China wholesale Oil Transformer - vacuum interrupter – Anhuang

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China wholesale Oil Transformer - vacuum interrupter – Anhuang
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The vacuum interrupter uses 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 12kV
Rated current 630A
Rated frequency 50Hz
Rated short-time power frequency withstand voltage (1 min) 42kV
Rated lightning impulse withstand voltage 75kV
Rated short-time withstand current 20KA
Rated duration of short-circuit 4 s
Rated peak withstand current 50KA
Rated short-circuit making current (peak) 50kA
Rated active load breaking current 630A
Rated closed-loop breaking current 630A
Rated cable-charing breaking current 10A
Rated breaking current of single capacitor bank 400A
Circuit resistance at lowest rated contact force ≤45μΩ
Closing force due to bellow and atmosphere 70±40N
Force required to hold contacts open at full storke 120±40N
Contacts limit erosion 3mm
Mechanical endurance 10000 times
Weight of movable parts ≤0.6kg
Storage life 20 years

Mechanical Requirements Of Vacuum Circuit Breaker

MECHANICAL DATA RQUIRED FOR THE MATCHEDVACUUM SWITCHGEAR Value
Clearance between opening contacts 8±1mm
Average opening speed 1.0±0.2 m/s
Average closing speed 0.6±0.2 m/s
Rated contacts pressure 900±500N
Contacts bouncing duration at closing operation ≤2ms
Synchronism of three phases ≤2ms
Contacts re-bouncing clearance at opening operation ≤3mm

 

Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at global@anhelec.com or use the following enquiry form. Our sales will contact you within 24 hours. Thank you for your interest in our products.