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ZN85-40.5 Indoor Vacuum Circuit Breaker

Item Unit Parameter
Altitude m ¡Ü 1000
Ambient Temperature C within the range of-10Cto +40C
Rated Voltage (as to Highest Voltage) kV 40.5
Rated Frequency Hz 50
Rated Current A 1250/1600/2000
Rated Short-time Withstand Current kA 20/25/31.5
Rated Peak Withstand Current kA 50/63/80
Rated Short-circuit Duration s 4
Rated Power Frequency Withstand Voltage kV 95
Rated Lightning Impulse Withstand Voltage kV 185
Rated Operating Sequence   O-0.3s-C O-180s-CO
Rated Breaking Current of Single Capacitor Bank A 630
Rated Breaking Current of Back-to-back Capacitor Bank A 400
Rated Current Breaking Times times 20
Mechanical Life times 10000
OperatorType   ZN85-40.5: 3AV3Special Spring Operator;
ZN23-40.5/ZN39-40.5: CD10IIElectromagnetic Operator or CT19N Spring Operator
ZN85-40.5 series indoor high-voltage vacuum circuit breaker is a kind of three-phase indoor high-voltage switchgear of rated voltage 40.5kV and AC 50Hz, equipped with a special 3AV3 spring structure. It can be configured in JYN1-40(Z) moving-off metal-enclosed switchgear, also can be configured in KYN61-40.5(Z) assembly type metal-closed switchgear to use. It is the best ideal circuit breaker of 40.5 kV device.