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Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Neutral 3 Phase Round Tap Changer

Neutral 3 phase Round Tap Changer The transformer voltage at the load side desired to be constant or as close to the design value. But the load voltage may vary according to current drawn by the load or supply voltage. Secondary voltage = (supply voltage or primary voltage) / Turns ratio. Based...

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Product Details

Neutral 3 phase Round Tap Changer
The transformer voltage at the load side desired to be constant or as close to the design value. But the load voltage may vary according to current drawn by the load or supply voltage.
Secondary voltage = (supply voltage or primary voltage) / Turns ratio.

Based on the above equation to maintain constant secondary voltage/load voltage or as close to the desired value it is needed to change the turn’s ratio. The neutral point three phase round off load tap changer of the transformer performs this task to change the turn’s ratio. The tap changer basic function is that it removes or connects some portion of the winding to the load side or source side. Tap changer can be located on primary side or secondary side. However it will be placed on high voltage winding side.

This neutral point round type three-phase tap selector is one of our typical products . 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. 

Model Explanation 

 WSP □ - □/□-□╳□
    W:  off-circuit
    S :  three-phase or D for single phase
    P :  round 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

Samples 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)

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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