Distribution
Distribution transformers
Low-loss, BIS-marked distribution transformers for utilities, industry and infrastructure.
25 kVA – 3,150 kVA · up to 33 kV

Data sheet
Technical data
| Rating | |
|---|---|
| Capacity | 25 kVA – 3,150 kVA |
| Voltage class | 0.433, 11, 22 and 33 kV |
| Construction | |
| Core | CRGO or amorphous, to customer requirement |
| Type | Hermetically sealed (gas cushion or fully filled) or conventional, with a conservator |
| Protection | |
| CSP | Completely self-protected (CSP) up to 400 kVA |
| Regulation | |
| Tap changer | On-load tap changer (OLTC) with RTCC and AVR above 500 kVA, on request |
| Cooling | |
| Cooling class | ONAN/ONAF, with corrugated fins or pressed-steel radiators |
| Compliance | |
| BIS | BIS-marked to IS 1180 (Part 1): 2014 |
| Standards | |
| Designed to | IS 1180 (Part 1): 2014, IS 2026, IEC 60076, ANSI and BS |
Final ratings, losses, impedance and dimensions are confirmed in the guaranteed technical particulars (GTP) for each order.
Overview
Our three-phase distribution transformers are built as free-breathing or hermetically sealed units. Conventional units have a conservator with a breather; hermetically sealed units have a bolted cover with a gas cushion, or are fully filled. Our distribution transformers are BIS-marked to IS 1180 (Part 1): 2014, and designs follow IEC 60076 and IS 2026.
Applications
- Utility distribution networks
- Industrial and commercial supply
- Infrastructure and real estate
- Power supply for remote facilities
Design and engineering features
- CRGO or amorphous core, per requirement
- Hermetically sealed (gas cushion or fully filled) or conventional, with a conservator
- Completely self-protected (CSP) up to 400 kVA
- On-load tap changer (OLTC) with RTCC and AVR above 500 kVA, on request
- ONAN/ONAF cooling, with corrugated fins or pressed-steel radiators
- Indoor or outdoor; colour and safety devices as specified

Request a quote for distribution transformers
Share your requirements: rating, voltages, standards, site and timeline. Our engineers will follow up with guaranteed technical particulars (GTP) and guaranteed losses.
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