Introduction
ZW27F-12 series AC high voltage demarcation vacuum circuit breaker(watchdog) is the distribution equipment for the rated voltage 12KV, AC 50Hz circuit.
Installed in the duty demarcation place of overhead distribution nets, front of users' inlet wire.
Can automatically switch-off failure of single-phase wiring to ground and short-circuit between phases.
Avoid the failure affecting the distribution net to ensure electrical security of normal users.
Features
1. Automatically lock short-circuit between phases
When Short-circuit between phases happens in the Users‘ branch lines, demarcation circuit breaker acts before substations protection, instant breaking and locking.
2. Automatically switch-off failure of single-phase wiring ground
When single phase wiring ground failure happens in the Users' branch lines, demarcation circuit breaker automatically breaks before substations protection.
3. Fast location the error point
4. Circuit breaker function
Specification
Outline and mounting dimension
Packing and shipping
-- Ordinary paper carton for products.
-- Shipping mark according to customer's request.
-- Bulk production will be deliveried by sea and air.
ZW27F-12 series AC high voltage demarcation vacuum circuit breaker(watchdog) is the distribution equipment for the rated voltage 12KV, AC 50Hz circuit.
Installed in the duty demarcation place of overhead distribution nets, front of users' inlet wire.
Can automatically switch-off failure of single-phase wiring to ground and short-circuit between phases.
Avoid the failure affecting the distribution net to ensure electrical security of normal users.
Features
1. Automatically lock short-circuit between phases
When Short-circuit between phases happens in the Users‘ branch lines, demarcation circuit breaker acts before substations protection, instant breaking and locking.
2. Automatically switch-off failure of single-phase wiring ground
When single phase wiring ground failure happens in the Users' branch lines, demarcation circuit breaker automatically breaks before substations protection.
3. Fast location the error point
4. Circuit breaker function
Specification
| Rated Voltage | 12KV | |
| Power frequency withstand voltage(1min) | phase, to ground(wet/dry) | 34KV, 42KV |
| fracture | 48KV | |
| Lightning impulse withstand voltage | phase, to ground | 75KV |
| fracture | 85KV | |
| Rated current | 630A, 1000A | |
| Rated Frequency | 50HZ | |
| Rated short-circuit current making & breaking times | 30 times | |
| Rated short-circuit making current(peak) | 50KA, 63KA | |
| Rated short-time withstand current(4s) | 20KA, 25KA | |
| Rated short-circuit breaking current | 20KA, 25KA | |
| Rated withstand current(peak) | 50KA, 63KA | |
| Rated operating order | O-0.3s-CO-180s-CO | |
| Mechanical life | 10000 times | |
| Rated current breaking times | 10000 times | |
| Open Contacts clearance | 9+1-0.5 mm | |
| Contact travel | 3+1-0.5 mm | |
| Secondary circuit power frequency withstand voltage(1min) | 2KV | |
| Rated operating voltage and auxiauxiliary circuit rated voltage | AC/DC 220V | |
| Overcurrent tripper rated current | 5A | |
| Average breaking speed | 1.2±0.2 m/s | |
| Average closing speed | 0.6±0.2 m/s | |
| SF6 gas rated pressure | 0 Mpa | |
Outline and mounting dimension
-- Ordinary paper carton for products.
-- Shipping mark according to customer's request.
-- Bulk production will be deliveried by sea and air.
Our Service
-- We have our own factory, professional manufacturer
-- We do OEM & ODM services .
-- We control quality strictly, quality problem: 100% compensation or change
Welcome to visit our factory. Welcome customer or your agent to inspect before order and before lading.
-- We have our own factory, professional manufacturer
-- We do OEM & ODM services .
-- We control quality strictly, quality problem: 100% compensation or change
Welcome to visit our factory. Welcome customer or your agent to inspect before order and before lading.