Off-circuit Cage-form Tap-changer

Product purpose and application scope
WSL Series off-circuit changer is used for oil-immersed transformer with no-load tap changer. It is usually of
cage type structure. The switch transition type is variable with its inner structure. It has linear regulating, single-
bridge stridden over connection, double-bridge stridden over connection, Y-- Delta transition, series--parallel
connected transition, positive r reverse regulation ate. This tap changer is classified into two type, one called
tank head type, the other called bell covered type. The operation method can be classified into two type, one is
handled on the tank head or to the grounding, the other is driven with motor. They are used for power
transformer, rectification transformer or furnace transformer in following specification range, rated frequency
with 50Hz or 60Hz, rated voltage with 35kV, 66kV and110kV, rated current with 250A~2000A. This type of tap
changer can only be operated in transformer under non-energized condition.

Company Profile:
Main product line: Tap changer and HV switchgear
Tap changer manufacturing with fullest vertical integration
Tap Changer Products Range On-Load Tap Changer:
* Conventional OLTC for transformer with voltage up to 765kV
*Vacuum OLTC for oil transformer with voltage up to 765kV
*Vacuum OLTC for dry transformer with voltage of 72.5kV
Off-Circuit Tap Changer
* Application for the transformer with voltage up to 765kV



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