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Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Three Units Combined Linear Tap-changer

Three Units Combined L inear T ap-changer If a tap-changer is designed to operate with the transformer out of circuit condition which it is called off-load tap changer. In that Transformer line should be disconnected completely before changing the tap. If a Tap changer is designed to operate...

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Product Details

Three Units Combined Linear Tap-changer 

If a tap-changer is designed to operate with the transformer out of circuit condition which it is called off-load tap changer. In that Transformer line should be disconnected completely before changing the tap. If a Tap changer is designed to operate with the transformer in circuit then it is called as On-Load tap changer. Tap can be changed even when transformer will remains in line. This type of Tap changer is used for seasonal voltage variations as in Summers load on HT increases leads to drop in HT voltage so O/P can be increased by using Transformer Tap changer and in Winters when load get reduced HT voltage restores to normal levels then tap changer position can be done according to value of HT Voltage.

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

Samples Installation Dimension

Model No.

Install Dimension  (mm)

L

E

F

G

a

n

D

H

H1

H2

WSTⅡ5 400~50/10-4×3 ZH2

803

65

137

113

32

3

117

232

78

116

WSTⅡ5 400~50/10-6×5 ZH2

1050

65

137

113

32

5

172

232

78

116

WSTⅡ5 400~50/35-4×3 ZH2

1060

120

188

148

38

3

124

320

118

156

WSTⅡ5 400~50/35-6×5 ZH2

1362

120

188

148

38

5

198

320

118

156

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