TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15

TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
Page 1 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
1. General
T
hese specifications cover the technical requirements for Thirty units of Diesel engine drives
electric alternators, 400/230V
, 3phase, 4 wires, 50HZ, 1500 rpm, prime output
rating 15kVA, and 0.8 PF at an altitude of 2200m ASL and 30 , sound and weather proof canopy
outdoor unit.
1.1
Applications
The generators will be used to supply the telecommunication services of Yemen Mobile Company.
All units are expected to supply rectifiers, Three / single phase air conditioners, single phase lights, and
fans etc. In addition, one or two sets of generators shall be installed in each site according to availability
of main electricity.
The tenderer shall provide customer list where similar Gen-sets and their facilities have been
supplied and giving satisfactory services. The list should indicate the places where such equipment is
currently in service.
The most important specifications and main points are summarized in the attached tables to be filled
by the tender just as a secondary part from the whole Gen-set specification and it is significant to be
fulfilled clearly and perfectly based on detailed required specifications. The basic detailed required
specifications are stated as following:
1.2
Sites conditions
The Gen-sets will be working at operation conditions as follows:
a) At 2200m above sea level and 30 .
b) At sea level, 45
and Humidity up to 90%
De-rating tables and curves for electric power generator sets shall be supplied by the tender.
1.3
Documentations supplied with offer:
Proposals for approval shall include with the tenderer offer:
-
Generator set photographs (suitable size) of all sides.
-
Gen-set Technical Data , design and performance, specifications (tabulated data that identifies
make , model and country of origin as attachment) for the following:
1) Engine (Including its relevant components).
2) Alternator (Including its relevant components).
Page 2 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
3) Control panel (Including its relevant components).
4) Auxiliary components:
a) Starter components.
b) Fuel Solenoid.
c) Dynamo charger.
d) Injection pump.
e) Exhaust system.
f) Gen-set circuit breaker etc.
-
Drawings:- General dimensions drawings showing overall generator set measurements, mounting
location, and interconnecting points for load leads, fuel, exhaust, cooling and drain lines.
-
All Wiring and schematic drawing showing detailed circuits.
-
Standards Compliance: Complying with requirements of the international and European Codes
and standards applicable for diesel generator sets.
1.4
-
Warranty Statements
All Gen-sets shall be under two years on-site comprehensive warranty support from the date of
installation and operation at the site or 30 months from date of final acceptance for the tender
equipment as a whole including spare parts which is certainly after the technical test in warehouse
of Yemen Mobile Company. All Gen-sets components shall be covered by the warranty. All
components of the Gen-sets are to be warranted against any damage or malfunctions may occur
during the warranty period. And an approved quality assurance certificate should be provided.
-
Service - Location and description of local spare parts suppliers and services center including
parts inventory and number of qualified generator set service personnel.
-
The manufacturer shall have a local authorized dealer who can provide factory trained
servicemen.
Notes: Any submitted offer without complete technical data for all units and parts will be
ignored and rejected.
Page 3 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
1.5
Training

The supplier shall provide a complete training program in the country of
manufacturing.

Two engineers shall attend the factory test before supplying the required
system.

Training shall be prepared for other three engineers in a period not less than
two weeks of business days.
Page 4 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
2- Diesel Engine Specifications:
S. No
2-1
Component Name
Cooling System
Required Specifications
Water cooled with fan and radiator
The Water cooled system of the engine shall be equipped with built in
expansion tank.
2-2
Water Level
Maintenance
Engine should have high quality and finish to make it a zero leakage
system.
Similarly the water system should have seals to ensure no water
leakage from the water pump.
The radiator shall be Heavy duty with fan and corrosion resistance
2-3
Radiator
(provide technical details).
The engine prime power duty shall be de-rated capable of developing
sufficient output HP not less than required by the alternator (15kVA
2-4
Output
prime power) at the following site conditions:
Altitude: up to 2200 meter Above Sea Level (A.S.L)
Ambient Temperature: 30
The Maximum engine prime power duty rated shall be not more than
2-5
Maximum Output
the power required by the alternator (20 kVA prime power) at sea level
and 45 .
2-6
Speed
1500 RPM
Page 5 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
Mechanical Governor under steady state conditions, whatever the load
might be, the rotational speed shall remain between N and 1.04 N,
where N is the normal speed in the event of a sudden load variation of
0.25L nominal, but with the load remaining between 0.5 L and L
nominal, Where L nominal is the rated load, the instantaneous change
2-7
Governor
in speed should not exceed 4% of N. The rotational speed then should
be returned within offset limits is less than 3 seconds and stabilize in
less than 8 seconds.
The tender shall enclose graphic diagrams showing the de-rating of
his units depending on altitudes, temperature and humidity varying.
S. No
Component Name
Required Specifications
The engine shall be multi cylinder, in line configuration, and four
2-8
No. Of Cylinders
2-9
Flywheel
2-10
Overload
Capacity
2-11
Engine Aspiration
Naturally Aspirated
2-12
Standard That The
Engine Should Meet
The engine shall be complying with an international standard.
strokes.
Of suitable diameter and weight (indicate the diameter and the weight).
The engine should be capable of providing 10% overload for 1 hour
for every 12 hour continuous running at full load
 Residential type with exhaust piping with vibration isolators,
2-13
Silencer & Exhaust
System
thermal insulation for exhaust line with glass wool, aluminum
sheet.
(Provide technical details).

