Vacuum Interrupter JUCA-40.5KV 1600A 31.5KA (JUC632) for circuit breaker from JUCRO EleCTric
Main technical parameters |
Items | Value | Rated voltage | 40.5kV | Rated current | 1600A | Rated frequency | 50Hz | Rated power frequency withstand voltage (1 min) | 95kV | Rated lightning impulse withstand voltage | 185kV | Rated short circuit breaking current | 31.5KA | Rated short circuit making current(peak value) | 80KA | Breaking operations under rated short circuit breaking current | 30 times | Rated short time withstand current | 31.5kA | Rated withstand current(peak value) | 80kA | Rated duration of short circuit | 4s | Mechanical life | 10000 times | Closing force due to bellows and atmosphere | 200±60N | Force required to hold contacts opening at full stroke | 300±60N | Circuit resistance at lowest rated contacts force | ≤20μΩ | Storage life | 20 years | Limiting abrasion of contacts | 3mm |
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Model No.: JUCA-40.5/1600-31.5(JUC632) Mechanical requiements of vacuum circuit breaker |
Items | Value | Clearance between opening contacts | 20±2mm | Average opening speed | 2.0±0.2 m/s | Average closing speed | 0.75±0.2 m/s | Rated contacts pressure | 3600±300N | Contacts bouncing duration at closing operation | ≤3ms | Contacts re-bouncing clearance at opening operation | ≤3mm | Synchronism of three phases | ≤2ms |
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