Download Generators

‫المواصفات الفنية العائدة للمولد الكهربائي وملحقاته‬
……………… ‫لزوم كلية‬
PART 1 - SUMMARY
Works shall include but not limited to the following:
1.
Supply and install diesel generator with associated auxiliaries, cooling air flow system,
starting equipment, fuel-water separator filter, connection to fuel tank, batteries &
charger, instrumentation, protection and control equipment, sound proof enclosure,
operating and maintenance manual and maintenance schedule for diesel alternator etc...
2.
Supply and install automatic transfer switches (ATS) with electrical and mechanical
interlock, metallic coated panel enclosure and all the required accessories for the good
operation etc...,
3.
Supply and install load management module able to control up to three power sources,
plant cabling and wiring as required for good operation of the Genset systems, all
necessary monitoring, control, protection devices for the perfect operation of the
system.
4.
All cables, ATS, accessories, fuel system, exhaust connections and installation should
be done by the contractor when necessary
01.
All equipment and accessories listed below have to be installed for a perfect operation
Generating set 180KVA + sound proof
02.
Generating set 250KVA + sound proof
03.
Generating set 315KVA + sound proof
5.
and to the satisfaction of the technical staff:
04.
05.
06.
07.
08.
09.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
Generating set 70KVA + sound proof
Generating set 100KVA + sound proof
Generating set 135KVA + sound proof
Generating set 150KVA + sound proof
ATS with 2 power contactors (3x150A) for Generating set 70 KVA
ATS with 2 power contactors (3x200A) for Generating set 100 KVA
ATS with 2 power contactors (3x250A) for Generating set 135 KVA
ATS with 2 power contactors (3x250A) for Generating set 150 KVA
ATS with 2 power contactors (3x300A) for Generating set 180 KVA
ATS with 2 power contactors (3x400A) for Generating set 250 KVA
ATS with 2 power contactors (3x500A) for Generating set 315 KVA
Load management module between two generators and all necessary control cables
power cables for Generating set 100 KVA
power cables for Generating set 135 KVA
power cables for Generating set 150 KVA
power cables for Generating set 180 KVA
power cables for Generating set 250 KVA
power cables for Generating set 315 KVA
Fuel tank 1000 L
Fuel tank 2000 L
Fuel tank 3000 L
Exhaust pipes 4 inches
Exhaust pipes 6 inches
1
PART 2 - GENERAL
2.1
LOCATION
The contractor is committed to site inspection of the generator location.
2.2
STANDARDS
Generator shall comply with the latest edition of IEC, unless otherwise indicated.
2.3
SPARE PARTS
Provide manufacturer’s recommended list spare parts for 1000 hours operation of the generator
(lubricating oil, oil and fuel and air filters, …)
2.4
QUANTITIES
Quantities of Power + control cables and Exhaust pipes are approximate and will be paid
according to the effective executed meters as the required needs (depending on the site
conditions) for the good operation of the system.
2.5
SUBMITTALS
A.
Contractor should submit operations and maintenance manuals in English, after the finishing of
works.
B.
Contractor should submit test form for approval.
C.
Contractor should submit shop drawing for ATS and load management module for approval.
2.6
WARRANTY
Provide one year full warranty or 1000 working hours (which ever occurs first) for replacing
and repairing any equipment or auxiliary specified in this specifications.
PART 3 - PRODUCTS
3.1
MANUFACTURER
A.
Engine and alternator should be made in Europe or USA.
B.
Generator could be locally assembled.
3.2
DESCRIPTION OF GENERATOR SET
A.
DIESEL GENERATOR SET
1.
2.
3.
4.
5.
COMPONENTS: Set is to basically consist of diesel engine, Brushless synchronous
generator with direct flexible coupling to engine and set mounted control panel.
GOVERNING: Shall comply with ISO 3046/1 or BS 5514, using electronic type
governor.