Electromagnetic solenoid switch: it shall supply the required
current to the starter motor and pull in and pull out pinion drive.
2-14
Starting System

Starter motor: 12 VDC, it shall have clutch for normal and
abnormal operation.
 Battery:
 The battery shall be maintenance free, of known
Page 6 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
manufacture, sufficient to supply starting and control circuit.
 The battery shall be adequately charged either from
mains supply and / or from the Gen-set supply through
the unit control panel.
S. No
Component Name
Required Specifications
Fuel injection:
Fuel injection pump with fuel lift hand pump , fuel flow
replaceable filter and separate preliminary fuel filter (water separator)
2-15 Fuel System
and electric fuel solenoid (preferred energized to run type) should be
provided.
The tenderer shall furnish details of fuel injection pump, fuel
consumption at full load and at varying loads.
 Dry type air filter, heavy duty type with replaceable elements
shall be provided.
2-16 Air Filter
 Efficiency of the system at various stages shall be furnished.
 Full pressure lubricating oil system including an oil cooler is to be
fitted.
 Oil pre-heating is required only before starting.
2-17 Lubrication System
 The Oil shall be drained through external hose-pipe – plug type is
preferred.
The tender shall indicate the frequent of changing oil.
A heavy duty flexible block coupling shall be fitted between the
2-18 Flexible Coupling
engine and the alternator to absorb the transmission of shock loads.
Details should be offered by the tender.
Page 7 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
S. No
Component Name
Required Specifications
The engine shall be equipped with protective devices to provide
warning and automatic shut-down under the following conditions:1) Low Lubricating Oil Pressure
2) High Water Temperature
-(W+SD)
3) Low Radiator Water Level
-(W)
4) Fail To Start
2-19
Engine Protective
Devices
-(W+SD)
5) Over Speed/Under Speed
-(W+SD)
-(W+SD)
6) Low and high Battery Voltage
7) Dynamo Charger Fail
-(W)
-(W)
8) The engine shall be equipped with an oil pressure and
temperature detectors.
9) The engine shall be fitted with an oil pressure and Temperature
sensors that shall be extended to the controller.

All fuel-lines before the cut off valve shall be fireproof.

The engine color shall remain the original color as supplied by
the manufacturer.

Rubber hose pipes used on the water, lubricating oil or fuel
systems and rubber belts shall not be painted.
2-20 Accessories

