Vacuum Interrupter JUCA-40.5KV 1600A, 1250A 25KA (JUCA-61177A) for circuit breaker from JUCRO EleCTric
Main technical parameters |
Items | Value | Rated voltage | 40.5kV | Rated current | 1600, 1250A | Rated frequency | 50/60Hz | Rated short circuit breaking current | 25KA | Breaking operations under rated short circuit breaking current | 30 times | Rated short circuit making current(peak value) | 63KA | Rated withstand current(peak value) | 63kA | Rated short time withstand current | 25kA | Rated breaking current of single capacitor bank | #630A | Rated breaking current of back to back capacitor bank | #400A | Rated power frequency withstand voltage (1 min) | *95kV | Rated lightning impulse withstand voltage | *185kV | Circuit resistance at lowest rated contacts force | ≤25μΩ | Mechanical life | 20000 times | Closing force due to bellows and atmosphere | 125±25N | Force required to hold contacts opening at full stroke | 210±25N | Rated duration of short circuit | 4s | Limiting abrasion of contacts | 3mm | Storage life | 20 years | Moving mass of interruPTer | 2.0kg | Rated operating sequence | O-0.3s-CO-180s-CO |
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Model No.: JUCA-40.5/1600, 1250-25(JUCA-61177A) Mechanical requiements of vacuum circuit breaker
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Items | Value | Clearance between opening contacts | 19±1mm | Contact connection stroke | 6±2mm | Average opening speed | 1.4-2.0 m/s | Average closing speed
| 0.8-1.2 m/s | Rated contacts pressure | 2400±300N | Contacts bouncing duration at closing operation | ≤5ms | Contacts re-bouncing clearance at opening operation | ≤2mm | Synchronism of three phases | ≤2ms |
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Note:
# Must contact with JUCRO.
* Need insulation cover.
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