Power
Power Transformers
High-capacity step-up and step-down transformation for transmission and industry.
3.15 MVA – 50 MVA · up to 132 kV
Data sheet
Technical data
| Rating | 3.15 MVA – 50 MVA |
|---|---|
| Voltage class | up to 132 kV |
| Rating | |
| Capacity | 3.15 MVA – 50 MVA |
| Voltage class | 11, 22, 33, 66 or 132 kV |
| Phases | Single or three phase |
| Testing | |
| Type testing | Designs type-tested up to 20 MVA, 33/11 kV at CPRI / ERDA |
| Construction | |
| Core | Generally CRGO |
| Conductor | Copper or aluminium, per customer requirement |
| Preservation | Conventional conservator, free breathing (dehumidifier / air-cell bladder) |
| Cooling | |
| Cooling | ONAN / ONAF |
| Cooling arrangement | Corrugation or pressed-steel radiators |
| Insulating fluid | PCB-free mineral oil / Midel 7131 / silicone oil / Nynas Nytro |
| Regulation | |
| Tap changer | OLTC with RTCC & AVR above 500 kVA, if required |
| Environment | |
| Ambient, temperature rise, altitude | As per customer specification |
| Standards | |
| Designed to | IEC 60076, IS 2026, ANSI, BS |
Final ratings, losses, impedance and dimensions are confirmed in the guaranteed technical particulars (GTP) for each order.
Overview
Oil-immersed power transformers for utilities, power projects and heavy industry, built with CRGO cores and copper or aluminium conductors to customer specification.
Power transformers are used in high-voltage networks to step voltage up for transmission and down for sub-transmission and industrial supply. Trafo Power builds them as free-breathing units with a conventional conservator (with a dehumidifying breather or air-cell bladder), filled with PCB-free mineral oil, Midel 7131, silicone oil or Nynas Nytro as the customer requires. On-load tap changers with RTCC and AVR can be supplied.
Applications
- Transmission & sub-transmission substations
- Generation step-up
- Utility power projects
- Heavy industrial plants
Design & engineering features
- CRGO core; copper or aluminium conductors
- ONAN / ONAF cooling with corrugation or pressed-steel radiators
- Conventional conservator, free-breathing with dehumidifier or air-cell bladder
- On-load tap changer with RTCC & AVR above 500 kVA, on request
- Choice of insulating fluid: PCB-free mineral oil, Midel 7131, silicone oil, Nynas Nytro
- Indoor or outdoor installation; altitude and ambient to specification
Enquire
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