Product Specifications
| Prod Model: |
ZW8-12 (G) |
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Arc-extinguishing Medium: |
Vacuum |
| Breaking Capacity: |
High Voltage Circuit Breakers |
| Operation: |
Electric Type |
| Installation: |
Fixed |
| Speed: |
Normal Type Circuit Breaker |
| Structure: |
Conventional Circuit Breaker |
Product Description
ZW8-12 (G)-serial vacuum circuit breaker is rated voltage 12KV, three-phase AC 50Hz outdoor high voltage switchgear is mainly used to breaking Closing Rural power network, city network and small power system load current, overload current, short-circuit current. The product of the overall structure is box-type three-phase, three-phase vacuum interrupter placed in metal boxes, using SMC insulation material and inter-phase insulation and ground insulation, reliable performance, high dielectric strength.
ZW8-12G is ZW8-12 a composite by circuit breaker and isolating switch, called the combination of circuit breakers, use for disconnect switches
This series of operating mechanism for the CT23-type spring operating mechanism energy storage can be divided into two kinds of electric and manual.
| No | Item | Unit | Data |
| 6.3kA | 12.5kA | 20kA |
| 1 | Rated voltage | kA | 6.3 | 12 | 20 |
| 2 | Rated current | A | 16 | 630(1250) | 50 |
| 3 | Rated short-circuit breaking current | kA | 16 | 12.5 | 50 |
| 4 | Rated short circuit closed current (peak) | kA | 6.3 | 31.5 | 20 |
| 5 | Rated peak withstand current | kA | | 31.5 | |
| 6 | Rated short-circuit withstand current | kA | | 12.5 | |
| 7 | Rated insulation level | power frequency withstand voltages (dry) | | 42 |
| Lightning impulse withstand voltage (peak) | 75 |
| 8 | Rated operating sequence | | O-0.3s-CO-180s-CO |
| 9 | Mechanical life | times | 1000 |
| 10 | Rated short-circuit breaking current breaking times | times | 20 |
| 11 | Rated closing voltage of operation mechanism | V | 110,220 |
| 12 | Rated opening voltage of operation mechanism | V | 110,220 |
| 13 | Contact distance | mm | 11±1 |
| 14 | Over stroke (compression length of contact spring) | mm | 3 (+1,-0.3) |
| 15 | Three phase closing and opening non-synchronism | ms | ≤2 |
| 16 | Contact closing bounce duration | ms | ≤2 |
| 17 | Average opening speed | m/s | 1.0±0.2 |
| 18 | Average closing speed | m/s | 0.7±0.15 |
| 19 | Opening time | m/s | 15-50 |
| 20 | Closing time | m/s | 25-50 |
| 21 | Resistance of main loop for each phase | µΩ | ≤0.06 |
| 22 | Permitted accumulate wear-thickness of dynamic and static contact | mm | ≤200 |
GHORIT Electric Equipment Co. Ltd. Zhejiang established in 2000, is a large-scale high and new-tech enterprise specialized in researching, developing, producing, marketing and servicing. The leading products include vacuum circuit breaker, High voltage and Medium Frequency Capacitor, high voltage load disconnecting switches and other high & low voltage electrical component. The enterprise has Shanghai and Zhejiang two production base, take up 26000 square meter, and more than 200 staff, fixed assets 60 million, annul sales turnover up to 1 billion.
Ghorit has passed the ISO9001 Quality Management System Certification, CCC and European Economic Community product Safe Qualified Symbol CE. The enterprise own advance production line and test line for circuit breaker and other various advance production and test facilities about 60 sets, make sure all technical data keep on database from begin produce to leaving-factory. Establish advance ERP network management system and computer-aided design system. With rich technical research and development strength, advanced production check-out facility, exquisite production workmanship, we win confidence by our customer. Ghorit is award star enterprise, advance enterprise, the top 100 enterprise of tax and etc.
On the concept of "professional, innovation", the enterprise has a united, high specialized quality, skilled and management team. The enterprise purpose is " our work standard and pursuit is meet the customers demand and expectation" with first-class management, first-class technology, first-class facilities, first-class staff, which assure Ghorit become you best cooperation partner.