STARTING AND STOPPING: When in the automatic mode the set is to start
automatically by a signal sent through an auxiliary contact. The set is to stop, after an
adjustable cool-down period 20 minutes.
HAND OPERATION: Is to be possible for testing or normal operation through a
selector switch.
DUTY: Generator is to reach full speed within 12 seconds of start impulse. Loads are
then connected and the generator shall accept immediately 65% of net rated output
(load being mixed, steady and inductive, with motor starting). During the process,
transient voltage variation is not to exceed 10% under any step-load application for
which the system is intended.
2
6.
7.
8.
B.
FAILURE TO START: If the engine fails to start following a start impulse, the system
is to come to rest for a few seconds. Two further starting attempts are to be
automatically made with intermediate 20 second maximum periods of rest. If the engine
fails to start after three attempts, an alarm is to sound and a start failure signal
illuminate.
REGULAR EXERCISING: While on “auto”, the set is to start regularly and
automatically every weekly and is to operate for an adjustable time preset 30 minutes
before stopping.
VIBRATION REDUCTION: Is to be achieved by appropriate design and careful
balancing at factory. Generator Set is to have approved anti-vibration isolators of steel
spring or resilient neoprene between rotating equipment and bed-frame, limiting
transmission of vibration to building to a maximum of 0.05 mm amplitude throughout
the operating vibration frequency range.
DIESEL ENGINE AND AUXILIARIES
1.
2.
3.
4.
5.
6.
7.
8.
9.
ENGINE TYPE: Compression-ignition type with direct solid- injection, turbo-charged
after-cooled, in line or V type cylinder arrangement, 1500 rpm, class A diesel oil,
suitable for direct coupling to driven machine. Flywheel is to be suitably sized for type
of service and constraints specified (should be enough for a load pick-up capability of
65% of the generator’s rating), and capable of being rotated at 125% of rated speed
without failure. Torsional vibration dampers are to be provided. Engine to be preheated
in order to reach 65% of the load in 12 seconds and 100% of the load in 3 minutes.
COOLING SYSTEM: Engine is to be water cooled with gear-driven water pumps.
System is to be pressurized, with heavy-duty tropical radiator cooled by reverse flow
fan. Fan coil and hand protection guard are to be fitted. Coolant temperature is to be
controlled by one or more thermostats. Radiator is to be sized for continuous
performance at 110% rated load at worst operating ambient conditions with a 15 deg. C
temperature differential. Radiator is to be non-ferrous metal, incorporating pressure
valve, and radiator cap and drain cock and with integral expansion tank.
COOLING AIRFLOW: Obstructions in path of cooling airflow (openings, louvers,
grilles, mesh, ducts, bends, etc...) are not to reduce airflow below that needed at full
rated output.
FUEL SYSTEM: Is to have injection pump and injectors that are easily removable and
replaceable for servicing. Engine is to have integral, gear type engine driven transfer
pump to lift fuel against a head of 2.5 m and supply it through filters to injection pump
at constant pressure. Fuel filter elements are to be easily replaceable. Fuel /water
separator should be provided. Generator should be connected to the external fuel tank
through steel pipes, valves and all necessary accessories should be dimensioned,
supplied and installed by the contractor in such a way to ensure good function of the
system.
AIR INTAKE SYSTEM: Engine air filter is to be either dry filter with replaceable
paper filter elements or oil-bath filter dipstick and provision for adding oil while engine
is running. Filters are to be capable of removing particles 10 microns and larger.
ELECTRIC STARTING SYSTEM: Engine starting shall be manual by push-button or
automatic through control system at control panel. System shall consist of heavy duty
24 V D.C. starter motor, heavy duty battery and battery charger. Cranking motor and
battery are to be rated for cranking the engine when cold and at lowest temperature
recorded. Starting pinion is to automatically disengage when engine fires.
