IS 8980 : 1978 General purpose push-pull single-pole circuit breakers for aircraft

1 Scope

1.1 This standard specifies the performance requirement for push-pullsingle-pole, trip-free circuit-breakers having an inverse time/currentcharacteristic of normal rating up to and including 35 A for use in nominal 28 Vdc or 115 V ac single-phase 400 Hz line-to-neutral circuit or suitable for bothac and dc circuit.

Note - If the circuit-breaker is required for use for 200 V ac line-to-linecircuit, tests outside the scope of this standard may be necessary.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 7855 :1975Form of declaration of performance ofaircraft electrical equipment

IS 8852 :1978Dimensions for general purpose push-pullsingle-pole circuit-breakers for aircraft

IS 8252 : Part XVIII :1978 Environmental tests for aircraft equipment :Part XVIII Magnetic influence