg/km 1.199 Without grease total approx. kg/km 1.640 With grease total approx. kg/km 1.646 N 136.450 ohm/km 0.067 m to be specified Aluminium Conductor weight Calculated conductor breaking load Calculated conductor resistance at 20 °C Standard length per reel approx. The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data Dispatch reel nominal size m to be specified Current carrying capacity A 2000 Applicable Standard(s) Data offered by Bidder IEC 60209 DIN 48 204 The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 16: Busbar Shield Wire Minimum Requirements Description Unit Data offered by Bidder Data Manufacturer's name to be indicated Material steel galvanized Cross-section Nominal cross section mm² 50 Actual cross section mm² 49.48 number 7 Wire diameter mm 3.00 Conductor diameter mm 9 kg/km 391 kN 61.58 (St III) g/mm² 5.188 Number of wires Weight: Calculated conductor braking load Weight of zinc coating Applicable Standard(s) IEC 60076 IEC 60289 The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 17: 33kV Current Transformer Minimum Requirements Description Unit Data Manufacturer's name to be indicated Type to be specified Model to be specified Installation Data offered by Bidder outdoor Rated maximum voltage kV 36 Rated service voltage kV 33 Rated lightning impulse (BIL) (at altitude less than 1000 M) kV 170 Power frequency withstand voltage (at altitude less than kV 70 Hz 50 A 400 - 200 - 100 A 800 - 400 - 200 A 1-1-1 1000 M) Rated frequency Rated primary current 6.0 for line feeder 7.0 for transformer feeder Rated secondary currents Number of cones: 8.0 for measuring purposes 1 9.0 for metering purposes 1 10.0 for protection purposes 2 Rated burden for measuring core VA Accuracy class Rated burden for metering core 0.5 M 5 VA Accuracy class Rated burden for protection cores Accuracy class 30 30 0.2 VA 30 5 P 20 Short-time current ratings: The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data 11.0 Thermal (Ith) kA 25 12.0 Dynamic (Idyn) kA 60 The minimum guaranteed instrument security factor, for metering current transformer to be specified Impulse wave to be specified Data offered by Bidder Mechanical load of primary terminal: 13.0 Dynamic load N to be specified 14.0 Static load N to be specified mm/kV 31 Minimum creepage distance Size and section of terminal bolts to be specified Weight per pole kg to be specified Weight of oil per pole kg to be specified Type of oil and reference specification Dimensions With all accessories for installation Applicable standard(s) The Kenya Electricity Transmission Company Limited to be specified mm to be specified to be specified IEC 60044-1 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 18: 33kV Surge Arresters Description Manufacturer's name Type Installation Nominal system voltage Rated operating voltage (Ur) Rated continuous operating voltage (Uc) Rated frequency Nominal discharge current Residual voltage for: 6.0 Lightning current 8/20 impulse 7.0 Step current 1/20 impulse of 10 kA Switching current 30/60 impulse of 500 A/1000 A High current 4/10 impulse withstand value Low current, long duration current impulse withstand (upper value) Line discharge class Absorption capability in kJ/kV of arrester rating at thermal stability Pressure relief class Suitability for fault current Power frequency 1 min. withstand voltage, wet Maximum RIV at 1000 kHz measured at 1.05 time the system highest voltage Impulse withstand voltage of arrester insulation external assembly Maximum short circuit rating Overall height of arrester Creepage distance Weight of arrester Arrester classification Accessories: 132 kV surge arrester discharge counter 8.0 Type 9.0 Counter indication 10.0 Protection class 11.0 Number per 3 arresters Applicable Standard(s) The Kenya Electricity Transmission Company Limited Minimum Requirements Unit Data kV kV kV Hz kA to be indicated to be specified outdoor 33 30 21 50 10 kV kV kV kA A to be specified to be specified to be specified 100 1000 kJ/kV 3 8 class kA kV micro V A 40 70 500 kV crest 170 kA mm mm/kV kg 25 to be specified 31 to be specified heavy duty, station-type gapless metal oxide or equivalent Data offered by Bidder outdoor digital IP 54 1 IEC 60099-1, 1A, 2, 4 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 19: 132kV Dead-End and Suspension Insulators - Discs Description Minimum Requirements Unit Data Manufacturer's name Material Rated maximum voltage (String) Service voltage (String) Individual Disc Data kV kV to be indicated porcelain, glass disc, composite polymer 145 132 Disc diameter (minimum) Spacing Flashover values: Power frequency voltage Power frequency 6.0 Dry 7.0 Wet Lightning impulse: 8.0 Positive 9.0 Negative Radio interference voltage (RIV): 10.0 Test voltage to ground 11.0 Max. RIV at 1000 kHz Nominal creepage distance Dry arcing distance Weight: Accessories: 12.0 Clevis 13.0 Tongue fittings ANSI class Applicable Standard(s) mm mm 254 146 kV rms 132 kV kV 95 55 kV kV 125 130 kV micro V mm mm kg 10 50 432 203.2 to be indicated to be indicated The Kenya Electricity Transmission Company Limited Data offered by Bidder 52.6 IEC 60016, IEC 60305, IEC 60433, IEC 60076, IEC 60289 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 20: 132kV Post-Type Insulators Minimum Requirements Description Unit Data kV kV kV peak to be indicated porcelain or polymer , composite polymer outdoor 145 132 650 kV 275 micro V mm/kV 500 31 kg kgm kg 800 400 to be specified to be specified Manufacturer's name Material Installation Rated maximum voltage Rated service voltage