The ZW32 series outdoor high voltage vacuum circuit breakers independently developed by Lugao mainly consist of integrated solid-sealed contacts, current transformers, operating mechanisms and enclosures. This type of circuit breaker is designed for miniaturization, and the outer shell is made of high-quality steel. The current transformers can be selected according to the user's needs.
The ZW32 series outdoor high-voltage vacuum circuit breakers feature a uniquely designed, integrated, sealed pole and a highly reliable operating mechanism. These devices are primarily used in medium-voltage overhead power lines to detect load current, overload current, and short-circuit current. Combined with a matching intelligent control system, they can operate the circuit breakers locally or remotely via a communication interface. Other circuit breaker information can also be transmitted to a control center via communication channels such as cable, fiber optic, GPRS/CDMA, and GSM.
• Ambient air temperature: -30°C to +60°C;
• Altitude: no more than 3000m;
• Wind speed: no more than 34m/s;
• Vibration or ground motion from the external parts of switchgear and control equipment can be ignored;
• Pollution grade: Grade IV;
• Storage temperature: -40°C to +85°C.
• Extremely high reliability
• Completely maintenance-free throughout the entire lifespan
• Possesses high mechanical and electrical lifetimes
• Compact in size and lightweight, facilitating installation
No. | Parameter Name | Unit | Value | |
1 | Rated voltage | kV | 12、24、36 | |
2 | Rated current | A | 630、 1250 | |
3 | Rated frequency | Hz | 50 | |
4 | Rated circuit-breaker breaking current | kA | 20 | 25 |
5 | Rated short-circuit making current (peak) | kA | 50 | 63 |
6 | Rated peak withstand current | kA | 50 | 63 |
7 | 4s thermal stability current | kA | 20 | 25 |
8 | Control circuit and auxiliary circuit, power frequency withstand voltage for 1 minute | V | 2000 | |
9 | Rated operating voltage and auxiliary voltage | AC/DC220、 DC110/48/24 |