Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

WDG Off-Circuit Tap Changer for Transformers

Basic Info

  • Model NO.: WDG 

  • Connection Method: Y, D

  • Trademark: Jinli Tap Changer

  • Specification: IEC CE, ISO

  • HS Code: 8535900090

  • Max Rated Current: 3000A

  • Rated Voltage: 220kv

  • Transport Package: Wooden Cases

  • Origin: China , Liaoning

Product Description

WDG 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. 

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.

Our Product

 Our company is specialized in developing and manufacturing all kinds of tap changers. Currently, the product line includes on load capacity and voltage regulating tap-changer、on-load tap changer、drum type tap selector、cage type tap changer、linear tap changer、round type tap selector and other more products which are total over 5000 kinds of specifications and more than 30 patents.

 Jin company follows the development concept of "integrity, Gung Ho, cooperation and win-win", adheres to the business purpose of " quality and credibility is the first", is committed to provide first-class products and service for customers, shares information and resources with customers, and creates a win-win situation, in order to create higher value for customers.


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