Lightning impulse withstand voltage (at altitude less Data offered by Bidder than 1000 M) Power frequency 1 min. withstand voltage (at altitude less than 1000 M) Maximum RIV at 1000 kHz Nominal creepage distance Mechanical values: 6.0 Cantilever 7.0 Tensional strength Weight: Accessories: 8.0 Connectors 9.0 Joints 10.0 Clamps Applicable Standard(s) The Kenya Electricity Transmission Company Limited IEC 60016, IEC 60168, IEC 60865, IEC 60273 DIN 48 013 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 21: 33/0.4kV Auxiliary Transformer Minimum Requirements Description Unit Manufacturer Data to be specified Type 3-phase, oilimmersed Installation Maximum Opering Voltage Data offered by Bidder indoor kV 36 / 0.430 kV 33 kV 0.4 Rated power kVA 100 Rated frequency Hz 50 8.0 Primary side (high voltage) A 2 9.0 Secondary side (low voltage) A 5 Rated service voltage: 6.0 Primary side (high voltage) 7.0 Secondary side (low voltage) Rated current: Vector group Impedance voltage Dyn11 % Type of cooling 4 ONAN Off-load tap changer regulation ± 2 x 2.5% Losses: 10.0 No-load losses W to be specified 11.0 Load losses W to be specified Rated power frequency withstand voltage kV 70 Rated lightning impulse withstand voltage kV peak 170 dB (A) 68 Sound power level Painting Admiralty Grey shade No. 632 as per BS 381C Dimensions: The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data 12.0 Length mm to be specified 13.0 Width mm to be specified 14.0 Height mm to be specified 15.0 Distance between the wheel's centres mm to be specified Total weight kg to be specified Oil weight kg to be specified Applicable standard(s) The Kenya Electricity Transmission Company Limited Data offered by Bidder IEC 60076 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 22: Low Voltage AC Distribution Panel for Auxiliary Services Minimum Requirements Description Unit Data offered by Bidder Data General Manufacturer's name to be specified Type metal clad, indoor, air insulated Installation indoor Rated Voltage V 400/230 Rated frequency Hz 50 A to be specified Busbar Rated currents Material Short-circuit current (1 s.) copper kA 10 Number of 3-phase outgoings to be specified Number of 1-phase outgoings to be specified Protection IP 4X Equipment 16.0 Main 3-phase 4-poles moulded case circuit breaker for incoming feeder 17.0 3 current transformer to be specified 18.0 3-phase active energy meter to be specified 19.0 1 AC current meter to be specified 20.0 1 current switch, 3 positions to be specified 21.0 1 AC volt meter to be specified 22.0 1 rotary voltage switch, 7 positions to be specified 23.0 3-phase 4-pole moulded case circuit breaker for outgoing feeders 24.0 1-phase 2-pole moulded case circuit breaker for outgoing feeders 25.0 1 outlet socket 220 V, 50 Hz, 10 A to be specified The Kenya Electricity Transmission Company Limited to be specified to be specified to be specified 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data 26.0 length mm to be specified 27.0 height mm to be specified 28.0 depth mm to be specified kg to be specified Data offered by Bidder Dimensions Weight Applicable standard(s) IEC 60364 IEC 60439 VDE 0100 The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 23: Battery Bank 110 V DC, 300 Ah Description Minimum Requirements Unit Data Manufacturer Type Model Installation Electrolyte Container lid Positive electrodes Connector technique Number of cells Nominal voltage Nominal capacity at 10 hour discharge rate Float voltage per cell Float charging current Boost charging voltage per cell Boost charging current Battery voltage at end of duty cycle Short circuit current Internal resistance Life expectancy Cycling capacity Weights and dimensions: 6.0 total weight of battery (incl. electrolyte) 7.0 weight per cell (incl. electrolyte) 8.0 width x depth x height per cell Applicable standard(s) The Kenya Electricity Transmission Company Limited V DC Ah V A V A V A years cycles kg kg mm Data offered by Bidder to be specified sealed OPzV, leadacid, tubular plate, electrolyte in gel form to be specified indoor, vertically on racks sulphuric acid, fixed as gel styrene acrylonitrile (SAN) plastic tubular plate, lead calcium alloy bolted connectors, completely insulated to be specified 110 300 to be specified to be specified to be specified to be specified to be specified to be specified to be specified ≥ 20 > 1,200 to be specified to be specified to be specified IEC 60896 IEC 61056 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 24: Battery Charger Description Manufacturer Type Minimum Requirements Unit Data 2 Model Design Characteristics Circuit configuration Installation Protection class AC supply: 29.0 Rated service voltage 30.0 Frequency 31.0 Rated current DC output: 32.0 Rated service voltage 33.0 Voltage setting range 34.0 Float charging voltage 35.0 Boost charging voltage 36.0 Regulation error of output voltage: - at load variation 0-100% - at frequency variations 50 Hz - at input voltage variation 37.0 Output voltage regulation with current limiting range 38.0 Regulation characteristic 39.0 Ripple content 40.0 Permissible humidity 41.0 Radio interference 42.0 Derating factor (thyristors) 43.0 Cooling 44.0 Fuse switch disconnector (charger output) 45.0 Control unit with integrated mains filter, The Kenya Electricity Transmission Company Limited to be specified full capacity redundant to be specified fully electronic standard design I/U characteristic with high temperature stability 3-phase full wave bridge circuit indoor, in metal-clad cubicles with front door; all equipment