Email:i-trade1@lnjldq.comLiaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

off-Circuit Tap Changer for Transformer Switch

Basic Info

  • Model NO.: WSG

  • Connection Method: Y, D

  • Trademark: VILLE

  • Specification: IEC CE, ISO

  • HS Code: 85

  • Max Rated Current: 1000A

  • Rated Voltage: 126kv

  • Transport Package: Wooden Cases

  • Origin: Ningbo

Product Description

Type WSG Off-Circuit Tap Changer for transformers


Type WDG/WLG/WSG Off-Circuit Tap Changer (herein referred as tap changer) is a drum structure off-circuit tap changer applicable for power transformer and industry transformer as well as traction transformer.

It can only be operated when the transformer is de-energized.

By number of phase, tap changer can be divided into three-phase, single plus two-phase and single phase.

By leads output terminal location, it is divided into middle output leads, two ends output leads and without fixed leads.

Type A and Type B tap changers can be mounted between the coils of the transformer; and type C is to be mounted at side of the transformer coils.

The operations of the tap changer are top manual, side manual from top transmission or from bottom transmission or motor driving at side.

There are 6 regulation connections as standard design: linear, single-bridging, double-bridging, Y-D change-over, series-parallel change-over and reversing. Refer to table 2 for the basic connection methods code and Fig.2 for connection schematic diagrams. For special requirement, please contact us with details.

Designation of tap changer model 

Main technical data

 Service condition

1 Service temperature range for tap changer in oil medium is -25ºC ~100ºC

2 Service environment temperature range of tap changer is -25ºC ~ + 40ºC . Relative humidity

is less than 85%.

3 Perpendicular deflection between ground and tap changer after being mounting on

transformer shall be less than 2%.

4 There shall be no serious dust, explosive gas or corrosive gas at site.

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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