STORAGE BATTERY: Lead-acid, sealed-in-plastic type completes with battery rack
and inter-cell connectors. Battery is to have sufficient capacity to provide minimum six
(6) cranking periods.
BATTERY CHARGER: To be European, Japanese or American made, 25% over-rated,
solid state, full-wave rectifier type, adequate to fully recharge depleted battery in not
more than 8 hours and to automatically control rate of charge (providing a high-charge
rate to a depleted battery and reducing to a trickle-charge rate when battery is fully
charged). Ammeter is to be provided to indicate charging rate, which is to be adjustable.
ELECTRONIC GOVERNOR: Governor is to have zero percent (isochronous) setting
and adjustable drop from zero percent to 10% drop. System is to include power supply
unit, magnetic speed pick-up, control module and actuator using fast response D.C
motor drive or equally approved alternative. Governor is to be designed for fastresponse and high-precision of speed (frequency) control, and is to include speed
adjustment to +/-5% of normal, while running, and with remote control interface.
3
10.
11.
12.
13.
C.
GENERATOR (ALTERNATOR)
1.
2.
3.
4.
D.
Frequency deviation under 25% sudden load change is not to exceed 1 Hz, recovering
to stable speed condition of +/-0.1 Hz in 1 second.
GOVERNOR OVERSPEED TRIP: Is to automatically close fuel pump racks in event
of engine overspeed. Device is to be separate and independent from governing
mechanism.
EXHAUST SYSTEM: Is to be complete with flanged, bolted, black sheet steel,
Painted with inflammable aluminum coat ,seamless steel pipe sections, long sweep
elbows, flexible expansion sections, clean-outs, residential silencer, wall thimbles and
supporting steelwork, . Exhaust system is to be designed to reduce back pressure to
below maximum specified by the manufacturer. Dimensions of all exhaust systems
should be on the responsibility of contractor (not less than 4 inches diameter).
PROTECTIVE SYSTEM: Is to comprise automatic engine shutdown and generator trip
with visual and audible alarm in event of overspeed, low lubricating oil pressure, high
cooling water temperature and over cranking.
TYPE: Synchronous, low reactance, high efficiency, revolving field type, with
brushless exciter and flexible coupling, sized to pick up effective load without
exceeding transient and steady-state voltage deviation limits specified up to its full
nominal rating.
MAXIMUM VOLTAGE DIFFERENCE: Between the three phases at 100% balanced
load is not to exceed 1%. With unbalanced load up to 30% on one phase at unity power
factor and zero loads on other phases, the line-to neutral voltages are not to differ by
more than 5%.
CHARACTERISTICS:
a.
Number of phase:
3
b.
Rated voltage:
380V
c.
Frequency:
50Hz
d.
Rated power factor:
0.8
e.
Overload:
10% nameplate rating for 1 hour every 12
hours
g.
Rotor:
Salient pole type. Incorporating damping
grid.
h.
Excitation:
Brushless, with rotating Armature
rectifiers and discharge resistors.
j.
Insulation:
class H for stator, class H for Rotor and
exciter.
k.
Enclosure:
drip proof and screen protected (IP 23 to
IEC 529)
l.
Cooling:
built-in centrifugal fans.
VOLTAGE REGULATOR: Solid state, volts/Hz type, utilizing silicon semi-conductor
devices in control and power stages, with built-in electro-magnetic interference
suppression and designed for singles or parallel operation. Optional manual adjustment
to +/-5% of regulated voltage level is to be possible. Voltage regulator is to
automatically reduce voltage if load exceeds capacity of generator and is to sustain a 3phase short-circuit current at the generator terminals for the period for which the shortcircuit protection operates and at least for 3 seconds. The voltage regulator has to
monitor the 3-phases outputs. Voltage regulator power is to be supported by a
permanent magnet to maintain excitation field power (PMG). Overall voltage deviation
within normal speed variations is to be within limits specified from no-load to full-load,
from hot to cold and with load power factor from 0.8 lagging to unity. Regulator is to
automatically reduce voltage if load exceeds capacity of generator. Voltage build-up is
to be positive and rapid even when full load is suddenly applied. Line-to-line voltage
wave-from deviation factor is not to exceed +/-5%. Total harmonic content is not to
exceed 5%.