accessible from the front side IP41 V Hz A 400/230 50 to be specified V % V V 110 ±5 125 (at 2.23 V/cell) 2.4 per cell % % % ±1 ±5 ± 10 ±2% within voltage range of 80-100% I/U as per DIN 41773 or equivalent < 10 (pp) without battery acc. to IEC "A" according to EN 55011 2.3 as per VDE 0160 natural circulation to be specified to be specified % Data offered by Bidder 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Description phase failure supervision, soft start facility, pulse blocking, cut-in delay Monitoring devices: 46.0 Detailed fault alarm including collective fault alarm and additional visual signalling at front door 47.0 Three-phase overvoltage and undervoltage supervision 48.0 Current-controlled DC undervoltage supervision 49.0 DC overvoltage supervision with delayed/undelayed cut-off 50.0 Integrated supervision of thyristor fuses 51.0 Fuse supervision of auxiliary and control circuits 52.0 Ripple monitoring 53.0 Time to recharge battery to 80% capacity from fully discharged state Measuring: 54.0 Volt meter and ammeter (charger output) 55.0 Battery tension, consumer tension 56.0 Charger current, consumer current Disturbance reports: 57.0 Main failure, rectifier tensions too low 58.0 Battery circle too low, rectifier tension too high, battery deeply unloaded 59.0 Battery circle disturbed, ground fault plus/minus 60.0 Capacity test negative, short circuit Efficiency Weight Width x depth x height Applicable standard(s) The Kenya Electricity Transmission Company Limited Minimum Requirements Unit Data Data offered by Bidder to be specified to be specified to be specified to be specified to be specified to be specified hour to be specified 10 to be specified to be specified to be specified to be specified to be specified to be specified % kg mm to be specified 80 to be specified to be specified IEC 60146 IEC 60364 IEC 60439 IEC 60947 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 25: Protection Relays Minimum Requirements Description- Protection and indication system LINE DIFFERENTIAL PROTECTION AND BACK UP DISTANCE (87l/21) Manufacturer Type reference Relay design (microprocessor based, numerical) Auxialliary Voltage range (Vn= 110 V dc Input frequency range (50Hz Nominal) Differential protection requirements Phase segregated protection Ratio and Vector correction for CTs Adjustable biased differential characteristics Sensitivity - Unit Data Data offered by Bidder to be specified Vdc Hz Numerical 77-150 47.5-52.5 Yes Yes yes protection ms <30 For phase faults For earth faults Operating time Distance protection requirements 3 zone ph-ph & ph-E Phase fault & Earth fault characteristic shapes (Mho, Quad) Operating time SOTF Power swing Blocking ( depending on relaying point in the power system Voltage transformer supervison time delay for all zones Zone enable/disable for all zones Other requirements Thermal overload, 49 Circuit breaker failure 50BF (dependent on application) Event recording function Disturbance recording function Fault locator function Intergral operator interface for local interrogation Programmable scheme logic User friendly HMI, Window based software for relay setting, relay configuration and event, disturbance and fault record management . carry continuous current 1A Make 6A max. for 0.2s Break dc 50W resistive 25W inductive (L/R 40ms) The Kenya Electricity Transmission Company Limited yes yes ms <30 Yes yes yes yes yes no yes yes yes yes yes yes yes yes yes yes 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Self checking facility Intergral intertrip send and receive, with external input interface Communications Protection Direct optical fibre 1300nm single mode Control Communication ports ( Front/rear etc) Unit Data yes yes Data offered by Bidder yes yes (Note: Two Rear ports for NCC and RCC) Physsical links (R485/Fibre optic) Protocol supported - IEC 60870-5-101 IEC 61850 Type tests yes Atmospheric Operation -25C and 55C for 96hrs, IEC 60068-2-1 Transport/storage – 25 and 70C for 96 hrs, IEC 60068-2yes Relative Humidity Operation at 93% Tested to IEC 60068-2-3 with severity class 56 days yes Enclosure IEC 60529 IP50 Mechanical Environment Vibration Shock and bump Seismic IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 Yes Yes yes Insulation Rated Insulation 1000V high impedance protection CT inputs 250V for other circuits 1000V open contact withstand Dielectric tests IEC 60255-5-Series C of table 1 Impulse voltage IEC 60255-5 test voltage 5kv Yes Yes yes Electromagnetic compatibility 1Mhz Burst disturbance test, IEC 60255-22-1 severity class II Electrostatic discharge IEC 60255-22-2 severity class III Radiated Electromagnetic field Disturbance IEC 60255-22-3 severity class III Test method A, 27Mhz through 500Mhz Electromagnetic Emissions IEC 60255-25 Fast transient disturbance The Kenya Electricity Transmission Company Limited Yes Yes Yes Yes Yes 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Unit Data Data offered by Bidder IEC 60255-22-4 severity level Iv Type test certificates to be provided Minimum Requirements Description- Protection and indication system DISTANCE PROTECTION (21) Manufacturer Type reference Relay design (microprocessor based, numerical) Auxialliary Voltage range (Vn= 110 V dc Input frequency range (50Hz Nominal) Distance protection requirements 3 zone ph-ph & ph-E Phase fault & Earth fault characteristic shapes (Mho, Quad) Operating time SOTF Power swing Blocking ( depending on relaying point in the power system Voltage transformer supervison Time delay for all zones Teleprotection modes