Audited Supplier
Introducing the ZW32-12 Outdoor High Voltage Vacuum Circuit Breaker, a masterwork of engineering within the realm of outdoor distribution switchgear. Known as the 'circuit breaker,' this device is specifically designed for a rated voltage of 12kV, underpinned by a solid three-phase AC with a frequency of 50Hz. This adaptable circuit breaker excels in managing the interruption and connection of load current, overload current, and short circuit current seamlessly within the power grid. Its state-of-the-art overload and short circuit protective capabilities not only meet but surpass control and measurement standards. Equipped with advanced remote control and monitoring functionalities, it spans a broad range of applications including substations, industrial settings, and mining distribution systems. This makes it the ideal choice for environments characterized by frequent operations, offering unmatched control, efficiency, and reliability.
Structural features:
Precision-crafted, the circuit breaker features an innovative three-phase pillar dry design;
With a fully enclosed structure, it provides unmatched sealing, superior moisture resistance, and excellent anti-condensation characteristics, making it the optimal choice for high-temperature and humid conditions;
Incorporates cutting-edge vacuum arc extinguishing technology to ensure exceptional insulation reliability;
Ensures impeccable opening and closing performance, guaranteeing safety by eliminating any risk of combustion or explosion;
Designed to be compact, lightweight, maintenance-free, and boasting a remarkable lifespan;
Offers flexibility with manual, electric, or remote control options available for diverse operational needs;
The operating mechanism is expertly sealed at the base of the switch box, providing robust protection against environmental corrosion encountered outdoors;
Features a novel, minimalist design with a dynamic restless mechanism that promises reliable performance, a compact form, and an impressive service life of up to 10,000 cycles.
Main technical parameters:
No | Name | Unit | Data | |||
1 | Rated voltage | kV | 12 | |||
2 | Rated current | A | 630 | 1250 | ||
3 | Rated frequency | Hz | 50 | |||
4 | Rated insulation level | 1min power frequency withstand voltage | Dry test | / | 42/48(fracture) | |
Wet test | 34 | |||||
Secondary circuit to ground | 2 | |||||
Lightning impulse withstand voltage (peak value) | 75/85(fracture) | |||||
5 | Rated short circuit making current (peak value) | kA | 50 | 63 | ||
6 | Rated short time withstand current | kA | 20 | 25 | ||
7 | Rated peak withstand current | kA | 50 | 63 | ||
8 | Breaking times of rated short circuit breaking current | Times | 30 | |||
9 | Rated short circuit duration | s | 4 | |||
10 | Rated operating voltage and rated voltage of auxiliary circuit | V | DC220,AC220 ,AC/DC220 | |||
11 | Rated operation sequence | / | Off-0.3s-on-off-180s-on-off | |||
12 | Rated current of over current trip | A | 5 | |||
13 | Mechanical life | second | 10000 | |||
14 | Allowable wear accumulative thickness of moving and static contacts | mm | 3 | |||
15 | Rated current of over current release | A | 5 | |||
16 | Current ratio of current transformer | / | 200/5 400/5 600/5 | |||
17 | Contact opening distance | mm | 9±1 | |||
18 | Contact overtravel | mm | 2±0.5 | |||
19 | Average opening speed | m/s | 1.2±0.3 | |||
20 | Average closing speed | m/s | 0.6±0.2 | |||
21 | Opening time | ms | ≤40 | |||
22 | Closing time | ms | 20~45 | |||
23 | Closing bounce time | ms | ≤2 | |||
24 | Asynchrony of three phase closing and opening | mm | ≤2 | |||
25 | Three phase circuit resistance | μΩ | ≤80 Band isolation≤120 | |||
