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HMS Series

Medium Voltage Switchgear

Rated Voltage: Up to 36 KV
Rated frequency: 50/60 HZ
Rated short-duration power-frequency withstand
voltage: Up to 38 KV (up to 17.5 KV), 50 KV (24 KV), 70 KV (36 KV)
Rated lightning impulse withstand voltage : Up to 95 KA (up to 17.5 KV), 125 KV (24 KV), 170 KV (36 KV)
Rated short-time withstand current, 3 s: 50 KA (up to 17.5 KV), 25 KA (24 KV), 31.5 KA (36 KV)
Rated peak withstand current at 50/60 Hz: 130 KA (up to 17.5 KV), 65 KA (24 KV), 82 KA (36 KV)
Rated short-circuit breaking current: 50 KA (up to 17.5 KV), 25 KA (24 KV), 31.5 KA (36 KV)
Rated normal current of busbar: 4000 A (up to 17.5 KV), 3150 A (24 KV), 3150 A (36 KV)
Rated normal current of feeders
- With circuit-breaker : 4000 A (up to 17.5 KV), 3150 A (24 KV), 3150 A (36 KV)
- With vacuum contactor : 400 A (up to 12 KV)
Type of Switchgear : Metal Enclosed (Fix & Draw out)
Classification of switchgear is according to: IEC 62271-200

 

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