PUR/POR/Block DEF plain and Blocking modes Z1 min and max operating time (mid Zone) Zone enable/disable for all zones Other requirements Thermal overload, 49 Circuit breaker failure 50BF- (dependent on application) Event recording function Disturbance recording function Fault locator function Intergral operator interface for local interrogation Programmable scheme logic User friendly HMI, Window based software for relay setting, relay configuration and event, disturbance and fault record management . carry continuous current 1A Make 6A max. for 0.2s Break dc 50W resistive 25W inductive (L/R 40ms) Self checking facility Intergral intertrip send and receive, with external input interface Communications Protection Direct optical fibre 1300nm single mode The Kenya Electricity Transmission Company Limited Unit Data Data offered by Bidder to be specified Vdc Hz Numerical 77-150 47.5-52.5 yes yes ms <30 Yes yes yes yes yes yes yes no yes yes yes yes yes yes yes yes yes yes yes yes yes 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Unit Control Communication ports ( Front/rear etc) Data Data offered by Bidder yes (Note: Two Rear ports for NCC and RCC) Physsical links (R485/Fibre optic) Protocol supported - IEC 60870-5-101 IEC 61850 Type tests yes Atmospheric Operation -25C and 55C for 96hrs, IEC 60068-2-1 Transport/storage – 25 and 70C for 96 hrs, IEC 60068-2yes Relative Humidity Operation at 93% Tested to IEC 60068-2-3 with severity class 56 days yes Enclosure IEC 60529 IP50 Mechanical Environment Vibration Shock and bump Seismic IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 Yes Yes yes Insulation Rated Insulation 1000V high impedance protection CT inputs 250V for other circuits 1000V open contact withstand Dielectric tests IEC 60255-5-Series C of table 1 Impulse voltage IEC 60255-5 test voltage 5kv Yes Yes yes Electromagnetic compatibility 1Mhz Burst disturbance test, IEC 60255-22-1 severity class II Electrostatic discharge IEC 60255-22-2 severity class III Radiated Electromagnetic field Disturbance IEC 60255-22-3 severity class III Test method A, 27Mhz through 500Mhz Electromagnetic Emissions IEC 60255-25 Fast transient disturbance IEC 60255-22-4 severity level Iv Type test certificates to be provided Yes Yes Yes Yes Yes Minimum Requirements Description- Protection and indication system LOW IMPEDANCE BUSBAR PROTECTION INCLUDING BREAK FAILURE PROTECTION The Kenya Electricity Transmission Company Limited Unit Data Data offered by Bidder 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Manufacturer Type reference Relay design (microprocessor based, numerical) Auxialliary Voltage range (Vn= 110 V dc Input frequency range (50Hz Nominal) State principle of operation i.e low impedance Unit to be specified Vdc Hz Integral check zone feature (state principle of operation) Distributed bay modules and central Unit (Y/N) Maximum number of bays - Isolator replica CT saturation detector and stabilisation Integral CT Supervision CT matching Functions Phase segregated protection Two stage breaker failure Phase faults Earth fault Facility to initiate the scheme by auxialiary contacts I,e Bucholz operation 2 out 4 check of current detectors Independently settable delay times for operation with and without current Input trip contact Other requirements User friendly HMI, Window based software for relay setting, relay configuration and event, disturbance and fault record management . carry continuous current 1A Make 6A max. for 0.2s Break dc 50W resistive 25W inductive (L/R 40ms) Self checking facility Intergral intertrip send and receive, with external input interface Communications Protection Direct optical fibre 1300nm single mode Control Communication ports ( Front/rear etc) Data Data offered by Bidder Numerical 77-150 47.5-52.5 Yes ms ms Yes yes <30 yes yes <30 Yes Yes Yes Yes yes yes yes yes yes yes yes yes (Note: Two Rear ports for NCC and RCC) Physsical links (R485/Fibre optic) Protocol supported - IEC 60870-5-101 IEC 61850 Type tests The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Unit Atmospheric Data yes Data offered by Bidder Operation -25C and 55C for 96hrs, IEC 60068-2-1 Transport/storage – 25 and 70C for 96 hrs, IEC 60068-2yes Relative Humidity Operation at 93% Tested to IEC 60068-2-3 with severity class 56 days yes Enclosure IEC 60529 IP50 Mechanical Environment Vibration Shock and bump Seismic IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 Yes Yes yes Insulation Rated Insulation 1000V high impedance protection CT inputs 250V for other circuits 1000V open contact withstand Dielectric tests IEC 60255-5-Series C of table 1 Impulse voltage IEC 60255-5 test voltage 5kv Yes Yes yes Electromagnetic compatibility 1Mhz Burst disturbance test, IEC 60255-22-1 severity class II Electrostatic discharge IEC 60255-22-2 severity class III Radiated Electromagnetic field Disturbance IEC 60255-22-3 severity class III Test method A, 27Mhz through 500Mhz Electromagnetic Emissions IEC 60255-25 Fast transient disturbance IEC 60255-22-4 severity level Iv Type test certificates to be provided Yes Yes Yes Yes Yes Minimum Requirements Description- Protection and indication system Multifunction Overcurrent & Earth fault protection (50/51/50N/51N Manufacturer Type reference Relay design (microprocessor based, numerical) Auxialliary Voltage range (Vn= 110 V dc Input frequency range (50Hz Nominal) Number of phase CT inputs Number of earth fault CT inputs Standard, Very and Extreme inverse and definite The Kenya Electricity Transmission Company Limited Unit Data Data offered