Application : The generating sets are the most suitable and dependable power source for Industries, Cinema Houses, Commercial complexes and Domestic Lighting purpose etc.

General description: In the generating sets, A.C. Generators are manufactured and tested as per IS: 4722:1992 and Diesel Engines as per IS:10001. The A.C. Generators, through a high quality flexible rubber coupling, are coupled to suitable Diesel Engines.
Standard ratings of Diesel Generators for single phase,240V,unity p.f. are from 2 to 12.5 KVA and for three phase 41V,0.8 p.f. from 5 to 20 KVA. All A.C. Generators have standard 50 Hz frequency.

Construction : The A.C.Generator is having revolving armature from which output is collected. The stator which is stationary is of robust construction and is made of mild steed and carries four poles, each pole is provided with main and auxiliary field windings. The class F insulation is used in construction.
All windings are vacuum impregnated, duly backed at the proper temperature and then coated with gelcoat(RedBeetol) to prevent the ingress of moisture.
The end shields are of cast iron. The screen protection is provided to protect armature winding, field winding and other accessories from dust etc. this also serves as ventilation.

Excitation : The Liberty Generators are self excited self regulated. The generator field retains a high degree of residual magnetism to ensure, that voltage will always build up at starting.

Regulation : Voltage regulation is maintained within 5% of rated voltage and at specified power factor. The speed variation is kept within 4.5% of rated speed of prime mover from full load to no load, the full load speed being the rated speed of prime mover.
All the leads are properly marked by PVC ferrules. The output terminals are housed in terminal box. A cable gland is provided to facilitate the entry of cable.

 

Technical specifications

A. C. Generator

For Air cooled Engine with Steel Base Plate Weight & Packing detail
  KVA KW Electrical
load in HP
Volt Max.Load AMP Effi % Net weight Kg Gross weight g Packing
size CM
Volume
M3
SINGLE PHASE UNITY POWER FACTOR 50 cycles/Sec 1500 RPM
  2 2 2.7 240 8.2 76 150 245 104X56X91 0.471
  3 3 4.0 240 11.6 76 240 375 124X66X101 0.826
  5 5 6.7 240 17.4 76 290 430 124X66X101 0.826
  6 6 8.1 240 23.3 76 300 435 124X66X101 0.826
  10 10 13.6 240 36.6 80 430 675 157X71X117 1.304
  12.5 12.5 17.0 240 52/47 85 425 670 157X71X117 1.304
THREE PHASE 0.8 POWER FACTOR 50 cycles/Sec 1500 RPM
  5 4 5.4 415 7.0 76 290 430 124X66X107 0.826
  7.5 6 8.1 415 10.2 80 310 455 137X66X107 0.967
  10.0 8 10.8 415 13.9 80 405 655 157X71X122 1.359
  12.5 10 13.6 415 17.4 85 425 670 157X71X117 1.304
  15 12 16.3 415 20.9 85 485 670 157X71X122 1.359
  20.0 16 21.7 415 27.2 85 525 775 157X71X122 1.403

 

DIESEL ENGINE

For Aircooled Engine with Steel Base Plate Weight & Packing detail
  Hp Kw A/C W/C No. of
Cyl.
Fuel Con.
Lit/hr
at full load
Lub Oil cons.cc/hr
(1000cc=1Lt.)
Net weight Kg Gross weight g Packing
size CM
Volume
M3
SINGLE PHASE UNITY POWER FACTOR 50 cycles/Sec 1500 RPM
  3.5 2.6 W/C-A/C 1 0.80 11 150 245 104X56X91 0.471
  5 3.7 W/C-A/C 1 1.06 15 240 375 124X66X101 0.826
  7.5/8 5.5/5.9 W/C-A/C 1 1.68/1.80 23/25 290 430 124X66X101 0.826
  10 7.35 W/C-A/C 1 2.24 31 300 435 124X66X101 0.826
  15 11 W/C-A/C 2 3.35 46 430 675 157X71X117 1.304
  20/18 14.7/13.2 W/C-A/C 2 4.48/4.02 62/55 425 670 157X71X117

1.359

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