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HOME » Transformers » Dry Type Transformer » Off-circuit Three Phase Linear Tap Changer

Off-circuit Three Phase Linear Tap Changer

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-Used in mineral oil or silicon oil
-Rated voltage 10KV-35KV
-Rated current from 63A-300A
-Tapping position:3-9
-Regulation 2.5% per position

Specifications

WST30

Phase number

Three-phases

Connection mode

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

Rated through current (A)

30

Short-circuit capacity

Heat stableness current (KA/2s)

0.7

Dynamic stableness current (KA)

1.8

Rated frequency

50~60

Insulation level (KV)

Rated voltage (KV)

10KV

Power-frequency withstand Voltage (50Hz/1min)

42KV

Impulse (1.2/50μs)

75KV

Sealing performance (KPa/24h)

60

Machine life (Thousands of times)

2

Ztelec Group