by Bidder to be specified Vdc Hz Numerical 77-150 47.5-52.5 Yes 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system time characteristics curves conforming to IEC60255 Number of inverse overcurrent functions per phase Number of high set overcurrent functions per phase Number of low set overcurrent functions per phase Number of inverse earth fault functions Number of high set earth fault functions Number of low set earth fault functions Number of group setting Earth fault element suitable of high impedance REF (with external resistor) operating time at 5X setting when configured for REF Suitable for Blocked overcurrent busbar protection scheme Other requirements Thermal overload, 49 (Y/N) Directional O/C and E/F (Y/N) Number of output relays Rated for tripping Rated for control and alarm Integral metering functions Opto-isolator inputs Event recording function Disturbance recording function Intergral operator interface for local interrogation Programmable scheme logic User friendly HMI, Window based software for relay setting, relay configuration and event, disturbance and fault record management . carry continuous current 1A Make 6A max. for 0.2s Break dc 50W resistive 25W inductive (L/R 40ms) Self checking facility Intergral intertrip send and receive, with external input interface Communications Protection Direct optical fibre 1300nm single mode Control Communication ports ( Front/rear etc) Unit Data Data offered by Bidder Yes ms 30 yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes (Note: Two Rear ports for NCC and RCC) Physsical links (RS485/Fibre optic) Protocol supported - IEC 60870-5-101 IEC 61850 The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Type tests Unit Data Data offered by Bidder yes Atmospheric Operation -25C and 55C for 96hrs, IEC 60068-2-1 Transport/storage – 25 and 70C for 96 hrs, IEC 60068-2yes Relative Humidity Operation at 93% Tested to IEC 60068-2-3 with severity class 56 days yes Enclosure IEC 60529 IP50 Mechanical Environment Vibration Shock and bump Seismic IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 Yes Yes yes Insulation Rated Insulation 1000V high impedance protection CT inputs 250V for other circuits 1000V open contact withstand Dielectric tests IEC 60255-5-Series C of table 1 Impulse voltage IEC 60255-5 test voltage 5kv Yes Yes yes Electromagnetic compatibility 1Mhz Burst disturbance test, IEC 60255-22-1 severity class II Electrostatic discharge IEC 60255-22-2 severity class III Radiated Electromagnetic field Disturbance IEC 60255-22-3 severity class III Test method A, 27Mhz through 500Mhz Electromagnetic Emissions IEC 60255-25 Fast transient disturbance IEC 60255-22-4 severity level Iv Type test certificates to be provided Description- Protection and indication system Yes Yes Yes Yes Yes Minimum Requirements Unit Data Data offered by Bidder Multifunction Directional Overcurrent & Earth fault protection (50/51/50N/51N Manufacturer Type reference Relay design (microprocessor based, numerical) Auxialliary Voltage range (Vn= 110 V dc Input frequency range (50Hz Nominal) Number of phase CT inputs Number of earth fault CT inputs The Kenya Electricity Transmission Company Limited to be specified Vdc Hz Numerical 77-150 47.5-52.5 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Three phase VT input Method of determining zero sequence voltage Broken delta VT input (Y/N) Derived mathematically (Y/N) Standard, Very and Extreme inverse and definite time characteristics curves conforming to IEC60255 Number of inverse DOC functions per phase Number of high set DOC functions per phase Number of low set DOC functions per phase Number of inverse DEF functions Number of high set DEF functions Number of low set DEF functions Number of group setting Other functions provided Non directional O/C 50/51 (Y/N) Non directional E/F 50N/51N (Y/N) Thermal Overload 49 (Y/N) Suitable for Blocked overcurrent busbar protection scheme Earth fault element suitable of high impedance REF (with external resistor) Number of output relays Rated for tripping Rated for control and alarm Other requirements Unit Data Yes Yes Integral metering functions Opto-isolator inputs Event recording function Disturbance recording function Intergral operator interface for local interrogation Programmable scheme logic User friendly HMI, Window based software for relay setting, relay configuration and event, disturbance and fault record management . carry continuous current 1A Make 6A max. for 0.2s Break dc 50W resistive 25W inductive (L/R 40ms) Self checking facility Intergral intertrip send and receive, with external input interface Communications yes yes yes Protection Direct optical fibre 1300nm single mode Control Communication ports ( Front/rear etc) yes The Kenya Electricity Transmission Company Limited Data offered by Bidder yes yes yes yes yes yes yes yes yes yes 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Unit Data Data offered by Bidder (Note: Two Rear ports for NCC and RCC) Physsical links (RS485/Fibre optic) Protocol supported - IEC 60870-5-101 IEC 61850 Type tests yes Atmospheric Operation -25C and 55C for 96hrs, IEC 60068-2-1 Transport/storage – 25 and 70C for 96 hrs, IEC 60068-2yes Relative Humidity Operation at 93% Tested to IEC 60068-2-3 with severity class 56 days yes Enclosure IEC 60529 IP50 Mechanical Environment Vibration Shock and bump Seismic IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 Yes Yes yes Insulation Rated Insulation 1000V high impedance protection CT inputs 250V for other circuits 1000V open contact withstand