All cables that connect the engine auxiliary components such as
sensors, dynamo charger, starter motor, and fuel solenoid shall be
extended through high quality conduit to be protected from
engine heating.
Page 8 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
3- Alternator Specifications
S. No
Component Name
Required Specifications
General
1) The alternator shall be three phases, 0.8 PF (lagging), four wires,
400/230V
3-1
Alternator
-15% with a frequency of 50 Hz, star
connected.
2) The alternator shall be screen protected, drip-proof, selfregulating, self-exciting, Brushless, and directly coupled to the
engine.
Rating of alternator shall be determined in accordance to the engine
3-2
Rating
output rating at sea level.
1) Design: the alternator shall be design of welded steel
construction.
2) Degree of protection: The alternator shall have an International
Protection Code (IP) not less than “IP 23”.
3-3
Construction
3) Insulation Level: The alternator shall be to class ‘H’ insulation.
4) Bearing: Only single bearing for alternator shall be supplied.
Centrifugal fan
High velocity cooling air circuit shall maintain internal winding and
rotor free of dust particles.
 Permanent magnet (PMG) in exciter field is preferred (for fast
voltage build up both after a short circuit and also after a long time
of inactivity).
 Self-excitation is acceptable, if it gives fast voltage build up both
3-4
Excitation System
after a short circuit and also after a long time of inactivity. The
main exciter shall be protected against surge voltage.
The auxiliary exciter technique shall be described in full details by
the tenderer.
Page 9 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
S. No
Component Name
Required Specifications
1) The alternator shall be AVR controlled.
2) The AVR shall be mounted in the connection box of alternator
and all components must be accessible and replaceable.
3) The automatic voltage regulator (AVR) shall be of three phase
sensing electronic type with accuracy regulation not more than
±1%.
3-5
Automatic Voltage
Regulation (AVR)
4) The voltage shall be maintained within ±5% of nominal range
from no-load to full-load, at unity and 0.8 P.F lag whatever the
alternator temperature is.
5) The AVR shall be protected against failure due to low speed
operation, over excitation, overvoltage and any abnormal
conditions.
The full technical data with schematic diagram for A.V.R shall be
provided.
3-6
Wave Shape
The output waveform should be pure sine. The residual harmonic
percentage between full load and no load should not exceed +5%.
1. The overload characteristic should be able to handle 110% of
rated power continuously for at least one hour every 12 hours.
2. The design of the alternator and regulator system shall be able to
maintain machine excitation for a period of 10 seconds at a rating
of 300% before fault clearing.
3-7
Overload And Short
Circuits
3. Alternator shall be provided with full protection against abnormal
conditions in order to withstand all types of short circuits without
any damage.
4. The alternator and voltage regulator components shall be
protected against voltage transients induced by switching or
lightning surges.
All protections shall be stated in details by the tender.
Page 10 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
S. No
Component Name
Required Specifications
Engine and alternator shall be coupled and mounted on sturdy,
3-8
Frame
fabricated, welded construction base frame.

Sensing electrical conditions which might cause damages to the
generator e.g. high and low output voltages and frequency and
3-9
Sensing Abnormal
Conditions
sudden severe phase unbalance.

In such circumstances and any fault electric problem the control
equipment shall immediately isolate the generator from the load,
stop the diesel engine and raise an alarm.
Page 11 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
4- Generator Control Panel :
S. No
Component Name
Required Specifications
The control panel shall be fitted on the generator set and shall be able
to function as follows:a) Automatically starts up the generator set when receiving the
remote start signal from (A.T.S) and stop after cooling the
generator when removing the signal.
4-1 General
b) Supervise and monitor all Gen-set devices and parameters and
react for any abnormal conditions.
c) All operation modes, monitoring, measurements, and protections
processes should be functioned by using its control and display
unit (electronic card).
The control module shall stand the dip in voltage during starting
processes, and it shall be isolated by external switch.
The control module shall perform the following:
 Operation mode selection :
Control and Display
4-2 Unit
(Electronic card)
The panel shall contain the following operation modes:
1) Auto operation mode
2) Manual operation mode
3) Test operation mode
4) Off Mode
All the above modes shall be selected via soft pressing keys.
Page 12 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
S. No
Component Name
Required Specifications
 Digital Instruments (Measuring, Monitoring and Display):
1) AC (line – line / line – neutral) Voltage values.
2) AC Current per phase values.
3) kVA, kVAR, kW/phase and total, kWh and Power factor.
4) Frequency and speed values.
5) Running hours for the generator set.
6) Battery DC voltage.
7) Battery charging DC ampere.
8) Oil pressure value (bar, Pascal).
9) Engine Temp value ( ).
 Indictors , Alarms Lights and Protection for :
1) Fail to Start
(LED)
2) Gen-set normal running (LED)
Control And Display
4-3 Unit
(Electronic Card)
3) High engine temp.
(W +SD)
4) Low oil pressure.
(W +SD)
5) Battery charger fail.
(W)
6) Over/Under speed.
(W +SD)
7) Over/Under Frequency (W +SD)
8) Low water level.
(W)
9) Over/Under voltage.
(W +SD)
10) Over load and S.C.
(Trip + SD)
11) Dynamo charge fail
(W)
12) Emergency Stop
(SD)
13) Phase sequence and missing protections.
Any alarms (warning and shutdown) occur shall be interpreted as
an alphabetic comprehensive text massage in display.
 Alarm Retransmission
- Gen-set running (shall be free contact)
-
Gen-set failure (shall be free contact)
Page 13 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
S. No
Component Name
Required Specifications
1) Gen-set output circuit breaker 4 poles (MCCB), level protection
at least IP 22, breaking capacity current at least 16kA.
2) Rated of MCCB shall be suitable of Gen-set working at sea level.
4-4
Protections Devices
3) 4-pole Gen-set output surge protection device (SPD) level-1 or
level-2.
4) Suitable MCBs protection for all input and output (AC /DC)
circuits.
1) Power terminal contacts 4 terminals for output, each terminal
shall suit a cross section area 16mm2.
2) Control and alarm terminals cross section area 4mm2, blade
screwdriver.
4-5
Terminals
3) Suitable terminals for Gen-set’s battery (Positive / Negative) and
an automatic battery charger (L-N) so that the Gen-set’s battery
can be easily connected to the automatic battery charger installed
in the ATS.
Page 14 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
5- Base Requirement
S.
No
Component Name
Required Specifications
Guards
a) All moving and rotating parts such as belts, couplings and fans
shall be protected by suitable guards to prevent accidental
injury to personnel.
b) Guards shall be fitted to all engines with side-mounted exhaust
5-1
Set Requirements
manifolds.
Noise and vibration
a) The engine / alternator combination shall be arranged to
run free from excessive vibration and noise under all
conditions of load and speed.
Engine Control wiring shall be multi-strand annealed copper
conductor encased by cross-linked Polyethylene insulation
resistant to heat, abrasion, oil, water, antifreeze, and diesel fuel.
5-2
Wiring And Conduits Wiring shall be suitable for continuous use at 120
with insulation not brittle at -50
(250 )
(-60 ). Cables shall be
enclosed in nylon flexible conduit which is slotted to allow easy
access and moisture to escape.
5-3
Labeling And
Fixtures:

