APGN666-9056-1

Circuit breakers are a critical component of the electrical power delivery system. APGN666-9056-1 is a particular type of circuit breaker designed for applications in power plants, defense, oil refinery, and chemical factories, among other. This article covers the application field and working principle of APGN666-9056-1.

Application Field

APGN666-9056-1 are mainly designed as the high voltage power circuit breaker for power plants, defense units, oil refinery, and chemical factories. It can also be applied to the circuit of industrial/commercial building. The rated voltage is 6.3/12/24 KV, and the short-circuit inductance current breaking capacity is up to 50KA. The breaker is mainly used to make, break, and protect the circuits.

Working Principle

The APGN666-9056-1 circuit breaker uses an electromagnetic braking detection and control-based system. The brake release and triggering are done using a electromagnetic mechanism. When a fault such as a short circuit or other over-current occurs, the electromagnetic device detects the force originating from the large current, and this activates the electromagnetic actuation device which turns the circuit off. The circuit breaker then stays in an "on" state until the fault is cleared and the normal power flow is restored.

The circuit breaker has a main and an auxiliary contact chamber separated by a vacuum interrupter. The main contact chamber consists of an arcing contact mounted on a conductive rod. The auxilary contact chamber is either an electromechanical contact system or an electromagnetic one controlled by a speed limiter. It also has a built-in time-delay relay, which can be adjusted to ensure the circuit breaker is switched on and off within the specified time.

Other features include a high-reliability motor-operated mechanism, an overload trip function, a temperature-sensitive function, an over-voltage trip function, and a surge protector.

In conclusion, the APGN666-9056-1 circuit breaker is a reliable element designed for a wide range of applications. With its electromagnetic braking system, overload trip function, and temperature-sensitive function, it is an excellent choice for those who need reliable circuit protection solutions for their power plants and industrial applications.