Dielectric tests IEC 60255-5-Series C of table 1 Impulse voltage IEC 60255-5 test voltage 5kv Yes Yes yes Electromagnetic compatibility 1Mhz Burst disturbance test, IEC 60255-22-1 severity class II Electrostatic discharge IEC 60255-22-2 severity class III Radiated Electromagnetic field Disturbance IEC 60255-22-3 severity class III Test method A, 27Mhz through 500Mhz Electromagnetic Emissions IEC 60255-25 Fast transient disturbance IEC 60255-22-4 severity level Iv Type test certificates to be provided Description- Protection and indication system Yes Yes Yes Yes Yes Minimum Requirements Unit Data Data offered by Bidder TRANSFORMER DIFFERENTIAL PROTECTION Manufacturer Type reference Relay design (microprocessor based, numerical) The Kenya Electricity Transmission Company Limited to be specified Numerical 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Unit Data Auxialliary Voltage range (Vn= 110 V dc Input frequency range (50Hz Nominal) Differential protection requirements Phase segregated protection Vdc Hz 77-150 47.5-52.5 Ratio and Vector correction for CTs Adjustable biased differential characteristics Sensitivity - Data offered by Bidder Yes Yes yes protection ms <30 For phase faults For earth faults Operating time 5th Harmonic restraint Other requirements yes High set element Magnetising current inrush restraint Measurement and indication on MMI of phase HV and LV differential and bias current Separate function that performs overfluxing protection with trip and alarm functions Overcurent and earth fault Event recording function Disturbance recording function Latching output contact Intergral operator interface for local interrogation Programmable scheme logic User friendly HMI, Window based software for relay setting, relay configuration and event, disturbance and fault record management . carry continuous current 1A Make 6A max. for 0.2s Break dc 50W resistive 25W inductive (L/R 40ms) Self checking facility Intergral intertrip send and receive, with external input interface Communications yes yes yes Protection Direct optical fibre 1300nm single mode Control Communication ports ( Front/rear etc) Yes yes yes yes yes yes yes yes yes yes yes yes yes yes yes (Note: Two Rear ports for NCC and RCC) Physsical links (RS485/Fibre optic) Protocol supported - IEC 60870-5-101 IEC 61850 Type tests The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Unit Atmospheric Data yes Data offered by Bidder Operation -25C and 55C for 96hrs, IEC 60068-2-1 Transport/storage – 25 and 70C for 96 hrs, IEC 60068-2yes Relative Humidity Operation at 93% Tested to IEC 60068-2-3 with severity class 56 days yes Enclosure IEC 60529 IP50 Mechanical Environment Vibration Shock and bump Seismic IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 Yes Yes yes Insulation Rated Insulation 1000V high impedance protection CT inputs 250V for other circuits 1000V open contact withstand Dielectric tests IEC 60255-5-Series C of table 1 Impulse voltage IEC 60255-5 test voltage 5kv Yes Yes yes Electromagnetic compatibility 1Mhz Burst disturbance test, IEC 60255-22-1 severity class II Electrostatic discharge IEC 60255-22-2 severity class III Radiated Electromagnetic field Disturbance IEC 60255-22-3 severity class III Test method A, 27Mhz through 500Mhz Electromagnetic Emissions IEC 60255-25 Fast transient disturbance IEC 60255-22-4 severity level Iv Type test certificates to be provided Yes Yes Yes Yes Yes Minimum Requirements Description- Protection and indication system TRANSFORMER RESTRICTED EARTH FAULT PROTECTION Manufacturer Type reference Relay design (microprocessor based, numerical) Auxialliary Voltage range (Vn= 110 V dc Input frequency range (50Hz Nominal) Differential protection requirements Phase segregated protection The Kenya Electricity Transmission Company Limited Unit Data Data offered by Bidder to be specified Vdc Hz Numerical 77-150 47.5-52.5 Yes 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Principal of operation – high impedance Ratio correction for CTs Stabilising resistor and voltage dependent resistor included Sensitivity - Unit Data Data offered by Bidder yes Yes yes ms <25 For earth faults Operating time at 5X reject harmonics produced by CT saturation Other requirements yes Event recording function Disturbance recording function Latching output contact Intergral operator interface for local interrogation Programmable scheme logic User friendly HMI, Window based software for relay setting, relay configuration and event, disturbance and fault record management . carry continuous current 1A Make 6A max. for 0.2s Break dc 50W resistive 25W inductive (L/R 40ms) Self checking facility Intergral intertrip send and receive, with external input interface Communications Protection Direct optical fibre 1300nm single mode Control Communication ports ( Front/rear etc) yes yes yes yes yes yes yes yes yes yes yes yes yes (Note: Two Rear ports for NCC and RCC) Physsical links (RS485/Fibre optic) Protocol supported - IEC 60870-5-101 IEC 61850 Type tests yes Atmospheric Operation -25C and 55C for 96hrs, IEC 60068-2-1 Transport/storage – 25 and 70C for 96 hrs, IEC 60068-2yes Relative Humidity Operation at 93% Tested to IEC 60068-2-3 with severity class 56 days yes Enclosure IEC 60529 IP50 Mechanical Environment Vibration IEC 60255-21-1 The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Shock and bump Seismic Unit IEC 60255-21-2 IEC 60255-21-3 Data Yes Yes yes Data offered by Bidder Insulation Rated Insulation 1000V high impedance protection CT inputs 250V for other circuits 1000V