off load round voltage regulating tap changer

off load round voltage regulating tap changer





























off load round voltage regulating tap changer

Quick Details

Place of Origin: China (Mainland)                                Brand Name: XINCHENG

Product name: off circuit tap changer                          Function: Voltage Regulating

Type: tray form                                                                 Model Number: WSP

Rated current: 63A~ 250A~ 400A                               Rated voltage:  10KV~35KV

Phase Type: Single or Three                                          Grade No.: 3 – 6 or others

Mechanical Life: 20000times

Supply Ability: 20000 Piece/Pieces per Month


off load round voltage regulating tap changer

Product Description

The switch adopts new structure, new material, new technology, having the advantages of reasonable structure, good hand-feeling ,Flexible rotary, reach the position accurately etc, It is the improved product of the off-circuit tap changer in chinaat present, which applies to the three-phase oil-immersed electrical power transformer with the frequency of 50HZ,60HZ, the rated voltage of 10KV,35KV,the rated current of 63A,125A,250A. It can be directly fixed on the tank cover of the trans-former, operation under the off-circuit condition.


Off circuit tray form tap changer (WDP and WSP series)

The specification of the product is rated voltage 35KV(highest voltage for equipment 40.5 kV) and below, rated current 400A and below.


WSP II1,WSP III1 series off-circuit tap changer (tray form)

This tap changer which is made of new structure,new material and new technology has the merits of reasonable in structure,handle freely, turning flexibly, locating exactly, good hermetically performance and small value of contact resistance ,it has become the new generation product in these days and has been certified by Ministry Department of China in December 1995. There are two sorts of products for this tap changer, it is suitable for oil-immersed three phase or single-phase power transformer with frequency 50Hz or 60Hz, highest voltage for equipment 12kV and 40.5kV and 72.5kV, rated current 63A, 125A, 250A and 400A. It can be fixed directly on transformer tank cover or tank wall, they must be working under non-energized condition.


The current of 63A tap changer is applicable to 5~8mm transformer cover (except single phase);

The current of 125A tap changer is applicable to 5-10mm transformer cover;

The current of 250A and 400A tap changers are applicable to 8-14mm transformer cover;

The moving contact’s structure is clamping type or rolling type. The clamping type has no code number. If you need the rolling type, please illustrate in ordering.

We can manufacture the tap changer with raised highness beneath the cover in accordance with the customer’s requirement; If you have other specific requirements please detail it in ordering.


 Technical Data
 Specifications WSP 63 WSP 125 WSP  250
         Phase number  three-phases
 Connection mode Central point(Ⅱ)Neutral Point(Ⅲ)
Rated through current(A) 63 125 250
Short-circuit capacity Heat stableness current(KA/2s) 1.6 2.5 3.75
Dynamic stableness current(KA) 4 6.25 9.375
  Rated frequency 50~60
Insulation level(KV) (KV)Rated Voltage 10KV 20KV 35KV
Power-frequency withstand Voltage(50Hz/1min) 42KV 55KV 95KV
Impulse(1.2/50μs) 75KV 125KV 250KV
Sealing Performance(KPa/24h)                           60
Machine life(Thousands of times) 2




















































































  1. Can you offer test report of the product?
    A: We test every product before packing and delivery. Test report will be provided by requirement.
    2. Can you offer components of the products?
    A: Yes, we also sell components separately too.
    3. Shall we pay for the sample charges? How to pay and how to deliver us?
    A: For low cost samples, we providing with FOC, customer need to pay for the freight through Western Union etc or providing with freight collection account of courier like DHL, THT, FedEx, the sample will be sent by courier.
    4. Could you manufacture the products according to my drawing or sample?
    A: Yes, ODM is available, we also could manufacture the products according to customer’s drawing or replicate sample.
    5. If new mould is needed, shall we pay for the mould cost? If mould cost will be refunded?
    A: Yes, customer will be asked to pay for the mould cost, this mould cost will be deducted gradually from your orders.
    6. More question
    A:Feel free to contact me, you will get immediately reply


off load round voltage regulating tap changer

Packaging & Delivery

Packaging Details

Packaging Details    standard export packing Carton Box + Wooden Pallet

Delivery Time  2-4 weeks upon deposit

Port: Tianjin, Shanghai, Qingdao


Please Contact Us

 Miss: lydia

Mob: 86-13752439076      Fax: 86-22-60863016

WeChat : 86-13752439076   WhatsApp: 86-13752439076