Each part shall be labeled similar to the drawings.

All wires and terminals shall be labeled according to the
drawings.

All wire terminals and lugs should be tightly fixed.

The labels shall include all information required by IEC
standards.
(a) The engine color shall remain the original color as supplied by the
5-4
Finish
manufacturer.
(b) Rubber material, which is not fire or fuel proof, is not acceptable.
Page 15 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
6- Canopy And Sound Proof Specifications:
S.
No
Component Name
Required Specifications
Canopy Requirements :
a) The enclosure shall allow easy access to the engine, alternator,
radiator filler cap and control cubicle for easy maintenance
purposes.
b) The starter battery in sound-proof canopy sets shall be housed in an
insulated compartment with forced air flow when the engine is
running. It should be provided with easy access for maintenance
and removal of the battery.
6-1
Acoustic
Enclosure
c) The enclosure shall be designed to be Water and weather-proof.
d) The noise level generated by the set at full load should be less than
70 dB (A) at 1 meter.
e) The enclosure base frame should be designed with supports for
easy transferred using forklift.
f) Two doors for enclosure canopy are preferred.
g) Canopy shall be capable of anti-corrosion to withstand high
humidity.
Page 16 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
7- Documents And Drawings :
S. No
Component Name
Documents Required
The contractor shall supply the following manual and drawings:
1) Original test factory certificate
7-1
Engine And
Alternator
2) Service and Maintenance Manuals
3) Workshop Manual.
4) Spare Parts Manual
5) Spare part list - indicating make, model, and rating etc.
1) Description (operating) manual.
2) Control module manual.
3) Fault-finding manual.
4) Component lists – indicating country of origin, make, etc.
7-2
Control Panel
5) One original Software program for control panel and three soft
copies.
6) Software cable link (three).
7) Spare part list - indicating make, model, and rating etc.
1) Wiring and schematic drawing showing detailed circuits.
2) Each wire, component, terminal, etc. shall be clearly annotated
on the drawing for identification and maintenance purposes.
7-3
Gen-set
3) Hardcopy of every handbook, manual and every drawing per
unit (for each).
4) In case of handbooks, manual and drawings are not available
at the time of final inspection the bidder will not be acceptable.
Page 17 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
Page 18 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
1-General


