Phase defect display equipment used on thermomagnetic type moulded box type circuit breaker

Abstract

Disclosed is a display device for a thermal magnetic type molded case circuit breaker capable to display a phase deficiency occurred on a line to a user such that the user rapidly deals with the phase deficiency and prevents loss caused by over-heating generated due to the phase deficiency. The display device includes a power source for supplying electric power, a display for displaying the phase deficiency of the thermal magnetic type molded case circuit breaker by receiving power from the power source, a stationary contactor electrically connected to the power source and having a stationary contact, and a movable contactor electrically connected to the display and having a movable contact. The movable contactor vertically moves and forms a circuit together with the power source section and the display for displaying the phase deficiency state when the movable contact contacts with the stationary contact. A interlock lever rotates according to a horizontal movement of the shifter. A connection bar makes contact with both shifter and interlock lever.

Description

technical field [0001] The present invention relates to a phase defect display device of a thermomagnetic type molded cassette circuit breaker, which protects the power supply system by cutting off the fault current such as overload, short circuit current and electrical leakage when a fault current is generated on the power supply line A power line and an electrical load device in the present invention, and more specifically, relates to a phase defect display device for a thermomagnetic molded box circuit breaker, which can display a phase defect (phase deficiency) generated on a power line. Background technique [0002] As generally known in the industry, molded case circuit breakers are installed on power distribution boards in power receiving and distributing equipment provided by factories and buildings. In the no-load state, the molded case circuit breaker acts as a switchgear that supplies or cuts power to the electrical load. In the state of load, the molded box circ...

AI Technical Summary

Problems solved by technology

However, based on the principle of conventional thermomagnetic type molded cassette circuit breakers, it is difficult to identify the cause of the tripping operation

That is, it is difficult to ascertain whether the tripping operation is due to a fault current such as an overload current and an instantaneous current, or a phase defect, so that the problem caused by a phase defect cannot be dealt with quickly

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