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 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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