INTEGRATED HIGH-VOLTAGE ALTERNATING-CURRENT CIRCUIT-BREAKER AND PROTECTIVE CIRCUIT OPERATING METHOD THEREFOR

摘要

An integrated high-voltage alternating-current circuit breaker and a protective circuit operating method therefor. The integrated high-voltage alternating-current circuit breaker comprises a circuit breaker body (1), wherein vacuum switch tubes (4) connected to various phase loops in series and an operation assembly (11) for controlling the switching-off and switching-on of the vacuum switch tubes (4) are arranged in the circuit breaker body (1), wherein the operation assembly (11) comprises a switching-off circuit, a switching-on circuit and a drive mechanism for driving a moving contact of each of the vacuum switch tubes (4) to move, a body controller (3) is also arranged in the circuit breaker body, the body controller (3) is provided with a microprocessor circuit (23), and an electromagnetic shielding device is arranged outside the body controller (3). The operation assembly (11) is connected to the body controller (3) and controls the vacuum switch tubes to be switched off/on according to a switching-on/switching-off signal instruction sent by the microprocessor circuit (23). The circuit breaker has the advantages of having a high degree of intelligentization and a high degree of integration, and being reliable in operation and convenient to maintain, thereby being applicable to an intelligent metal closed alternating-current switch device and a control device.