12KV, Embedded pole vacuum interrupterMain Technical Data
Please see the attachment.
Rated voltage: | 12KV | |
Rated current: | 1250/1600A | |
Rated frequency: | 50Hz | |
Rated back-to-back capacitor bank breaking current | 400A | |
Short-time(1min)power-frequency withstand voltage | 48KV | |
Rated short-circuit breaking current | 25/31.5KA | |
Rated short-circuit making current (peak): | 63/80KA | |
Rated Operations of short-circuit breaking current interruptionq: | 50 times | |
Rated short-time withstand current: | 31.5KA | |
Rated lightring impulse withstand voltage(peak) | 85KV | |
| part discharge | ≤5pc | |
Rate single capacitor bank breaking current: | 630A | |
Rated duration of short-circuit: | 4s | |
Mechanical life: | 20000times | |
Contact closing force due to bellows and atmosphere: | 100±30N | |
Counterforce at rated contact stroke: | 200±30N | |
Circuit resistance at rated contact force: | ≤20μΩ | |
Shelf life: | 20years | |
Contact erosion limit: | 3mm | |
Rate oprating sequence | O-0.3s-CO-180s-CO | |
MECHANICAL DATA OF CIRCUIT-BREAKER EQUIPPED WITH THE INTERRUPTERS | ||
Rated contact stroke | 9±1mm | |
Average opening speed: | 1.1±0.2m/s | |
Average closing speed: | 0.7±0.2m/s | |
Added contact force: | 2500/3150±200N | |
Bounce duration of contact closing | ≤2ms | |
Out of simultaneity of contact closing and opening | ≤1ms | |
Max overtravel | ≤2mm | |
Note:Rated characteristics can be customised on requirment
