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Location: >> Products >> Electrical products >> ProductsZN85B-40.5, ZN23 (39) AC indoor side-mounted HV vacuum circuit breaker
General
ZN85B-40.5 indoor HV AC vacuum circuit breaker is the up-down structure, the main circuit applies the composite insulation mode, which effectively reduces the depth and volume. It applies the new spring operating mechanism, maintenance free about 10000 operations, safe. Screw feed mechanism. The ZN85-B-40.5 mainly matches the AC metal-enclosed Switchgear.
Technical parameters
|
Item |
Unit |
Parameters |
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|
Rated voltage |
KV |
40.5 |
|||
|
Rated insulation |
1min power frequency withstand voltage |
KV |
95 |
||
|
Lightning impulse withstand voltage |
KV |
185 |
|||
|
Rated frequency |
HZ |
50/60 |
|||
|
Rated current |
A |
1250、1600、2000 |
|||
|
Rated short time withstand voltage (4S) |
KA |
20 |
25 |
31.5 |
|
|
Rated withstand current (peak) |
KA |
50 |
63 |
80 |
|
|
Rated short circuit drop-out current |
KA |
20 |
25 |
31.5 |
|
|
Rated short circuit making current |
KA |
50 |
63 |
80 |
|
|
Rated operation sequence |
|
O-0.3S-CO-180S-CO |
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Rated short circuit drop-out current and numbers |
numbers |
20 |
|||
|
Rated capacitor bank drop-out current |
A |
630 |
|||
|
Mechanical endurance |
numbers |
10000 |
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