 These specifications cover the technical requirements for Fifteen General ATS Panels.
 This ATS Panel Should be General design for used it with any two Gensets (15KVA) or
one Genset(15KVA) with mains .
This ATS panel should be transmit and received signal from any Genset control card (differential
models) to start and shutdown Genset or connect loads.
The ATS Specifications in PART- B should be suitable with Generator Control Panel
Specifications in PART-A .
-
-
1-1 Documentations Supplies with offer:
for approval shall include with the tender offer:
ATS Technical data , design , Specifications (tabulated data that identifies make ,
model and country of origins) for all components:
a) panel
a) PLC card
b) Contactors
c) Load circuit breaker
d) Relays.
e) Circuit breaker control.
f) Electrical charger (220VAC-12Vdc).
Drawings: panel dimensions.
All wiring and schematic drawing showing detailed circuits.
Standard complains: complying with requirements of the International and European
codes.
1-2 Warranty Statements
All ATS Panels shall be under 5 months on site comprehensive warranty support from the date
installation and operation or one year from date of final acceptance for the tender.
1-3 Training
 The supplier shall provide a complete training program in the country of
manufacturing.
 Training shall be prepared for two engineers in a period not less than one weeks of
business days.
Notes: Any submitted offer without complete technical data for all units and parts will be ignored and
rejected.
Page 19 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
2- Automatic Transfer Switch [ATS] Specifications:
S.
No
Component Name
Required Specifications
The ATS unit shall be separated; floor mounted, supported by a
stand and can be fixed to the wall if needed. ATS shall be supplied
to contain all equipment as a one set from the manufacturer.
ATS panel shall control the operation and the protection for two
sources and the load, and it should be equipped to handle 15
KVA Genset capacity . The type of the sources can be whether two
generators or mains and one generator. This type of ATS shall be
equipped with :

One-High efficiency 12-Volt DC electronic programmable
logic controller (PLC) with display to control the two
sources
working
in
two
main
operation
modes
(Auto/Manual).

2-1
The PLC timer should be protected from reverse polarity of
its supply.
General

The PLC timer shall stand the dip in voltage during starting
processes in order to not be affected during the cranking
period of a Gen-set, especially one source only is Gen-set
and the other is mains. And it shall be isolated by external
switch

The PLC shall have interface port suitable for inserting
external back -up Memory and/or connecting PC interface
Cable.
Also, the PLC device shall be functioned to be
programmed or modified without connecting to PC.

Each PLC shall be equipped with, programming-supervision
software and connecting cable.

A battery shall be provided of 12 Volt and not less than 7AmpHours.
S.
No
Component Name
Required Specifications
Page 20 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
Also, the ATS unit shall be provided with and able to function as
follows:Enclosures:
 General purpose type, suitable for relevant ambient
conditions, flush or surface mounted as shown on the
comprising of box, trim and door to approved manufacturer’s
standards and sizes.
 Box, trim and doors should be electro-galvanized steel sheet
more than 1.5mm thickness according to the standards.
 Inner and outer surfaces of cabinet/boxes, trims, doors etc,
should be cleaned, phosphatized, chrome passivated and
treated with final thermosetting epoxy powder modified by
polyester resins providing high resistance with mechanical
injury, heat, acids and alkalis solvents, grease, ageing,
corrosion and with standard grey color.
2-2
ATS Components
 The enclosure dimensions shouldn't be less than (W x D x H)
= 800 x 300 x800 mm.
Contactors:
 Two contactors, 4pole, 40A.
 It should be provided with mechanically and electrically
interlock.
Selector switches:
Four selector switches should be used and each one with different
functions as follows:
 Switch_1: Three positions selector switch (Auto-Off-Manual)
to choose an option of the system operation mode.
 Switch_2: Two positions selector switch (Mains+Gen Gen1+Gen2) to choose the type of source. The first position
means the system is mains electricity and one generator, and
the second position means the system is two generators.
Page 21 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
S.
No
Component Name
Required Specifications
 Switch_3: Two positions selector switch (Gen_1 - Gen_2) to
choose the priority between the two generators in case the
operation mode is Auto.
 Switch_4: Three positions selector switch (Source1 Loading Off- Source2 Loading) to choose the manual loading of the
two sources in case the operation mode is Manual.
Terminals:
 Power terminal contacts 4 terminals for each sources and load,
each terminal shall suit a cross section area 16mm2.
 Control and alarm terminals cross section area 4mm2, blade
screwdriver.
 Suitable terminals for Gen-sets’ batteries (Positive / Negative)
and automatic battery charger (L-N).
 Free contact terminals for alarms to be transmitted according
2-2
ATS Components
(Count.)
to Switch_2 position that indicates the type of source:
1) Mains+Gen Position: Three alarms shall be transmitted
 Mains disconnect
 Gen-set run and Gen-set fail.
2) Gen1+Gen2 Position: Four alarms shall be transmitted
 Gen-set_1 run and Gen-set_1 fail
 Gen-set_2 run and Gen-set_2 fail
Automatic Battery charger:
 Automatic Battery charger to suit the PLC and Gen-set batteries
220V AC, 12V DC, 5A, and it shall be adjustable charge current
and voltage.
 In addition, the battery charger shall provide individual
indication and common alarm at Charger failure and output
voltage drops abnormally.
Page 22 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
S. No
Component
Name
Required Specifications
The System shall be designed to fulfill the following Operation sequence:
o When switch_1 is in the position of Auto mode and switch_2 is in
the position of (Mains + Gen-set) that means the system is mains
electricity with a Gen-set, so that when the mains electricity is
available it will be automatically loaded after adjustable timer. If
Mains is disconnected, the PLC timer will give a signal to the Genset to start running and after adjustable timer the Gen-set will be
loaded. If the Gen-set still cut off, the Gen-set must still running for
an adjustable timer, 6 hours as an example, and stop for an adjustable
timer as well, 2 hours as an example, then restart again and so on
until the Mains gets back to be available.
o When switch_1 is in the position of (Auto) mode and switch_2 is in
the position
2-3
of (Gen-set_1+ Gen-set_2) and switch_3 is in the
ATS
position of (Gen-set_1) that means the system is two generators and
Operation
Mechanism
the priority is for Gen-set _1, it is expected that the PLC timer will
give signal to Gen-set_1 to start running and after an adjustable timer
the Gen-set_1 will be loaded for an adjustable timer, after that the
PLC timer will give signal to Gen-set_2 to start running and after an
adjustable timer the Gen-set_2 also will be loaded for an adjustable
timer. All mentioned sequences above shall continue functioned
smoothly as long as no one of the Gen-sets out of work due to any
reasons otherwise the other Gen-set will be working alone for an
adjustable timer then rested for an adjustable timer frequently.
o When switch_1 is in manual mode that means both sources will be
loaded manually by the switch_4 after one of them is available
whatever the type of source is.
o The operation Manual mode shall be working directly without PLC
timer.
Page 23 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
S. No
Component Name
Required Specifications
All timers shall be adjustable and implemented in software; no
external hardware timer will be accepted. The following timers
shall be existed:
1) Mains failure timer
2) Mains restoration timer
2-3
ATS Operation
Mechanism (Count.)
3) Gen-sets and mains loading timers
4) Gen-sets cooling-off timer.
In case the mains fail for more than six hours, controller
shall operate each Gen-set for adjustable set hours and also
adjustable rest hours frequently.
Page 24 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
S. No Component Name
Required Specifications
Digital Instruments (Measuring and Display):

