Timetric Electric's ZW32 vacuum circuit breaker demarcation switch main uses

Installation location

ZW32 vacuum circuit breaker boundary switches are usually installed on outdoor utility poles, so they are also called watchdog vacuum circuit breakers.

Purpose

Timetric Electric ZW32 circuit breakers are used in three-phase power systems with a rated voltage of 12kV and have the following functions:

1. Switching load current: It can effectively control and cut off the load current during normal operation.

2. Handling overload current: When the current exceeds the rated value of the equipment, the ZW32 circuit breaker can handle it accordingly to prevent damage to the equipment and lines.

3. Dealing with short-circuit current: When a short-circuit fault occurs, the ZW32 circuit breaker can quickly cut off the current and protect the system from serious damage.

Intelligent functions

Timetric Electric ZW32 circuit breakers can be configured with a reclosing controller and have the following intelligent functions:

1. Identify current characteristics: By identifying the changing characteristics of the current, the ZW32 circuit breaker can judge the abnormal situation of the current.

2. Automatic reclosing: In certain fault conditions, the ZW32 circuit breaker can achieve multiple automatic reclosing attempts to restore power supply.

3. Isolate permanent faults: For permanent faults that cannot be repaired, the ZW32 circuit breaker can isolate them to ensure the safe operation of other parts of the system.

Power supply and protection

The Timetric Electric ZW32 circuit breaker also has its own PT (voltage transformer) as a power supply, with voltage and current signal output and control functions. With the power provided by the electronic PT, the ZW32 circuit breaker can complete the following protection functions:

1. Overcurrent delay: When the current exceeds the set value, the ZW32 circuit breaker will have a delayed operation to prevent unnecessary power outages caused by instantaneous overcurrent.

2. Inrush delay: When the current impact at startup is large, the ZW32 circuit breaker can adapt to the inrush current characteristics to avoid misoperation.

3. Short circuit quick break: When a short circuit occurs, the ZW32 circuit breaker can quickly cut off the current to protect the system safety.

Summary

Timetric Electric ZW32 vacuum circuit breaker demarcation switch (watchdog vacuum circuit breaker) is mainly used in 12kV three-phase power systems to ensure the safe operation of the power system by switching on and off load currents, handling overload and short-circuit currents, etc. Its intelligent configuration and multiple protection functions make it a reliable power equipment management tool on outdoor power poles.