INSTRUMENTATION, PROTECTION AND CONTROL EQUIPMENT.
1.
GENERATING SET INSTRUMENTS, PROTECTION AND CONTROLS: Control
relays, sensing equipment, switchgear protective relays and devices and start, stop and
4
2.
shutdown controls are to be provided as necessary for operation specified. Generating
set, instruments, protection and controls are to be mounted preferably in one control
cubicle.
PROTECTIVE GEAR: Is to ensure orderly engine stop or shutdown with reset relays,
as required for safety and operational reliability, and is to include the following:
a.
Molded case circuit breaker (MCCB) 3 poles (Schneider, Siemens, ABB,
Moeller or similar ...), compatible with the generator rating and must be
adjustable.
b.
Over-voltage protection with voltage and time lag adjustment.
c.
Loss-of-field protection.
3.
GENERATOR CONTROL PANEL is to include at least the following:
a.
Digital indication (LCD):
1)
Voltage
2)
Current.
3)
Frequency.
4)
System diagnostic.
5)
Oil pressure.
6)
RPM.
7)
Hour meter.
8)
Coolant temperature.
b.
Indicating lights:
1)
Low oil pressure.
2)
High coolant temperature.
3)
Overspeed.
4)
Overcrank.
5)
Fault shutdown.
6)
Charging fault.
7)
3 spare lights.
c.
Controls:
1)
Auto, start/stop.
2)
Emergency stop.
3)
Lamp test.
4)
Cool down timer.
5)
Cycle crank.
6)
Voltage control.
4.
5.
6.
CURRENT TRANSFORMERS: class 1 for measuring and protection.
ENCLOSURE CONSTRUCTION: Is to comply with IEC EN 60439-1.
VOLTAGE TRANSFORMERS: Single phase, dry type, 0.5 accuracy class.
PART 4 - EXECUTION
4.1
SOUND PROOF ENCLOSURE
Sound proof enclosure should be designed for 78dB at 1 meter, made of black steel 2 to 3 mm
(minimum) sand blasted and painted (humal paint) with rockwool insulation 10mm
(minimum), access service lockable doors. It should ensure proper ventilation without using of
a separate independent ventilator. 4 lifting points and support pads should be provided to carry
the whole set. The sound proof ground should be insulated.
4.2
LOAD MANAGEMENT
A.
DESCRIPTION:
1.
The load management module should be able to control up to three power sources:
MAIN and two generators G1 and G2 of different rating. It should be able to measure
the voltage and frequency on all three sources as well as the current on the load side. It
has four operating modes selectable by the user: OFF, AUTO, MAIN, generator G1,
generator G2. The menu gives access to all timers, set points and other parameters
relevant to the control and protection of the installation.
5
2.
3.
B.
FEATURES:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
C.
Measurement and display of the voltages and frequency on the three sources.
Measurement and display of the current on the load side.
All three supplies are monitored for over/under voltage, phase presence and sequence.
All three supplies are monitored for frequency.
Load side is monitored for over current when it is not supplied by the main.
Display switches automatically to show the measurements of the source feeding the
load.
Automatic switching between the two generators based on the load.
Weekly exerciser function.
Ability to control contactor and motorized circuit breakers.
Menu to provide access to all timers, set points and other parameters.
Over/under frequency alarm and shut down.
Over/under voltage alarm and shut down.
Over current alarm and shut down.
OPERATION:
1.
OFF.
2.
