Vacuum Interrupter On-load Tap Changer With Liquid Insulation

The in-house developed and produced on-load tap changer (OLTC) is featured by integrated design, liquid (transformer oil) insulation, vacuum interrupter and resistor transition. It is used to change transformer taps under workload and adjust the output voltage, thus improving the quality of power supply and save energies. It is a key component of a transformer.

YFKP OLTC is featured by sophisticated functions, convenient installation and ease of operation. P type vacuum OLTC is applied to transformers to electric furnace and power transformers (voltage no more than 60kV, current no more than 800A, 50/60Hz frequency)

Main features:

1. Substantially extend maintenance cycle, reduce operation costs;

2. Only 2 maintenances needed during 40-year lifecycle of power transformers;

3. Maintenance needed up to 1000 tap-change operations of industrial transformers;

4. Unexposed arcing contacts with no pollution of the insulation fluids to increase the durability of the insulation oil;

5. No potential resistors needed; recovery voltage higher than 25kV during change-over selection.