An air blast circuit breaker is
usually employed for
Instantaneous voltage
Intermittent duty
Repeated duty
Short duty
Repeated duty
An
air blast circuit breaker is usually employed for repeated duty thus they are
applied in arc furnaces and in the traction systems.
Hence, the correct option is (C).
&Key Points:-
They
are used in range of 132 KV to 400 KV with breaking capacity upto 7000 MVA.
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