Description
Description of ZW8-12F Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker
The ZW8-12F Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker is a cutting-edge electrical switching and protection device tailored for three-phase power systems with AC 50Hz frequency and 10-12KV voltage levels. Engineered to deliver reliable switching and breaking of load currents, this intelligent circuit breaker integrates a comprehensive suite of protection and control functions, making it a cornerstone component in medium-voltage power distribution networks.
Beyond core overload and short-circuit protection, it features instantaneous trip protection, definite-time delay protection, and automatic reclosing capabilities, ensuring rapid response to electrical faults and minimizing disruptions to the power supply. Equipped with a built-in power supply, it supports local remote control operations, while reserved CT (Current Transformer) and PT (Potential Transformer) interfaces fulfill telemetry requirements for intelligent monitoring and management. For enhanced versatility, it can be optionally configured with surge arresters or disconnectors, forming a combined intelligent circuit breaker to meet diverse project needs.
Parameter of ZW8-12F Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker
| name | unit | parameter | ||
| rated voltage | KV | 12 | ||
| rated insulation level | 1-minute power frequency withstand voltage | dry-type | 42 | |
| wet-type | 34 | |||
| lightning impulse withstand voltage (peak) | 75 | |||
| rated current | A | 630、400、200 | ||
| rated short-circuit breaking current | KA | 20、16、12.5 | ||
| rated operating sequence | Split-0.3s-Merge Split-180s-Merge Split | |||
| rated short-circuit breaking current count | time | 30 | ||
| rated short-circuit closing current (peak) | kA | |||
| rated peak current rating | 50 | |||
| rated short-time current | 20 | |||
| rated short circuit breaking duration | S | 4 | ||
| Tripping time (de-energized trip) | maximum operating voltage | ms | 15~50 | |
| rated operational voltage | 15~50 | |||
| minimum operating voltage | 30~60 | |||
| closing time | 25~50 | |||
| full open time | ≤100 | |||
| arc time | ≤20 | |||
| mechanical life | time | 10000 | ||
| closing power | J | 70 | ||
| rated input power of the energy storage motor | W | ≤220 | ||
| rated operating voltage and auxiliary circuit rated voltage | V | DC220 110 24 | ||
| AC220 110 24 | ||||
| energy storage time at rated voltage | S | <8 | ||
| overcurrent trip unit | rated current | A | 5 | |
| trip current accuracy | % | ±10 | ||
| overcurrent regulation | A | 1~9 | ||
| fast-acting regulation | ms | 6~20 | ||
| delay time | 80~500 | |||
| Remote control distance | m | 30 | ||
| Repetition count | Next | 1~3 | ||
Feature of ZW8-12F Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker
The ZW8-12F Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker boasts distinct advantages that cater to the demands of modern intelligent power distribution. Firstly, it offers comprehensive protection capabilities, including overload, short-circuit, instantaneous trip, and definite-time delay protection, combined with automatic reclosing functionality to quickly restore power supply after transient faults, reducing downtime and maintenance costs.
Secondly, its intelligent design supports local remote control via a built-in power supply, and CT/PT interfaces enable seamless integration with intelligent monitoring systems, realizing real-time telemetry and efficient operation management. Thirdly, it features flexible configuration options, allowing for the addition of surge arresters or disconnectors to form a combined breaker, adapting to diverse project requirements and harsh outdoor environments.
Fourthly, vacuum arc extinction technology ensures reliable breaking performance, low noise, and long service life, while the outdoor-specific enclosure provides excellent resistance to dust, moisture, and extreme temperatures. Additionally, it adopts a compact structure for easy installation and maintenance, balancing high performance with practicality for outdoor high-voltage power protection.
