Externally controlled circuit breaker without hazardous floating voltage

Abstract

The invention discloses an external control circuit breaker without a dangerous suspended voltage. The external control circuit breaker comprises: a circuit breaker body, which is used to realize on and off of a line in which the external control circuit breaker without the dangerous suspended voltage is located; an external control unit; a suspension voltage control unit, which is used to ensure when the circuit breaker body is in an off state, a line output part of the circuit breaker body has no voltage to ground. The external control unit comprises: an external control signal receiving terminal, a power supply receiving terminal and a circuit break motion triggering part, wherein the power supply receiving terminal is connected with the line output part of the circuit breaker body so as to obtain electric power. The electric power is provided for the circuit break motion triggering part.

Description

Technical field [0001] The present invention relates to an externally controlled circuit breaker, and particularly relates to an externally controlled circuit breaker in which the circuit output part of the circuit breaker body generates no dangerous floating voltage to the ground after the circuit breaker body produces a circuit breaking action. Background technique [0002] Circuit breaker is an important electrical equipment that controls the on and off of the circuit. The "circuit breaker body" defined in the present invention is a circuit breaker with basic breaking and closing functions, including but not limited to miniature circuit breakers, molded case circuit breakers, etc. . [0003] Now with the development of control technology and the continuous strengthening of demand for intensive management of power management departments, especially the promotion of prepaid switches, circuit breakers with external control functions have become a relatively mainstream direction for...

AI Technical Summary

Problems solved by technology

[0006] However, there are also hidden dangers in this way, especially when the user actively wants to repair the externally controlled circuit breaker itself or the lines connected to the outgoing line. The voltage is zero, and there is no risk of electric shock if the user touches it with his hands; however, due to the existence of the external control signal cs, it forms a circuit between the ground, the triggering part 121 of the disconnection action and the power receiving end 122, so that the line outlet part L- A voltage is generated between out and ground to form a current, but at this time the voltage and current are small; however, the resistance value becomes smaller due to the damage of the drop-down resistor in the internal circuit of the external control unit during use or the control circuit board is damp, which will cause Make the L-out of the outgoing part of the line form a large current to the ground and hurt people, thus causing danger when the equipment is overhauled

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