open contact withstand Dielectric tests IEC 60255-5-Series C of table 1 Impulse voltage IEC 60255-5 test voltage 5kv Yes Yes yes Electromagnetic compatibility 1Mhz Burst disturbance test, IEC 60255-22-1 severity class II Electrostatic discharge IEC 60255-22-2 severity class III Radiated Electromagnetic field Disturbance IEC 60255-22-3 severity class III Test method A, 27Mhz through 500Mhz Electromagnetic Emissions IEC 60255-25 Fast transient disturbance IEC 60255-22-4 severity level Iv Type test certificates to be provided Yes Yes Yes Yes Yes Minimum Requirements Description- Protection and indication system TRIP CIRCUIT SUPERVISION Manufacturer Type reference Relay design(Electro-mech, static, numerical) Auxialliary Voltage range (Vn= 110 V dc Operating time Supervision of the whole trip circuit with CB open and closed Relay operated indicator Type tests Atmospheric Unit Data Data offered by Bidder to be specified Vdc ms 77-150 yes Operation -25C and 55C for 96hrs, IEC 60068-2-1 Transport/storage – 25 and 70C for 96 hrs, IEC 60068-2Relative Humidity yes Operation at 93% Tested to IEC 60068-2-3 with severity class 56 days Enclosure yes IEC 60529 IP50 Mechanical Environment The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Vibration Shock and bump Seismic Unit IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 Data Yes Yes yes Data offered by Bidder Insulation Rated Insulation 1000V high impedance protection CT inputs 250V for other circuits 1000V open contact withstand Dielectric tests IEC 60255-5-Series C of table 1 Impulse voltage IEC 60255-5 test voltage 5kv Yes Yes yes Electromagnetic compatibility 1Mhz Burst disturbance test, IEC 60255-22-1 severity class II Electrostatic discharge IEC 60255-22-2 severity class III Radiated Electromagnetic field Disturbance IEC 60255-22-3 severity class III Test method A, 27Mhz through 500Mhz Electromagnetic Emissions IEC 60255-25 Fast transient disturbance IEC 60255-22-4 severity level Iv Type test certificates to be provided Description- Protection and indication system Yes Yes Yes Yes Yes Minimum Requirements Unit Data Data offered by Bidder MULTI CONTACT TRIPPING RELAYS Manufacturer Type reference Auxialliary Voltage range (Vn= 110 V dc Is relay mechanically latched or self resetting Method used to reset latched relay (Hand or electrical0 Minimum voltage at which reliable operation occurs to be specified Vdc 77-150 Yes carry continuous current 5A Make 30A max. for 0.2s Break dc 50W resistive 25W inductive (L/R 40ms) Relay operated indicator type Type tests yes yes yes Atmospheric yes yes Operation -25C and 55C for 96hrs, IEC 60068-2-1 Transport/storage – 25 and 70C for 96 hrs, IEC 60068-2Relative Humidity yes Operation at 93% The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description- Protection and indication system Unit Data Data offered by Bidder Tested to IEC 60068-2-3 with severity class 56 days yes Enclosure IEC 60529 IP50 Mechanical Environment Vibration Shock and bump Seismic IEC 60255-21-1 IEC 60255-21-2 IEC 60255-21-3 Yes Yes yes Insulation Rated Insulation 1000V high impedance protection CT inputs 250V for other circuits 1000V open contact withstand Dielectric tests IEC 60255-5-Series C of table 1 Impulse voltage IEC 60255-5 test voltage 5kv Yes Yes yes Electromagnetic compatibility 1Mhz Burs disturbance test, IEC 60255-22-1 severity class II Electrostatic discharge IEC 60255-22-2 severity class III Radiated Electromagnetic field Disturbance IEC 60255-22-3 severity class III Test method A, 27Mhz through 500Mhz Electromagnetic Emissions IEC 60255-25 Fast transient disturbance IEC 60255-22-4 severity level Iv Type test certificates to be provided The Kenya Electricity Transmission Company Limited Yes Yes Yes Yes Yes 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 26: Telecommunication System Minimum Requirements Description Unit Applicable standards for insulation / EMC / ESD tests: 6.0 Protection IEC 60265-4, 5, -6 (22-1, -2, 3, -4) class III IEC 6081-1, -2, -3, -4 IEC 60834-1 IEC 60255-4, 5, -6, class II/III IEC 60801-1, 2, -3, -4 IEC 60870-1, 2, -3, -4 7.0 Telecontrol OLTE transceiver characteristics: 8.0 Optical wave length 9.0 Optical source 10.0 Optical source life span nm 11.0 Optical fibre type 12.0 Optical connectors 13.0 Jitter performance: 14.0 Power supply 15.0 Capacity Digital multiplexers: 16.0 spare channel capacity after commissioning on each transmission section (both main and backup) Optical fibre salient characteristics: 17.0 Number of fibres 18.0 Core diameter 19.0 Cladding design 20.0 Clad diameter 21.0 Core-clad concentricity 22.0 Coating diameter 23.0 Coating concentricity 24.0 Attenuation: 1310 nm 1550 nm 25.0 Bending attenuation: The Kenya Electricity Transmission Company Limited Data Data offered by Bidder V Mbps 1550 or 1310 laser better than 15 years single mode Type FC-PC ITU-T recommendation G.823 48 V DC 8 ≥ 30% m m m m dB/km dB/km 48 minimum 8.3 or 9 with a ± 3% tolerance either matched or depressed 125.0 ± 2 less than 2% 250 ± 15 ≥ 0.7 ≤ 0.40 ≤ 0.22 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Minimum Requirements Description Unit Data 1310 nm (75 mm) dB 1550 nm (75 mm) dB nm ≤ 0.05 (100 turns) ≤ 0.10 (100 turns) ≤ 0.05 (-20 to +85°C) ≤ = 1250 nm ps/nm²/km nm ps/nm²/km 1310 ± 12 0.092 1550 ± 15 0.085 mm mm g/m² dB/splice dB/connector 9.30 ± 0.50 10.50 ± 1.00 35 x 106 0.02 ≤ 0.5 26.0 Temperature dependence 27.0 Cut-off wave length Chromatic dispersion: 28.0 Zero dispersion at: 29.0 Zero dispersion slope (max.) 30.0 Zero dispersion at 31.0 Zero dispersion slope (max.) 32.0 Mode field diameter: 1300 nm 1550 nm 33.0 IL proof test level 34.0 Splice attenuation 35.0 Connector loss Construction requirements: 36.0 Transmission parameters: Bit error rate (path including terminals at n x 2 Mbit/s Jitter performance n x 2 Mbit/s Teleprotection interface (test voltages according to IEC 60255-4): 37.0 Isolation (0.5 J, 1 min.) 38.0 Pulse 1.2/50 µs Telephone system: 39.0 Number of subscriber lines 40.0 Number of trunk lines 41.0 Equipped spare capacity after commissioning 42.0 Capacity for additional lines The Kenya Electricity Transmission Company Limited dB/km Data offered by Bidder < 1 x 10-10 acc. to G.823 kV/DC kV 2 1 % 1 1 30 % 50 (min.) 