AUTO: On receipt of a start signal signaling loss of power (MAIN), the generator G1
shall automatically and independently start then pick up the load, if the load is less than
a preset level (will be determined on site) or G1 fails to start the generator G2 start
automatically and pick up the load instead of G1. When the load become higher than a
preset level, G1 start automatically and pick up the load instead of G2.
3.
MAIN: The module monitors the MAIN supply. The load is fed exclusively from this
supply if it is within the acceptable limits. No generator will be started if the MAIN
fails.
Generator G1: In this mode and regardless of the status of the MAIN supply, the
module starts generator1 and engages the load after warm up delay.
Generator G2: In this mode and regardless of the status of the MAIN supply, the
module starts generator 2 and engages the load after warm up delay.
Final sequence of operation should be coordinated with technical staff.
4.
5.
6.
4.3
Load management system can be installed in ATS-1 in adequate way or in a separate
enclosure.
A manual bypass shall be provided in order to ensure the continuity of electricity
feeding for the building, if the load management system fails to operate the system for
any reason.
AUTOMATIC TRANSFER SWITCH (ATS)
A.
Works shall include Supply and install automatic transfer switches ATS with all associated
auxiliaries, plant cabling and wiring. ATS cabinet shall be made from sheet steel 1.5 mm
minimum with continuous welded seams, hinged key locking front door, IP54. All devices and
cables should be labeled.
B.
ATS-1 shall receive incoming cables from the generator G1 and the generator G2 and outgoing
cables to the ATS-2 and all necessary control cables.
C.
ATS-2 shall receive incoming cables from ATS-1 and the MAIN source (EOL) and outgoing
cables to the main panel board and all necessary control cables.
D.
ATS contains but not limited the following:
1.
Two power contactors (AC3) (Telemecanique, Siemens, ABB, Moeller or similar ...)
2.
The two contactors should be mechanically and electrically interlocked.
3.
All incoming and outgoing cable sections shall be adequate with the power of
generators
4.
All necessary monitoring, control, protection devices for the perfect operation of the
system.
6
4.4
CABLES
A.
Cables glands, cables support, lugs and labels shall be used for all cables.
B.
Cables sizes:
1.
Power cables between generators G1 and G2 , ATS-1, ATS-2 and the MAIN source
shall be adequate with the power of generators
2.
Control cables shall be selected by the contractor for the perfect operation of the
system.
4.5
TESTING
A.
LOAD TESTS: Are to be carried out at low loads to overload conditions, at various power
factors. Measurements are to include voltage and frequency deviations and regulating time
under various step-loading conditions, temperature measurements and pressure measurements
at various locations, and in accordance with an approved plan under conditions equal to worst
site ambient conditions.
B.
TESTS: Are to include at least the following:
1.
2.
3.
4.
Full load test for 8 hours continuous, immediately followed by 10% overload test,
without interruption.
Insulation measurement.
Functional tests for voltage sensing, automatic start and stop etc...
Operation of engine shut- down and alarm a signaling and indication, under simulated
fault conditions.
7
1 ‫جدول الكميات العائد للمجموعة رقم‬
Lot 1- BILL OF QUANTITIES
ITEM
1
2
3
DESCRIPTION
Supply and install of generating set 150 KVA prime and
the necessary sound proof enclosure with all equipment
and devices mentioned in the specifications and all
necessary accessories.
Supply and install of ATS with two power contactors,
electromechanical interlock and all the required
accessories for the good operation as mentioned in the
specifications.
Supply and install of load management system between
generators (software and hardware) as mentioned in the
specifications.
UNIT
QTY.
No.
1
No.
1
No
1
5
Supply and install of cables 3x95+50mm2 including
support, glands, lugs, labels and all necessary accessories.
L.M.
100
6
Supply and install of cables 3x70+35mm2 including
support, glands, lugs, labels and all necessary accessories.
L.M.
10
L.M.
100
No.
1
L.M.
6
7
8
9
10
11
Supply and install of control cable between generators,
ATS, Main EOL for the good operation of the sets
including support, glands, lugs, labels and all necessary
accessories.
