| Prod Model: |
WLG |
| Max Rated Current: |
2000A |
| Connection Method: |
Y, D |
| Rated Voltage: |
126kv |
| Type: |
High-voltage |
| Structure: |
Single-column Disconnector |
| Installation: |
Outdoor High-voltage |
| Operation: |
Electric |
| Grounding: |
Single Ground |
| Series: |
Single-Stage |
| Run: |
Vertical Rotation |
| Switching Mode: |
Single Throw-in |
| Certification: |
CE |
| Brand: |
Ville |
Product Description
Type WLG Off-Circuit Tap Changer for transformers
GeneralDrum type off-circuit tap changer (herein referred as tap changer) is applicable to the oil immersed
power transformers with rated frequency 50Hz or 60Hz, highest voltage for equipment from 12kV
to 252kV, maximum rated through current from 250A to 2000A, as well as special transformers
such as furnace transformers, rectification transformers and traction transformers, etc. It regulates
transformer voltage by changing taps with circuit de-energized,thus changing transformer ratio,and
finally stabilizing the output voltage.
According to number of phase tap changer is divided into three categories: three- phase, single
plus two -phase and single phase.
By leads output terminal location, it is divided into three categories: A. middle leads-out; B. two
ends leads-out; C. no leads-out. (See Fig. 1, 2, 3)
There are two mounting locations inside transformer for the tap changer, one is between two
adjacent windings (Type A and Type B), and another is at one side of the transformer winding (C
type).
The operation methods of tap changer include manual operation on top,manual operation at side
with top driving, manual operation at side with bottom driving,and motor driving at side(fig.4.5.6)
The feature of this type tap changer is to save transformer space with compact structure and easy
connection.
The tap changer is applicable to standard type and bell type transformers.
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.
Our advantages:
Quality Assurance
--From the very beginning, VILLE ensures quality in every step to achieve the best quality.
Experience Sharing
--With more than 30 years' experience in power industry, VILLE brings you an optimized solution.
Global Service
--Wherever you are, VILLE global network will support and provide you with value.
Quick Response
--In response to your needs without delay, VILLE knows the value of your time.
Packaging Details: The accessories packed in plywood cases,the main body in nude.
Our Best Service For You
1. Pre sale service
A. Make technical solution
B. Send quotation, technical data sheet and drawing
C. Prepare power transmission plan, testing plan,and shipment plan
2. In sale service
A. Supervise the manufacturing schedule totally in accordance with the plan
B. Send photos to customer during every manufacturing process(hold point)
C. Inform the customer one week before testinng.
3. After sale service
A. Installation and commissioning, training the workers
B. Quick response within 12 hours any time
C. Provide 12 months gurantee period normally.
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
Ningbo Ville Electric Co., Ltd. One of wholly owned subsidiaries of VILLE INDUSTRY, It was invested by VILLE INDUSTRY, It is a well-know listed company in China specialized in R&D of electric power technology, equipment manufacturing and engineering services specialized in research, development, production of transformer and high voltage & low voltage electrical power equipment
Our Transmission and distribution companies can provide with whole solution for transformer substation and switch substation trunkey project!
The rated voltage from 11kV up to 132kV.
It locates in Hi-technical enterprise R & D center zone of Ningbo, Zhejiang province, which is one of the well-know coastal city in China. Its professional engaged in power substation, power plant project and electrical power complete equipments.
Working field: Manufacturing, engineering, designing, executing and commissioning for HV and LV electrical products. Turnkey substation from 11KV to 132KV.
Our transformer factory main working is visiting end user's site do measure and reseach before designe, and providing economic transformer solution for customer. Engineering, manufacturing, executing, commissioning and repairing for different kind of transformer (04kv -500kv ).
The products are mainly used in Steel plant; Power - Fossil fuel plant, Nuclear power plant, Railway, Subway and Airport. Wind power generation; Hydroelectric plant engineering; International power generation plant; Power substation transmission and distribution; Residential housing estate power distribution system and so on.
Transformer factory Product includes:
Three phase double (three)- winding power transformer, generator power transformer, auto power transformer, rectifier transformer for each industry, furnace transformer, movable transformer, traction transformer and reactor, power plant auxiliary and standby transformers, transformers for substations of backbone and distribution networks. Transformer for metallurgical companies etc.
In order to achieve the enterprise's strategic target---being stronger, larger, and superior, we continue to expand throughout the world's markets for power transmission and distribution area. And we also actively attach our team to competition, walking forward to the mission of "First-class worldwide transformer supplier"
Supply the guide drawings and installation manuals information directions on the method of handling, storage, mounting and erection of transformers.
Power equipment application:
Power-fossil fuel plant, Steel plant, Infrastructure- railway, international generation, substation, hydropower station, wind power substation, transmission and distribution.
We has excellent experience and good capacity in complete projects equipments in Generation, Substation, Transmission and Distribution from 400V-330kv, especially in Power plant, Substation construction and Transmission line, including of design, complete equipment, installation, Commissioningand after-sales service, and also design the complete Electrical Solutions according to customer's demand. We are mainly services to International State Power Board, Power Construction Contractor, Power Project Contractor, Factories and the Electric Power Project in the world.
In order to achieve the enterprise's strategic target---being stronger, larger, and superior, we continue to expand throughout the world's markets for power transmission and distribution area. And we also actively attach our team to competition, walking forward to the mission of "First-class worldwide electrical equipment supplier
