Supply, Installation, Testing Commissioning of 250 KVA 320 KVA DG Sets at CBSE Regional office, Digha, Patna

Work:- Supply, Installation, Testing & Commissioning of 250 KVA & 320 KVA DG Sets at CBSE Regional office, Digha, Patna

Supply, installation, Testing & Commissioning of 'Silent Type Diesel

Generating set as per CPCB IV + or better norms along with having Prime

Power Rating of KVA as below, 415 volts at 1500 RPM, 0.8 lagging power

factor at 415 V suitable for 50 Hz, 3 phase system & for 0.85 Load Factor,

6.1 including testing at factory and site with fuel, load for test and other

necessary arrangements Complete as per CPWD specifications, should have

QR code which should contain drawing, test report OEM manual,Geo Tag of

manufacturing location, rating plate as per relevant IS Code etc. and

consisting of the followings:

(A) Diesel Engine:

Turbocharged Diesel engine 4 stroke water cooled, multi cylinder,

dynamically balanced fly wheel, electric start of suitable BHP at 1500 RPM

suitable for above output of alternator at 40 Degree C, 50% RH & at 1000

Meter MSL, capable of taking 10% over loading for one hour after 12 hours

of continuous operation. The engine will be with Electronic governor, Dry

type Air filter with service indicator, first filling of engine fuel (after

commissioning) lubricating Oil, Coolant and other consumables complete

with all the required accessories, the Electronic governor shall be as per ISO

8528.The engine shall comply to the latest CPCB norms (CPCB IV + or better)

and Conforming to BS 5514, BS 649, IS 10000, IS 10002, IS 13018 and as per

CPWD specifications.

(B) Engine mounted Instrument Panel fitted with and having digital display

for following: (i) Start-stop switch with key (ii) Water temperature indication

(iii) Lubrication oil pressure indication (iv) Lubrication oil temperature

indication (v) Battery charging indication and Voltage indication (vi) RPM

indication (vii) Over speed indication (viii) Low lubricantion Oil trip indication

(ix) Engine Running Hours indication (x) Fuel Level

(C) Alternator:

Synchronous alternator rated of appropriate KVA, 415 volts at 1500 RPM, 3

phase 50 Hz, AC supply with 0.8 lagging power factor at 40 Degree C, 50% RH

& at 1000 Meter MSL. The alternator shall be having Screen Protected Drip

Proof (SPDP) enclosure IP23, brushless, continuous duty, dynamically

balanced rotor, capable of taking 10% over loading for one hour after 12

hours of continuous operation, self cooled,self-excited and self-regulated

through AVR conforming to IS13364(Part 2)/IS: 4722/BS 2613 suitable for

tropical conditions and with class- H insulation.

(D) Base Frame & Foundation:

Both the engine and alternator shall be mounted on suitable base frame

made of MS channel with necessary reinforcement which shall be installed

on suitable cement concrete foundation and vibration isolation arrangement

as per recommendations of manufacturer.

Daily service fuel tank of suitable liters capacity as per CPWD Specifications,

fabricated out of 3 mm thick M.S. sheet complete with all standard

accessories and fuel piping between fuel tank and diesel engine with MS class

'C' pipes of suitable dia. Complete with valves, level indications & accessories

as required as per specifications.

(F) Exhaust System:

Dry exhaust manifold with hospital type exhaust silencer and catalytic

(G) Starting System:

12V/24V DC starting system comprising of starter motors: voltage regulator

and arrangement for initial excitation complete with suitable numbers of

batteries (180 AH capacity lead acid SMF type) as required as per

specifications. The battery shall be housed inside the acoustic enclosure of

(H) Acoustic and weather proof enclosure with arrangement for fresh air

intake for cooling of the engine & alternator, extraction, discharging hot air in

to the atmosphere and the temperature rise inside the enclosure, noise level

outside enclosure. The acoustic enclosure should be suitable for cable

connection/connection through bus-trunking. Such arrangements on acoustic

enclosure should be water proof & dust-proof conforming to IP-65

protection. The enclosure shall be as per CPCB IV + or better norms etc. and

as per CPWD specifications.

Digitally signed by PRIYA

Free standing floor mounted IP 42 automatic mains failure control panel

including auto by-pass, suitable for KVA as below for silent type DG set

complete with relays, timers, set of CTs for metering & protection and energy

analyser to indicate currents, phase and line voltages, frequency, power

factor, KWH, Kilo Volt Ampere Reative Hour (KVARH), KVA (Phase & Total),

KW & provision for overload, short circuit, restricted earth fault, under

frequency, power (aluminum) and control (copper ) cabling of suitable size

upto 15 meter between AMF panel, LT Panel and DG Set including

connection interconnection etc. as required, all complete and inter locking

and communication/ Ethernet /RS485/SNMP port open protocol for BMS

integration including suitable software, the panel shall be of DG Set OEM

make etc. as per approved by Engineering in charge and including the

Suitable numbers and appropriate capacity 4 pole motorised electrically

operated draw out with cradle type 3 position ACB/ MCCB with electronic

1 release for O/C & E/F and shunt trip.

2 Auto/Manual/Test/Off selector switch

Protection for under and over voltage phase reversal (2 nos Over voltage

3 relay, 2 Nos. reverse power relay and 2 Nos. under voltage relay).

3 Sets of current transformers 15 P10 accuracy for protection and 15

4 VAclass-I for metering

Energy analyser unit to indicate current, Voltage( L-N & L-L), kW, kVA (Phase

5 & Total), Frequency, KWH, PF

6 LED Indicating lamps for load on mains and load on set.

7 Fuse/ MCB for instruments.

Battery charger, complete with transformer/ rectifier, D.C. voltmeter and

8 ammeter, selector switch for trickle, off and boost and current adjustment.

9 Main supply failure monitor.

10 Supply failure timer

11 Restoration timer

Control unit with three impulse automatic engine start/stop and failure to

12 start lockout.

13 Impulse counter with locking and reset facility

14 ON/OFF/Control circuit switch with indicator

15 Audio/Video annunciation for

(i) High water temperature (ii) Low lubricating oil pressure (iii) Engine over

speed (iv) Engine fails to start (v) Full load/maximum load warning

Protection for over/under Frequency, Loss of AC sensing, Over Current,

16 Unbalancing load with suitable number of relays and accessories

17 Maintenance notification based on Engine Run Hour & due date.

Load Management through PLC to achieve auto opening and closing of

incomer breakers, bus coupler switching of essential panel , interlocking

providing signal to AMF Panel for load status and AMF shall give command to

DG Set to auto start / auto stop depending upon load status and requirement

etc. and necessary hardware and software required to perform the operation

18 shall be provided by the contractor including all control wiring.

Digitally signed by PRIYA