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Transcript
Sepam series 80 specification form Since the Protection and Control unit is installed in the switchgear, it must meet the severest environmental withstand requirements as IEC standards: General considerations 60255-5 impulse withstand: 5 kV 60255-22-1 1Mhz wave: Class III 60255-22-4 fast transients: Class IV 61000-4-3 electromagnetic radiation: Class III 60529 degree of protection: IP 52 on front panel 60255-21-1,2,3 vibration, shocks, earthquakes The Protection and Control Unit shall have UL 508 approval and CE mark The design and manufacturing process shall be ISO 9001 certified. The manufacturing facilities shall comply with ISO14001 The operating temperature shall be between -25°C and + 70° C. The Protection and Control unit range shall be designed to accommodate all types of DC control power supply voltages: 24, 48, 127 & 250 Vdc Product shall comply with IP52 front panel and IP20 in LV compartment Product shall also comply with NEMA Type 12 front panel Operating dependability The Protection and Control unit shall include: an internal function self-monitoring mechanism, which activates one fail-safe watchdog changeover contacts an automatic device for switching to the fail-safe position, disabling output controls when a major internal failure is detected indication of self test status of the device by LED and text. Installation The Protection and Control unit should be compact and easy to install: reduced depth (closed to 210 mm) Optionability and expandability It shall be possible to add further options to the relay Options shall be prewired in an easy to install and configure way The Protection and Control Unit shall contain all the necessary protections for the specific application: Protection functions Sepam series 80 specification form REV D For any applications: 60/60FL CT/VT Supervision 74 Trip circuit supervision 86 Latching / acknowledgement Protection and Control unit Page 1/8 Sepam series 80 specification form Incomer / Feeder protection: 25 Synchro-check 27 Undervoltage (phase-to-phase or phase-to-neutral) 27D Positive sequence undervoltage 27R remanent undervoltage 32P Reverse real power 37P Directional active underpower 46 Unbalance / negative sequence 47 Negative sequence overvoltage 49 RMS thermal overload 50/51 Phase overcurrent 50N/51N Earth fault (or neutral) 50BF Breaker failure 67 Directional overcurrent 67N/67NC Directional earth fault 59 Overvoltage (phase-to-phase or phase-to-neutral) 59N Neutral voltage displacement 81L Underfrequency 81H Overfrequency 81R Rate of change of frequency (ROCOF) 79 Recloser (4 cycles) Transformer protection 24 Volt / Hertz 25 Synchro-check 26/63 Thermostat / Buchholz 27 Undervoltage (phase-to-phase or phase-to-neutral) 27D Positive sequence undervoltage 27R remanent undervoltage 32P Reverse real power 38/49T temp set point 46 Unbalance / negative sequence 47 Negative sequence overvoltage 49 RMS thermal overload 50/51 Phase overcurrent 50N/51N Earth fault (or neutral) 50BF Breaker failure 59 Overvoltage (phase-to-phase or phase-to-neutral) 59N Neutral voltage displacement 64 REF restricted earth fault 67 Directional overcurrent 67N/67NC Directional earth fault 81H Overfrequency 81L Underfrequency 87T 2 windings current differential Motor protection Sepam series 80 specification form REV D 12/14 Over/Under Speed 27 Undervoltage (phase-to-phase or phase-to-neutral) 27D Positive sequence undervoltage 27R remanent undervoltage 32P Reverse real power 32Q reactive overpower 37 Phase undercurrent 40 Field Loss (underimpedance) Protection and Control unit Page 2/8 Sepam series 80 specification form 46 Unbalance / negative sequence 47 Negative sequence overvoltage 38/49T Temperature monitoring 49 RMS Thermal overload 48/51LR Excessive starting time, locked rotor 50/51 Phase overcurrent 50N/51N Earth fault (or neutral) 50BF Breaker failure 59 Overvoltage (phase-to-phase or phase-to-neutral) 59N Neutral voltage displacement 66 Starts per hour 67N/67NC Directional earth fault 78 Pole Slip 81H Overfrequency 81L Underfrequency 87M Current differential 26/63 Thermostat / Buchholz Generator protection 12/ 14 Over/under speed 21B Back underimpedance 24 V/Hz 25 Synchrocheck 27D Positive sequence undervoltage 27R remanent undervoltage 27 Undervoltage (phase-to-phase or phase-to-neutral) 32P Reverse real power 32Q Reactive overpower 37P Directional active underpower 40 Field Loss (underimpedance) 46 Unbalance / negative sequence 47 Negative sequence overvoltage 38/49T Temperature monitoring 49 RMS Thermal overload 50/27 Inadvertent energization 50/51 Phase overcurrent 50V/51V Voltage restrained overcurrent 50N/51N Earth fault (or neutral) 50BF Breaker failure 59 Overvoltage (phase-to-phase or phase-to-neutral) 59N Neutral voltage displacement 64G /27TN 100% stator earth fault 64 REF restricted earth fault 67 Directional overcurrent 67N/67NC Directional earth fault 78 Pole Slip 81H Overfrequency 81L Underfrequency 87M Current differential 26/63 Thermostat / Buchholz Busbar protections: Sepam