Thursday, August 30, 2007

HV Circuit Breaker rated up to 3150 Amps

The Sion vacuum circuit-breaker from Siemens is designed for use in
all common types of medium-voltage switchgear. A complete series of
models is available for rated voltages from 7.2 kV to 24 kV with a
short-circuit breaking current of up to 40 kA and rated currents up to 3150 A

Thanks to the ingenious use of insulating material, this
air-insulated circuit-breaker allows a much narrower construction
than is otherwise usual with air-insulated designs of
circuit-breaker. This makes smaller widths and depths possible than
with fully insulated circuit-breaker versions. The special partition
shell construction of the insulation materials also provides
mechanical support for the switching element.

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