Just as single-phased transformers, three-phased transformers are used to adapt voltage ot three-phased lines.
Various kinds of connection are available (delta-connected or Y-connected circuits), and multi-phase secondary windings can be created.
Electrical characteristics
- Power : up to 100 kVA (higher power on request)
- Voltage : up to 1000V (higher voltage -> please refer to High voltage transformers)
- Insulation voltage : up to 5kV DC (higher voltage -> please refer to Insulation transformers)
- Current : up to 500A
- Frequencies :
- Industrial : 50Hz and 60Hz
- Railways : 16 2/3 Hz and 50Hz
- Military : 400Hz
Applications
- General purpose (voltage adaptation, etc…)
- Autotransformer
- Industrial frequency
- Railways frequency
- Military frequency
Terminals
- Screw terminals
- Protected terminals
- High voltage insulated terminals
- Flat tags or U terminals
- Pins for P.C.B.
- Connectors
Standard design
- Bare
- Encased
- Safety casing
- Resin moulding : epoxy, polyurethane, silicone, loaded resins (resins may be requested in accordance with the standard UL 94 V0, fire smoke, etc…)
- Other casing on request