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Off load tap changer

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Product Description
  This series is used in 50Hz or 60Hz oil immersed transformers with rated voltage 10kV-30kV.When voltage is to change,transformer must be cut off from the grid.At no excitation state,transformer primary winding number is changed through tap changer;therefore,secondary voltage is changed accordingly.
 
 

Phase

Three phases\single phase

Connect type

Change voltage at middle (Ⅱ), at neutral point(Ⅲ), at terminal(Ⅰ), Y-△, series or parallel connected

Max. rated current(A)

30

63

125

250

400

500

Short-circuit test current(KA)

Thermal stability(3S)

0.7

1.6

2.5

5

 

 

Dynamic stability (peak)

1.8

4

6.25

12.5

 

 

Rated frequency(Hz)

50~60

Max. working position number

7

Rated insulation(KV)

Max. voltage Um

12KV

23KV

40.5KV

Rated power frequency withstand voltage
(50Hz/1min)

42KV

55KV

95KV

Rated impulse withstand voltage
(1.2/50μs)

75KV

125KV

200KV

Working pressure(Mpa)

0.25

Mechanical service life(thousand times)

2

Scope

Oil-immersed transformers

Corresponding parameter set not found, please add it in property template of background
暂未实现,敬请期待
暂未实现,敬请期待
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