Supply and install main fuel tank 2000 liters, thickness 3
mm of black steel with all sanitary and accessories needed
to feed the two generators in case of mains failure
Supply and install of exhaust system 4 inches (one for
each generator set) as mentioned in the specifications.
Rehabilitation of the room located near the old generator
room where it will be installed the new 150KVA generator
and the main fuel tank 2000 liters. Works shall include
supply and install Iron door of 200 cm width and 240 cm
height and two vents with all necessary accessories. The
ceiling height of 280 cm should be made from wavy
galvanized and reinforced steel 1.0 mm minimum.
Labor, tools, transport, unloading, builder's works, testing,
one year guarantee, all overhead expenses and profit for
all the above items.
8
Shall be included in the items
mentioned above.
1 ‫جدول الكميات العائد للمجموعة رقم‬
Lot 1- BILL OF QUANTITIES
ITEM
1
2
3
5
6
7
8
9
10
11
DESCRIPTION
Supply and install of generating set 150 KVA
prime and the necessary sound proof enclosure
with all equipment and devices mentioned in the
specifications and all necessary accessories.
Supply and install of ATS with two power
contactors, electromechanical interlock and all the
required accessories for the good operation as
mentioned in the specifications.
Supply and install of load management system
between generators (software and hardware) as
mentioned in the specifications.
Supply and install of cables 3x95+50mm2
including support, glands, lugs, labels and all
necessary accessories.
Supply and install of cables 3x70+35mm2
including support, glands, lugs, labels and all
necessary accessories.
Supply and install of control cable between
generators, ATS, Main EOL for the good
operation of the sets including support, glands,
lugs, labels and all necessary accessories.
Supply and install main fuel tank 2000 liters,
thickness 3 mm of black steel with all sanitary and
accessories needed to feed the two generators in
case of mains failure
Supply and install of exhaust system (one for
each generator set) as mentioned in the
specifications.
Rehabilitation of the room located near the old
generator room where it will be installed the new
150KVA generator and the main fuel tank 2000
liters. Works shall include supply and install Iron
door of 200 cm width and 240 cm height and two
vents with all necessary accessories. The ceiling
height of 280 cm should be made from wavy
galvanized and reinforced steel 1.0 mm minimum.
Labor, tools, transport, unloading, builder's works,
testing, one year guarantee, all overhead expenses
and profit for all the above items.
UNIT
QTY.
No.
1
No.
1
No.
1
L.M.
100
L.M.
10
L.M.
100
No.
1
L.M.
6
No.
1
Unit price
US$
Shall be included in the items
mentioned above.
Total Price (VAT excluded)
VAT
Total Price (VAT included)
9
Total
price US $
La section des câbles doivent être adéquates avec la puissance de générateurs
The cable sections shall be adequate with the power of generators
5.
Power cables from generators G1 and G2 to ATS-1, between ATS-1 and ATS-2
and between ATS-2 and the MAIN source shall be adequate with the power of
generators
‫ اليجب ان يقل ارتفاع السقف‬.‫تاهيل الغرفة الموجودة قرب غرفة المولد القديم لوضع المولد الجديد وخزان المازوت‬
‫ السقف يجب ان يكون من‬.‫سم‬042 ‫م وارتفاع‬0 ‫ تركيب باب حديد عرض‬.‫ تركيب فتحات للتهوئة‬.‫سم‬082 ‫عن‬
.‫الحديد المزيبق مموج ومدعم‬
‫تركيب فتحات للتهوئة‬
Rehabilitation of room located near the old generator room where it will be
installed the new 150KVA generator and the main fuel tank 2000 liters.
Works shall include supply and install Iron door of 200 cm width and 240
cm height and two vents with all necessary accessories.
The ceiling height of 280 cm should be made from wavy galvanized and
reinforced steel 1.0 mm minimum.
Largeur
10