ZN63A-12(VS1) (12kV), Indoor Type
Application: in 12kV power distribution system for control and protection.
Standards: IEC 62271-100
Parameters: Rated voltage: 12kV.
Rated current: 630-5000A.
Rated short-circuit breaking current: 20-50kA.
Features: 1.Advanced arc-extinguishing mode adopted.
2.High insulation level and peak withstand current capacity.
3.Impact and vibration reduced, Less maintenance.
4.Mechanical endurance up to 20,000 times.
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protection of circuits against short-circuit currents,protection of circuits against overload currents,switch,isolation.
1.2 Selection
Technical data of the network at the point considered:the earthing systems (TNS, TNC),short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,network normal voltage.
Tripping curves:
B curve (3-5In)
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Electromagnetic release type: B, C, D;
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protection of circuits against short-circuit currents,protection of circuits against overload currents,switch,isolation.
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Technical data of the network at the point considered:the earthing systems (TNS, TNC),
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