Detailed Product Description
Product Name: Indoor Side-Installation Vacuum Circuit Breaker
Model Number: THV series
Place of Origin: China

THV series in-door side-installation vacuum circuit breaker is applied in power transmission
and distribution network, for connecting and disconnecting load AC, overload current, short circuit current. THV series of product is placed installation and symmetry distribution, with integrative vacuum terminal arranged end to end. It can achieve separating and gate closing operation by end to end pole connection and plumb insulated pole. The arc extinction installation put the out arc room into one using ethoxyline, with reliable insulation and compactness. Characteristics: 1) The vacuum arc room is small volume, and has high electrical insulation 2) With long mechanical endurance 3) It can be circulated on the bad environment 4) It is convenient to install, and can be applied together with the common disconnector and load switch, and can be installed on the left or on the right Normal ambient conditions: 1) Altitude: 鈮?,000m 2) Ambient temperature: -10 - +40掳C 3) Ambient relative humidity: value of day mean 鈮?5% value of month mean 鈮?0% 4) Saturated steam voltage: value of day mean 鈮?.2 x 10-3MPa, value of month mean 鈮?.8 x 10-3MPa 5) No frequency acute shock, fire, blast, heavily pollution, and chemical erode situation 6) The crake degree of earthquake cannot be above 8 Major technical parameters: 1) Rated voltage: 12kV 2) Rated current: 630A, 1250A 3) Rated frequency: 50Hz 4) Rated insulation level: a) Lightning impulse withstand voltage: 75 (between phases, to earth), 85 (across the isolation distance) b) 1min power-frequency withstand voltage: 42 (between phases, to earth), 48 (across the isolation distance) 5) Rated short-circuit breaking current: 25kA, 31.5kA 6) Rated short-circuit making current: 63kA, 80kA 7) 4S short-time withstand current: 25kA, 31.5kA 8) Breaking time of the rated short-circuit breaking current: 50 times 9) Breaking time: 鈮?.06s 10) Rated single capacitor bank breaking current: 630A 11) Rated back-to-back capacitor bank breaking current: 400A 12) Mechanical endurance: 30,000 times 13) Rated operating voltage: DC/AC 220V, 110V