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ZW7 Vacuum Circuit Breaker

ZW7 Vacuum Circuit Breaker is a kind of outdoor high-voltage switchgear under three-phase AC 50Hz, 36kv rated voltage and below. It can be used to switch on and off the loading, overloading and short-circuit current.

ZW7 Vacuum Circuit Breaker Description:
Type ZW7-36 outdoor high-voltage vacuum circuit breaker is a kind of outdoor high-voltage switchgear under three-phase AC 50Hz, 36kv rated voltage and below. It can be used to switch on and off the loading, overloading and short-circuit current.

ZW7 Vacuum Circuit Breaker

ZW7 Vacuum Circuit Breaker Features:
1. Storage, making and breaking by motor, It can operating by handle.
2. Breaking short-circuit current up to 25kA.
3. Mini motor spring mechanism (about 30W).
4. Installation method: adopt two type installation method.
5. Sealing performance: adopt reliable sealing technical.
6. Incoming & Outgoing method: adopt silicon bushing to make enough insulate distance.
7. Safe operating: there is an equipment to protect explosion.

W7 Vacuum Circuit Breaker Techincal data:

Item
Unit
Data
Rated voltage
KV
               36
Rated current
A
  1250,1600,2000
Rated short-circuit breaking current
KA
         20,25,31.5
Rated insulation level
Power frequency withstand voltage 
Dry
KV
               95
Wet
KV
               80
Lightning impulse withstand voltage (peak value)
KV
              185
Rated operating sequence
 
O-0.3s-CO-180s-CO
Rated  capacitor group breaking current
A
              400
Rated short-circuit breaking current
Time
               20
Rated peak withstand current
KA
         50,63,80
Rated short - time withstand current
KA
        20,25,31.5
Rated Short-circuit Continuing Time
S
                4
Machinery life
Time
            10000
Permissible gross wearing thickness  for dynamic/static contacts
mm
                3


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