Application:

Connection:

Oil immersed power,rectification and furnace 

transformers
Three-phase for neutral point of star contention 
Single-phase for any selectable winding position

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General type

Multiple coarse 
& fine Regulation

Max. rated through current
Three phases:
Single phase:

600A
1500A

600A 
1500A

Max. rated step voltage:

3300V

3300V

Max. rated switching capacity
Three phases:
Single phase:

1500kVA
3500kVA

1500kVA
3500kVA

Highest voltage for equipmentUm:

252kV

126kV

Max. operating positions
Without change-over selector:
With change-over selector:

18
35

With multiple

coarse selector
107