The vacuum interrupter use the wave ceramic as insulating shell, the contact material is CuCr alloy, the longitudinal magnetic field cup structure, with high breaking capacity, high insulation level, strong arc extinguishing ability, long life, small size and easy maintenance, No explosion risk, no pollution, low noise and so on.
Main technical parameter
Value
Rated voltage
3.6kV
Rated current
1250A
Rated frequency
50Hz
Rated short-time power frequency withstand voltage (1 min)
25kV
Rated lightning impulse withstand voltage
40 kV
Rated making current
10 kA
Rated switching current
10 kA
Limit switching current
8.0 kA
Limiting abrasion of contacts
3mm
Mechanical life
1000000times
Electrical endurance AC-4
250000 times
Closing force due to bellows and atmosphere
80±20N
Force required to hold contacts opening at full stroke
150±30N
Circuit resistance at lowest rated contacts force
≤50μΩ
Weight of movable parts
≤0.5kg
Storage life
20 years
Mechanical Requirements Of Vacuum Circuit Breaker
MECHANICAL DATA RQUIRED FOR THE MATCHEDVACUUM SWITCHGEAR
