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Circuit-breaker Introduction
time2011/08/18
circuit-breaker
Normal circuit conditions or provisions of abnormal circuit conditions (such as short circuit) and connected to a certain period of time, breaking the mechanical switch carrying electrical current. Circuit breaker in the power system functions are: ① control. Depending on the operating needs of some of the electrical equipment and lines into or out of operation. ② protection. Electrical equipment or line failure, through the current transformer and relay system to issue the sub-gate signal, automatically breaking the circuit breaker, the rapid removal of the defective part to ensure trouble-free part of the power system normal operation. Circuit breaker from the electrical conductivity can be divided into contact, interrupter devices, insulation parts, base, drive mechanism and operating mechanism and other components. The main performance parameters are: rated voltage, maximum operating voltage, rated current, rated short circuit breaking current, rated short-circuit making current, rated short time withstand current, rated peak withstand current and breaking time.
Normal circuit conditions or provisions of abnormal circuit conditions (such as short circuit) and connected to a certain period of time, breaking the mechanical switch carrying electrical current. Circuit breaker in the power system functions are: ① control. Depending on the operating needs of some of the electrical equipment and lines into or out of operation. ② protection. Electrical equipment or line failure, through the current transformer and relay system to issue the sub-gate signal, automatically breaking the circuit breaker, the rapid removal of the defective part to ensure trouble-free part of the power system normal operation. Circuit breaker from the electrical conductivity can be divided into contact, interrupter devices, insulation parts, base, drive mechanism and operating mechanism and other components. The main performance parameters are: rated voltage, maximum operating voltage, rated current, rated short circuit breaking current, rated short-circuit making current, rated short time withstand current, rated peak withstand current and breaking time.