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Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Plastic Hand-wheel Tap-changer

Plastic H and - wheel T ap-changer On load tap changers are the ones where taps in the transformers change automatically as per loads variations. The appropriate taps are selected by the transformers tap changers mechanism automatically in accordance with the loads and the voltage drops as a...

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Product Details

Plastic Hand-wheel Tap-changer 

On load tap changers are the ones where taps in the transformers change automatically as per loads variations. The appropriate taps are selected by the transformers tap changers mechanism automatically in accordance with the loads and the voltage drops as a result to coop with the set or desired transformer turns ratio. There is always a wide variety of taps available in the transformer to meet the system requirements.

The off load tap changers are Non automatic and are those transformers where you can change the tap manually, if required, but with the transformer completely DE-energized.

Various special tap changers can be designed and manufactured according to requirement of customers. Our company is the first one in domestic market of China to invent and have fully independent proprietary intellectual property rights of intelligent on load capacity and voltage regulation technology professional manufacturer. The series of products has been identified by experts to fill in the domestic industry gap and reach the international advanced level. At present, this product has been stably operated in the state grid.

Model Explanation
 WST □ - □/□-□╳□
    W:  off-circuit
    S :  three-phase or D for single phase
    T :  linear type tap chager
    □:  voltage regulation model
    □:  rated current
    □:  rated voltage
    □:  number of tapping heads
    □:  number of tapping position

Voltage Regulation Model
    I  :  terminal point
    II :   central point
    III :  neutral point
   IV :  Y-△ conversion
   V :  series-parallel connection

Samples Technical Data

Specifications

WST 30

WST 63

WST 125

WST 250

WST 400

WST 500

Phase number

three-phases

Connection mode

Central point(Ⅱ) Neutral Point(Ⅲ) Terminal Point(Ⅰ)

Rated through current(A)

30

63

125

250

400

500

Short-circuit capacity

Heat stableness current(KA/2s)

0.7

1.6

2.5

3.75

4

5

Dynamic stableness current(KA)

1.8

4

6.25

9.375

10

12.5

           Rated frequency

50~60

Insulation level(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

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