PRODUCT RANGE

• Power & Distribution Transformer upto 10MVA of Voltage Class 36KV

• Vacuum Varnish Impregnated Dry type transformer up to 2MVA of Voltage Class 12KV

• Salt Bath Transformer

• Station Auxiliary Transformer

• Furnace Transformer

• Battery Charger of different ratings

• Star rated Transformers as per BEE Specifications

Our current design transformer 25KVA, 63KVA, 100KVA, 150KVA, 160KVA, 200KVA, 250KVA, 315KVA, 500KVA, 630KVA & 1000KVA, 11KV/433V have been successfully Short Circuit Tested at C.P.R.I. Bhopal/ Bangalore. Our 25, 63, 100, 150, 160, 200, 250, 315, 500, 630 & 1000KVA 11KV/433V & 750KVA 33KV/433KV Transformers have also been Impulse Tested at Jadavpur, Kolkata/CPRI Bhopal.

Our Short Circuit Test Certificate No. are as follow:

25KVA at CPRI Bangalore
SC/91/147/A
04. 07. 91.
63KVA at CPRI Bangalore
SC/91/147/B
04. 07. 91.
100KVA at CPRI Bangalore
SC/91/147/C
04. 07. 91.
100KVA at CPRI Bhopal
92/Stn.II/289
14. 09. 92.
200KVA at CPRI Bhopal
92/Stn.II/288
14. 09. 92.
250KVA at CPRI Bhopal
92/Stn.II/287
14. 09. 92.
150KVA at CPRI Bhopal
94/Stn-1/8
07. 01. 94.
500KVA at CPRI Bhopal
94/STN-1/360
09. 12. 94.
150KVA at CPRI Bhopal
94/STN.1/IMP-359
09. 12. 94.
160KVA at CPRI Bhopal
95/Stn.2/545
25. 10. 95.
315KVA at CPRI Bhopal 
C/96/222/A
25. 06. 96.
630KVA at CPRI Bhopal
99/STN-1/251
06. 09. 99.
1000KVA at CPRI Bhopal
99/STN-1/252
06. 09. 99.
160KVA at CPRI Bangalore
SC02282A
10.07.2002.
200KVA at CPRI Bangalore
SC02282B
10.07.2002.
100KVA at CPRI Bangalore
SC03248A
12.06.2003.
100KVA at CPRI Bhopal
S2050473
22.09.2005.
25KVA at CPRI Bhopal
S2050475
22.09.2005.
63KVA at CPRI Bhopal
S2050474
23.09.2005.

Our Impulse Test Certificate No. are as follows:

25KVA at Jadavpur University
Ref.No.E-13/24/91
25. 07. 91.
63KVA at Jadavpur University
Ref.No.E-13/T/71/91
31. 08. 91.
100KVA at Jadavpur University
Ref.No.E-13/T/55/93
25. 09. 93.
200KVA at  Jadavpur University
Ref.No.E-13/T/170/92
07. 11. 92.
250KVA at Jadavpur University
Ref.No.E-13/T/130/87
12. 12. 87.
150KVA at Jadavpur University
Ref.No.E-13/T/108/94
11. 02. 94.
500KVA at Jadavpur University
Ref.No.E-13/35/91
11. 02. 91.
160KVA at CPRI Bhopal
Ref.No.95/Stn.2/Imp-248
27. 10. 95.
750KVA/33KV Jadavpur University
Ref.No.E-13/31/96
26. 02. 96.
315KVA/11KV Jadavpur University
Ref.No.JU/HVL/96-97/315
24. 08. 96.
630KVA at CPRI Bhopal
Ref.No.99/STL/IMP-172
06. 09. 99.
1000KVA at CPRI Bhopal
Ref.No.99/STL/IMP-173
06. 09. 99.
160KVA at CPRI Bhopal
43/1/2002-HV/0154/STANELEC
10.07.2002.
200KVA at CPRI Bhopal
43/1/2002-HV/0153/STANELEC
10.07.2002.
100KVA at CPRI Bhopal
43/1/2003-HV/0840/STANELEC
24.06.2003.
25KVA at Jadavpur University
Ref.No.E-13/30/05
11.11.2005.
63KVA at Jadavpur University
Ref.No.E-13/31/05
11.11.2005.
100KVA at Jadavpur University
Ref.No.E-13/28/05
11.11.2005.

 

TECHINICAL DETAILS OF OUR MANUFACTURED TRANSFORMERS:

a) TANK

Tank wall will be constructed from Tested quality M.S. Sheet having only two welding at two corners and it will be double welded. It will have sufficient stiffener of continuous welded on the tank wall. The tank will be subjected to vacuum test and will be capable of Extra 25% pressure than the normal pressure without distortion. Other details/Fittings will be provided as per your specification. We shall use the tank as per CPRI approved Drawing.

 

b) CORE

We shall use M4/M-5 Grade or better grade CRGO Lamination with Karlite Insulation on both side and fully annealed. Our core will be of "Mitered" joint to reduce the No Load current and losses. The core step will be properly assembled to reduce noise minimum level. Other details will be as per your specification. No cut core will be used i.e. But joint core will not be used. The core area etc. will be as per Short Circuit Test design. Core cross section will be as per CPRI Drawing.

 

c) WINDING

We shall use EC Grade Copper D.P.C. (Double Paper Cover) strip in LT and DPC wire in H.T. The core and coil assembly will be subjected to drying and oil will be filled in thereafter. Other details will be as per your Specification.

d) SHORT CIRCUIT CAPACITY

We have done Short Circuit Test of 25KVA, 63KVA, 100KVA, 150KVA, 200KVA, 250KVA, 160KVA, 315KVA, 500KVA, 630KVA and 1000KVA Transformer from C.P.R.I. Bhopal. The Test has been conducted as per ISS 2026/1977.

e) TAP CHANGER

Externally operated OFF Load Tap changing Switch on HV side will be provided. It will be having all the feature as per your pecification. Further now we have introduced one mechanical barrier so that you cannot change tap switch from position (1) (+5%) to Position 5(-5%) by just rotating one slot i.e. to come to +5% from –2.5% you have to travel all the step i.e. overshoot is avoided. Rated Load will be vailable in all the tap position.