Vacuum Interrupter for Vacuum Circuit Breaker (ZKTD1250/12-31.5)

Rated voltage: 12kV
Rated current: 1250/1600A
Rated frequency: 50/60Hz
Rated short-time power frequency withstand voltage: 42KV
Rated lighting impulse withstand voltage(peak): 75KV
Rated short-circuit breaking current: 31.5KA
Rated short-circuit making current(peak): 80KA
Rated operation of short -circuit breaking current interruption: 30operations
Rated single capacitor bank breaking current: 630A
Rated back-to-back capacitor breaking current: 400A
Rated short-time withstand current: 31.5KA
Rated peak withstand current: 80KA
Rated duration of short-circuit: 4S
Mechanical life: 20000operations
Contact closing force due to bellows and atmosphere: 120± 50N
Counterforce at rated contact stroke: 190± 60N
Circuit resistance at rated contact force: ≤ 25μ Ω
Shelf life: 20years
Contact erosion limit: 3MM
Weight of moving parts: ≤ 1.5KG
Rated operation sequence: O-0.3s-180s-co