series 80 specification form REV D 25 Synchro-check 27 Undervoltage (phase-to-phase or phase-to-neutral) Protection and Control unit Page 3/8 Sepam series 80 specification form 27D Positive sequence undervoltage 27R remanent undervoltage 46 Unbalance / negative sequence 47 Negative sequence overvoltage 50/51 Phase overcurrent 50N/51N Earth fault (or neutral) 50BF Breaker failure 59 Overvoltage (phase-to-phase or phase-to-neutral) 59N Neutral voltage displacement 81L Underfrequency 81H Overfrequency Capacitor bank protections: 27 Undervoltage (phase-to-phase or phase-to-neutral) 27D Positive sequence undervoltage 27R remanent undervoltage 38/49T Temperature monitoring 46 Unbalance / negative sequence 47 Negative sequence overvoltage 49 RMS thermal overload for capacitors 50/51 Phase overcurrent 50N/51N Earth fault (or neutral) 50BF Breaker failure 51C Capacitor bank unbalance 59 Overvoltage (phase-to-phase or phase-to-neutral) 59N Neutral voltage displacement 81L Underfrequency 81H Overfrequency Each protection device shall have wide setting ranges, in particular for current protections, providing a choice of curve types between definite time curve (DT), with time delay settings from instantaneous to 300 s, and IDMT curves (SIT, VIT, LTI, EIT, UIT, RI, IEC SIT / A, IEC VIT or LTI / B, IEC EIT / C, IEEE moderately inverse, IEEE very inverse, IEEE extremely inverse, IAC inverse, IAC very inverse, IAC extremely inverse) adjustable either by time delay or TMS factor. Protection device (for phase overcurrent, Earth fault and Directionnal protections) shall give the possibility to create a customized tripping curve Large settings range for protection functions: ANSI 50/51 Is set point ANSI 50N/51N Is0 set point Tripping time delay Timer hold 0,05 to 24 In 0,05 to 2,4 In DT IDMT Inst.: 0,05s to 300s 0,1s to 12,5s at 10 Is 0,01 to 15 In0 (min 0,1 A) 0,01 to 1 In0 (min 0,1 A) DT IDMT Inst.: 0,05s to 300s 0,1s to 12,5s at 10 Is0 The detection of the earth fault current shall be ensured from 0,1A primary current Sepam series 80 specification form REV D Protection and Control unit Page 4/8 Sepam series 80 specification form Phase overcurrent and earth fault protection shall have an adjustable timer hold to allow restriking faults detection and induction disk relay compatibility. Earth fault protection shall integrate a harmonic 2 restraint, which can be inhibited or activated. Alternative overcurrent setting groups will be selectable by logical conditions to adapt fast protection plan change as well as remote setting facilities for thresholds and time delay adjustments. The unit shall allow for the use of upstream and downstream logic discrimination in order to discriminate correctly when used in a cascade scheme or closed loop applications. Overload protection will be based on RMS current value (minimum 13th harmonic) and will take into account the ambient temperature. Alternative overload setting groups will be selectable by logical conditions to adapt operating mode change. Adjustment of the overload tripping curves will be possible to exactly fit the motor characteristics. Setting shall be performed by the direct input of actual current Values. Protection tripping shall be indicated on the front of the device by a LED and text indicating the cause of the fault. The protection and control unit shall include voltage transformer and current transformer circuit supervision (ANSI 74) Each Protection and Control unit shall include the Measurements needed for operation and commissioning, i.e. at least the following: Metering functions RMS 3-phase current measurement residual current measurement phase current demand and maximum demand measurement of fault current broken in each phase Measurement of voltage, frequency, power and energy. For power and energy data, the unit shall measure real and reactive values and takes into consideration the direction energy flow. In addition, the protection and control unit shall include 4 logic inputs allowing energy measurement by means of impulses coming from an external meter. additional measurements such as unbalance ratio, thermal capacity used, ... Sepam series 80 specification form REV D Protection and Control unit Page 5/8 Sepam series 80 specification form Product shall provide a display of the phasor diagram (by software or on the UMI) The unit shall provide one of the measurement on an analog output. The Protection and Control unit shall include a back lit display unit that indicates: measurement values operating messages (choice of language English or local) device maintenance messages Operator Interface (front panel) The display unit shall have as a minimum 3 lines for clear annunciation of alarm conditions. 