Vacuum Interrupter JUCA-40.5, 38KV 800A 20KA (JUCA-61179A) for circuit breaker from JUCRO EleCTric
Main technical parameters |
Items | Value | Rated voltage | 40.5kV | Rated current | 800A | Rated frequency | 50/60Hz | Rated short circuit breaking current | 20KA | Breaking operations under rated short circuit breaking current | 30 times | Rated short circuit making current(peak value) | 50KA | Rated withstand current(peak value) | 50kA | Rated short time withstand curren | 20kA | 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) | *85/95kV | Rated lightning impulse withstand voltage | *185kV | Circuit resistance at lowest rated contacts force | ≤25μΩ | Mechanical life | 10000 times | Closing force due to bellows and atmosphere | 100±30N | Force required to hold contacts opening at full stroke | 200±30N | Rated duration of short circuit | 4s | Limiting abrasion of contacts | 3mm | Storage life | 20 years | Moving mass of interruPTer | 0.62kg | Rated operating sequence | O-0.3s-CO-180s-CO |
|
|
Model No.: JUCA-40.5, 38/800-20(JUCA-61179A) Mechanical requiements of vacuum circuit breaker |
Items | Value | Clearance between opening contacts | 14±0.5mm | Contact connection stroke | 4±1mm | Average opening speed | 1.6±0.2 m/s | Average closing speed | 0.8±0.2 m/s | Rated contacts pressure | 1800±200N | Contacts bouncing duration at closing operation | ≤3ms | Contacts re-bouncing clearance at opening operation | ≤1mm | Synchronism of three phases | ≤2ms |
|
|
Note:
# Must contact with JUCRO.
* Need insulation cover.