JCZR 7.2kv 12kv Indoor Vacuum Contactor-Fuse Combination Electric Appliance

This combination electric appliance may install in the switch cabinet to form the F-C loop, use with the integrated protection device. It is used for loading of the switching on and switching off the power pant as well as the industry and mining enterprise, dropout AC high-tension motor, the transformer, capacitor and so on, and it has overload, short circuit protection function. This combination electric appliance may use in AC 50 HZ three-phase power systems. Technical Data: 1.Main Technical Parameter see Table 1. Rated voltage: 7.2 kv / 12 kv Power frequency withstand voltage phase to phase, to earth: 32 kv / 42 kv Power frequency withstand voltage the fracture impact withstand voltage(fracture): 60 kv / 75 kv Fuse rated current A: 25-250 / 25-250 Prospective short circuit breaking current KA: 50 / 50 Prospective short circuit making current(peak value) KA: 130 / 130 Prospective short circuit withstand current( peak value) KA: 10 / 10 Rated short time withstand current( effective value) KA: 4 / 4 Rated short circuit duration S: 4 / 4 Rated making current KA: 4 / 4 Rated breaking current KA: 3.2 / 3.2 Limit breaking current KA: 4.5 / 4.5 Contactor distance between fixed and moving contact mm: 4.5 / 5 Contactor over-travel mm: 1.5 / 1.5 Mechanical life times: Model J:100,000; Model D:300,000 / Model J:100,000; Model D:300,000 Closing coil Rated operation voltage(V): DC220,DC110 Opening coil Rated operation voltage(V): DC220,DC110 Holding coil Rated operation voltage(V): DC220,DC110 Closing coil power: 1200 W Holding coil power: 15 W Opening coil power: 80 W Closing coil Normal work voltage range: 85%-110% rated voltage Holding coil Normal work voltage range: 85%-110% rated voltage Opening coil Normal work voltage range: 60%-120% rated voltage