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Transformer accessories

Off-circuit Three Phase Linear Tap Changer

Off-circuit Three Phase Linear Tap Changer

Transmission And Distribution Series,Off-circuit Three Phase Linear Tap Changer.


Off-circuit Three Phase Linear Tap Changer
-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


Paremeter
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

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