Universal circuit breaker controller

Universal circuit breaker controller is a very safe circuit breaker that is used in many circuits, which can ensure the safety of the circuit and our personal safety

The universal circuit breaker controller has controllability in mechanism action time. Currently, the commonly used pneumatic operating mechanism, hydraulic operating mechanism, and spring operating mechanism of circuit breakers have large control time dispersion due to factors such as intermediate conversion medium, and their motion characteristics are difficult to achieve ideal controllability. Circuit breakers with electromagnetic operating mechanisms utilize technologies such as capacitor energy storage, permanent magnet retention, electromagnetic drive, and electronic control. Once the mechanism is determined, there is only one moving component without an intermediate conversion medium, and the opening and closing characteristics are only related to coil parameters. Microsecond level control can be achieved through microelectronics technology, and intelligent operation of the circuit breaker can be achieved through speed characteristic control.

1. Working principle of universal circuit breaker controller

The basic working mode is to automatically select the operating mechanism and arc extinguishing chamber according to the different fault currents detected, and pre-set working conditions, such as opening at a lower speed when the normal operating current is low, and opening at a higher speed when the system short-circuit current is high, in order to achieve the opening effect in terms of electrical and mechanical performance.

2. Working process

When a system fault occurs and the relay protection device sends a disconnection signal or the operator sends an operation signal, the intelligent recognition module is first activated to determine the current working conditions of the circuit breaker. Different quantitative control information is sent to the regulating device to automatically adjust the parameters of the operating mechanism, in order to obtain motion characteristics that are suitable for the current system working state, and then the circuit breaker is activated.

3. Function

Intelligent circuit breakers are used to control and protect low-voltage distribution networks. Generally installed in low-voltage distribution circuit breaker cabinets as the main switch for overall protection.

4. Usage environment

(1) The ambient air temperature is between -5 ° C and+40 ° C, and the average value over 24 hours does not exceed+35 ° C;

(2) The altitude of the installation site shall not exceed 2000m;

(3) The relative humidity of the air shall not exceed 50% at a maximum temperature of+40 ° C;

(4) At lower temperatures, there can be higher relative humidity, with the monthly average low temperature of the wettest month not exceeding+25 ° C, and the monthly average maximum relative humidity of that month not exceeding 90%, taking into account condensation occurring on the surface of the product due to temperature changes; The pollution level is level 3.