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QB-6000/27.5 traction transformer
QB-6000/27.5 traction transformer
QB-6000/27.5 traction transformer is suitable to be used with Four quadrant traction converter to supply power to Four quadrant traction converter, or the traction converter conversely supply power to the traction transformer by using SPWM modulating wave and feedback the power to grid. It is widely used in electric locomotive test stand and power generation system which uses converter.
Main Technical Parameters:
1. Rated frequency: 50HZ (frequency changing range: 49Hz-51Hz)
2. Rated Capacity:6000KVA
- Primary rated voltage:27.5KV,
- Primary rated current:220A,
- Traction winding number:4
- Secondary rated capacity: 4×1380KVA,
- Secondary rated voltage:4 ×970V
- Secondary rated current: 4×1423A,
- Max. Working Current:4×1440A,
- Short circuit impedance :35%,
- No-load current: ≤1%In.
- Cooling method:forced-oil & air cooling,
- Oil type:25# transformer oil,
- Temperature rise limit:70K,
- Recommended use environment:
- Working environment temperature: -5℃~+45℃,
- Storage temperature: -25℃~+60℃,
- Secondary cooled water temperature: not higher than 40℃,
- Relative humidity: Daily average value not bigger than 95%,
- Altitude:<1000m