WBPWD/EE/PED/NIQ35_2nd Call /2020-2021

Amount

SUB-HEAD 1--SUPPLY,DELIVERY,COMMISIONING & TESTING OF DG SET Supply,delivery at site on foundation,commissioning and testing of 25KVA,415 V,50 Hz,3 phase new DG set, comprising of Engine,alternator,separate AMF panel,base frame,Fuel tank,Battery,CPCB-II approved Engine & Acoustic Enclosure having following specifications:-

Engine

Make-Ashok Leyland/Kirloskar/Cummins

Engine type:-4 Stroke Diesel Engine

Rated Output:34.2 BHP or Higher

Duty: Prime

Cooling: Liquid Cooled(EG Compleat 50:50)

Cylinder: 2(In line)

Aspiration:-Turbocharged,Charge Air cooled

Type of Governer: Electronic

Fuel Tank Capacity: Minimum Capacity 75 ltr

Fuel Consumption at 75 % rated Load with Radiator or fan: 4.8 Ltr/Hr or less

Fuel Consumption at 100 % rated Load with Radiator or fan: 5.5Ltr/Hr or less

Overload Capacity :10% overload for one hour for every 12 hours continuious running running at full load or better

Engine instrument panel : Consisting of starting switch with key,Lube oil indicator,RPM indicator and hour meter.

Safety Controls:Emergency Stop,Low Lube oil pressure warning/shutdown, Warning /Shutdown,sensor failure indicator,Engine overspeed indicator,Battery charging and low battery indicator.Exhaust Silencer:Residential type

Starting system:12 V starting system complete with starter motor,charging alternator with rectifier and Cut out as per manufacturer standard.

Battery:Lead Acid,Low maintenance or SMF and conforming to relevant IS Specification with low/high battery voltage and weak Battery warning.

ALTERNATOR

Make:Stamford(CGT)/Leroy Somer/Ashok Leyland/Kirloskar/Cummins

Rating:415 V,3 phase,50Hz, 25 KVA,1500 rpm

Type:-Brushless,screen protected,Revolving field ,self excited and self regulated

Insulation: Class H

Protection: screen protected drip proof with Min IP-23 degree of protection

Voltage regulation (Max):+1 %

Winding connection:-Stator-double layer lap, Rotor-Dynamically Balanced

Total Distortion factor: No load<1.5 %, Non distoring balanced linear load<5%

Total Harmonic distortion in output waveform:No load<1.5 %, Non distoring balanced linear load<5%

AMF PANEL

Cubical type floor mounted AMF panel made 16 SWG sheet steel,duly pretrated,powder coated painted and acsthetically finished ,suitable for controlling of 25 KVA DG set having following specifications/features.

i)_____A, EDO type ACB with O/L,S/C,E/F protection and microproceessor based protection release,U/V release etc.--2sets

ii) In Built By-Pass switch for rated capacity

iii)On-delay timer for load change over

iv)On-delay timer for engine shut OFF.

v)Engine On-OFF switch(Push Button type)

vii)Minimum five number indicating lamps to indicate "mains ON", "load on mains","set running","load ion DG sets" and "battery charger On".

viii)Audio Visual alarm for "Low Lubricating oil pressure","High water temperatur",Start failure, and "DG overload"

x)Microprocessor based relay with composite meter for digital display of following.

Generator Voltage/AC Mains voltage:415 V

Generator current in all phases:35 A

Frequency:50 Hz

Power factor: 0.8(lagging)

Energy

Indication for alternator supply

Running time indications number of hours of operation and service intervals,service due indications.

The AMF panel must be designed to ensure trouble free performance and ensure switching over Electrical Load of DG within 15(fifteen) second from the instant of mains failure.

ACOUSTIC ENCLOSURE

The DG set should have integrated acoustic enclosure at the manufacturing state itself. High quality acoustic enclosure must be certified as per CPCB-II norms.

BASE FRAME

Common iron channel fabricated base frame containing the engine and alternator ,mounted on AVM pads and having provision for lifting Hook.

TERMS & CONDITIONS

i) Rate should be quoted inclusive of all applicable taxes and duty etc.

ii) All materials,equipments & aceessories must conform to relevent IS/IEC specifications.The DG set to be supplied must be from the authorized OEM of the respective Engine manufacturer.

iii)Necessary manufacturer's test certificate for Deisel Engine,Alternator etc. will have to submit in triplicate copy during delivery of the equipment.

iv) Copy of "type approval certificate " and Certificate of "COP" must be produced at the time of delivery issued from competant Authority(as per CPCB-II).

v)Circuit diagram for AMF panel must be submitted from the Manufacturer/OEM.

vi) Efficiency not less than 90%

vii) The entire set must be warranted atleast 18 months from the date of Delivery/12 months/5000 Hrs from the date of Commissioning whichever is earlier.However Engine & Alternator should be warranted of 2 year/5000 hrs whichever is earlier.

Mega Enterprise

D. D. ENTERPRISE