8 Signals LEDs will be available for alarms and status, including: breaker position (opened/closed), relay self test, phase fault and earth fault alarms. It shall be possible to customize the assignment of the signal LEDs. The display indication shall be in 2 languages Local for operations English for maintenance as a back up of local The Protection and Control unit shall include a keypad to allow to perform the following operations: display of metering and operating data, alarm messages clearing of alarms and resetting, acknowledgement It shall be possible to remote the MMI to allow installation of the Protection and Control unit in a different place than the MMI for the most advantageous location for operation & monitoring. For some applications, the possibility to view devices status on an animated diagram and to control locally the closing and the opening of the devices shall be possible The Protection and Control unit shall include the logic inputs and outputs resources required for control of the breaking devices (circuit-breaker or contactor) and for interfacing with the monitoring or logic process. Control and monitoring The unit shall have at least 5 relay outputs, with extension capacity to a minimum of 42 opto-isolated logic inputs and 23 relay outputs Extension of 3 modules of Inputs/outputs increases the number of logic inputs and outputs, allowing : CB open and close control, whatever the type of shunt trip or undervoltage release coil control ANSI 69 / Inhibit closing Remote tripping Sepam series 80 specification form REV D Protection and Control unit Page 6/8 Sepam series 80 specification form Adaptation of predefined control and monitoring functions, or programming specific control and monitoring functions storage of information (even during control power supply outages). As an option, monitoring of the circuit breaker for maintenance statistics purpose: operating time, charging time, trip circuit supervision (covering power supply, wiring and coil) cumulative total of tripping currents for 5 current ranges, operation counter, pressure (for SF6 circuit breakers) For motors, transformers, and generators, 8 to 16 temperature sensors inputs shall be available Disturbance recording: The relay shall be able to record one set of 500 cycles (at 50 Hz or 60 Hz) at 12 points per cycle. For other arrangements it shall be possible to adjust the followings : Trigger from 0 to 99 cycles before event Sampling rate at 12 or 36 pts per cycle The content of the record will be as a minimum 4 current channels 4 voltage channels The event format shall be COMTRADE 97 logical states recorded Date and time In case of external and/or internal auxiliary supply failure, alarms, event logs and oscillography data shall be recorded and stored (battery, condensator….) The unit shall provide time-tagging of minimum 200 events within an accuracy of 1ms. The Protection and Control unit will be supplied with 2 Communication ports providing RS 485 type, up to 38 400 baud speed, Modbus Protocol. Fiber Optic shall be an option. Relay vendor solutions will allow to connect to ethernet gateway. The response time for a control order will be less than 15 ms. (time from order sent to the unit up to order acknowledgement) Communication The Protection and Control unit will communicate the metering data, enable the remote readings of the protection settings, the remote setting of protection and the transfer of the disturbance recorded data. Sepam series 80 specification form REV D Protection and Control unit Page 7/8 Sepam series 80 specification form Remote control orders shall be carried out in 2 modes : Direct mode "SBO" (select before operate) mode Products shall be synchronized by an external pulse at logic input or via the communication link Appropriate software (using standard Windows NT or XP operating system) will allow to collect: all metering and operating data, alarm messages breaker diagnostics data (cumulative tripping current, operating counter…) protection and parameter settings, logic status of inputs, outputs and signal LEDs. (download to/from the relay). At least 2 level passwords shall protect from nuisance action. Software Disturbance recording: single or multi curve display, 2 pointers for differential measurement, zooming, printing. A RS232 connection port shall be available in the front of the relay, and shall be used for point to point PC based local communication using the appropriate software supplied by the relay vendor Software shall be connected to a set of relays, themselves connected to a communication network via Ethernet connection, RS485 serial connection or telephone-line connection Predefined control and monitoring functions shall be adapted by using a boolean editor including timers, counters Control Logic For some needs (complex applications like specific automatic transfer functions, motor starting sequences….), a ladderlanguage programming software shall be used to program specific control and monitoring functions Upgradability and servicing Sepam series 80 specification form REV D It shall be possible to upgrade internal firmware after delivery from the vendor. It should be possible to withdraw the unit without prior current circuit short-circuiting. In case of product servicing, it will be possible to transfer customer applications and event log on the new product without any additional downloading. Protection and Control unit Page 8/8