WST Series Off-circuit Tap Changer(Linear Type)

Voltum's Products

WST Series Off-circuit Tap Changer(Linear Type)

This kind of switch applies to the single-phase, three phase, combination oilimmersed transformer electrical power withfrequency of 50HZ, 60HZ, rated voltage of 10KV, 35KV, rated current of 30A~500A; the voltage-regulating mode are: central part, terminal point neutral point, which can be directly fixed on the tank cover of the transformer, exchange under the off-circuit condition.

Model Introduction

Zh2: Off-circuit three phase combined linear tap changer (combined two units)
For Example: WSTⅣ63/10-6×5ZH2
This model is composed of one WST II 63/10-6X5 and one WST IV 63/10-3X2 with two operation systems.
ZH3: Off-circuit three phase combined linear tap changer (combined three units)
For Example: WSTⅤ63/20-6×5 ZH3
This model is composed of one WST V 63/20-5X2 and two WST II 63/20-6X5 with two operation systems.
This model is composed of one WST V 63/20-5X2 and two WST II 63/20-6X5 with two operation systems.
B—Linear tap changer with operation system of plate tap changer
F—Reverse installation linear tap changer
H—Linear tap changer with guard plate
G—Tap changer used in dry type transformer

Technical Data

1. The tap changer of 30A current applies to the tank cover thickness of 3~6mm
2. The tap changer of 63A current applies to the tank cover thickness of 5~8mm
3. The tap changer of 125A current applies to the tank cover thickness of 6~10mm
4. The tap changer of 250A current applies to the tank cover thickness of 8~12mm
5. Model No. with D stands for double-sealed structural switch
(Means there is a sealing ring mounted on and underthe tank cover)
6. Height below tank cover can be adjusted according to request