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Table 27: Control and Monitoring System Description Panels: 6.0 Pre-wired 7.0 Floor-mounted 8.0 Steel sheet thickness 9.0 Protection class 10.0 Maximum height 11.0 Door material Bay units: 12.0 Spare units for additional bays 13.0 Power supply from station battery Central Processing Units (PCU): 14.0 Microprocessor bus architecture 15.0 Memory for system software 16.0 Application software in battery-buffered RAM or EPROM / Flash-PROM 17.0 Automatic time synchronization at all nodes of the network 18.0 Fault indication LEDs on modules and alarm messages on monitors 19.0 Basic functions: logic, sequence control, data processing, including code conversion, text and alarm signal editing, and function units for binary processes 20.0 Cycle times, selectable (for each control module) 21.0 Programming language: Elements for logic, control loops, arithmetic 22.0 Minimum number of I/0 channels per computer (analogue in / digital in / digital out) 23.0 Spare Video display and control system: 24.0 Power supply from station batteries 25.0 Number of monitors for each control system 26.0 Number of function keyboards: liquid-proof keyboard exchangeable extended keyboard 27.0 Hardcopy printer The Kenya Electricity Transmission Company Limited Minimum Requirements Unit Data mm m Pcs. 1 spare for each type of Bay unit provided V DC bit type Data offered by Bidder yes yes ≥2 IP 52 2.25 glass yes 110 32/64 PROM yes yes yes yes ms 10, 20, 40, 50, 100, 200, 250, 500, 1000, 2000s yes (see rel. chapter) % 25 V DC Pcs. 110 3 Pcs. Pcs. Pcs. 1 1 1 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Description 28.0 Event and record printer 29.0 Bus data channels 30.0 Event list 31.0 Alarm list 32.0 Resolution: within computer between computers 33.0 External alarm outputs 34.0 Diagramme change speed 35.0 Diagramme updating: event-driven cyclic, adjustable 36.0 Transfer of manual command inputs Communication links: 37.0 Data transmission rate 38.0 Data transmission mode as serial bus to IEEE 802.3 and CSMA / CD (Ethernet type) 39.0 Conductor as duplex fibre optic cable 40.0 Data transmission rate 41.0 Number of buses per processing unit 42.0 Nodes per buses 43.0 Transmission range (with fibre optic cable) Programming and services unit (personal computer or programming unit): 44.0 45.0 46.0 47.0 48.0 49.0 Main processor type (or better) Main memory Hard disc Floppy disc drive 3.5" Monitor type Interfaces Minimum Requirements Unit Data Pcs. Pcs. events alarms 2 1 min. 400 min. 100 ms ms Pcs. sec. 1 5 6 5 sec. sec. sec. 1 3 to 10 1 Mbit/sec. 10 yes kg yes 10 2 max. 45 1000 notebook or personal computer Pentium 166xx min. 512 min. 100 1.44 active LCD serial and parallel OS, MS-DOS or UNIX, Windows, latest version < 10 °C °C °C 15 - 50 0 - 60 -30 - +60 kV/Hz kV IEC 60255-5, IEC 60950 2/50 2.85 Mbit/sec. no. Pcs. m Mbyte Gbyte Mbyte 50.0 Operating system 51.0 Weight 52.0 Ambient temperature: Operation Storage Transport Electromagnetic interference tests: 53.0 Insulation test, voltage test, individual test: Applicable standards Test voltage AC or DC (1 minute) The Kenya Electricity Transmission Company Limited Data offered by Bidder 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets Description external circuits against internal circuits external circuits against earth and against earth other internal circuits against earth 54.0 Impulse voltage test, type test: Applicable standards Test level Test voltage External circuits against internal circuits External circuits against earth HF interference test, type test: 55.0 Applicable standard 56.0 Test level 57.0 Test voltage (1 MHz attenuated, repeat rate 400/sec.): Common mode voltage Differential voltage Transient disturbance values / burst, type test 58.0 Applicable standard 59.0 Test voltage 60.0 Burst duration 61.0 Repetition time Electromagnetic fields, type test 62.0 Applicable standards Minimum Requirements Unit Data level kV µs 69.0 70.0 71.0 72.0 73.0 Rated voltage (Un) Rated frequency Accuracy class No creep on voltage variation Starting load max. The Kenya Electricity Transmission Company Limited IEC 60255-5 III 5 pulse: 1.2/50 IEC 60255-22-1 III kV kV 2.5 1.0 kV/ns ms ms IEC 60801-2 4, 5/50 15 300 IEC 60801-3 IEC 60255-22-3 Electromagnetic discharges, type test 63.0 Applicable standard 64.0 Test conditions 65.0 Sharpness 66.0 Test voltage Electric meter 67.0 Basic current lb 68.0 Load capacity in % of lb: Metering Thermal Short circuit Data offered by Bidder kV IEC 60801-2 front door closed, closed panel (covered) 3 8 A 3x5 V Hz V A 400 500 peak value of 50 lmax and >25 lmax during 1 µs 3 x 230 / 400 50 0.2 0.8 ÷ 1.15 Un 0.05% lb 132/33kV Substation Construction BD Lot 3B - Construction of Substations. Technical Data sheets The Kenya Electricity Transmission Company Limited 132/33kV Substation Construction BD