AC (line – line / line – neutral) voltage values, AC current
per phase values, frequency, and total kW display for the
load.

Current transformers:
 Three current transformers connected with mentioned
2-4
ATS Display Unit
module and fixed on Omega roll, DIN rail.
(Digital Card)
 The ratio of CT 60/5 to suit the digital module
parameters.
Indictors , Alarms and Lights for:
-
 Source_1, Source_2 Available
(Yellow LEDS)
 Source_1, Source_2 On load
(Green LEDS)
 Source_1, Source_2 Fail
(Red LEDS)
4-pole incomings mains surge protection device level-1 or level2 at least shall be supplied.
-
Four- pole MCB load circuit breaker 32A, breaking capacity
current at least 16kA.
-
Suitable MCBs protection for all input and output (AC /DC)
circuits.
2-5
Protections
Devices
Incoming Mains, source_1 only,
shall be provided with
programmable protection relay to include the following
functions:

U/O voltage protection.

Phase sequence and phase missing protection.

U/O frequency protection.
 Over & short circuit current protection.
-
Another relays that are needed for control panel ATS.
Page 25 of 26
TECHNICAL SPECIFICATIONS FOR DIESEL GENERATORS 30×15 kVA (CANOPY – TYPE)
+15 GENERAL ATS PANELS
3- Documents And Drawings
S.
No
Component Name
Documents Required
1. Description (operating) manual.
2. Control manual.
3. Fault-finding manual.
4. Arrangement and layout drawings of the board enclosures
indicating equipment and its arrangement and dimensions
including areas of permissible cable entries shall be
provided.
5. Component lists – indicating country of origin, make, model,
and rating etc. shall accompany the layout drawings.
3-1
Automatic Transfer
Switch [ATS]
6. Catalog data and instruction manuals on all electrical devices
and components mounted on or within the board.
7. List of spare parts for all devices with prices, indicating
make, model, and rating etc.
8. The tenderer shall introduce clearly drawing for ATS and
put it inside enclosures of ATS.
9. One original Software program for control panel and three
soft copies.
10. Software cable link (three).
Page 26 of 26
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