1250A Ladle furnace switchgear with simens vacuum circuit breaker 3AH4

Reated Voltage: 40.5 KV,

Operating Voltage: 33 KV,

Rated Current Of BusBar:1250 A,

Rated Power Frequency OfWithstand Voltage:85 KV,

Rated Lighting Impulse Voltage:185 KV,

Rated Short Time Current:31.5 KA - 1 Second,

Rated Peak WithstandCureent:80 KA,

Rated Frequency: 50 HZ,

Control Voltage: 230 Vac,

Auxilliary Voltage: 230Vac

The vacuum circuit-breaker type 3AH4 up to 36 kV is

designed for extremely high numbers of operating cycles:

It controls 60,000 / 120,000 operating cycles.

Minimum maintenance work, such as greasing of operating

mechanisms after 10,000 operating cycles and replacement

of vacuum interrupters after 30,000 operating cycles,

preserves the reliability of these circuit-breakers throughout

their entire service life – despite high mechanical stress.

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