Electricity taking mechanism of residual-current circuit breaker
A technology of earth leakage circuit breakers and electrical components, applied in the direction of switches operated by ground fault current, protective switch terminals/connections, etc., which can solve the problems of electric shock feeling and the switch not being disconnected.
Pending Publication Date: 2021-07-23
ZHEJIANG TENGEN ELECTRIC
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Problems solved by technology
[0004] Therefore, the technical problem to be solved by the present invention is to solve the problem that the PCB in the prior art directly takes power, which causes an electric shock feeling when touching the load end of the open circuit breaker, and will mistakenly believe that the switch is not in the disconnected state. A power-taking mechanism for an earth leakage circuit breaker is provided
Method used
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Embodiment
[0035] refer to Figure 1 to Figure 4 As shown, the present invention provides a leakage circuit breaker, including a housing 1, the housing 1 is provided with a power taking mechanism of the leakage circuit breaker, the power taking mechanism includes a handle 2, a leakage circuit board 3 and an electromagnetic system 4, the handle 2 There is a push rod 5 inside the shell 1, the electromagnetic system 4 is set as a voltage coil, and a yoke 6 is set at both ends of the voltage coil, and a contact spring 7 is set inside the shell 1, and one end of the contact spring 7 is located at Between the yoke 6 and the push rod 5 and in a suspended state, the other end of the contact spring 7 is in contact with the leakage circuit board 3, and the handle 2 rotates to drive the push rod 5 to contact the contact spring 7 and make the contact spring 7 and the contact spring 7 The yoke 6 contacts.
[0036] When the circuit breaker is closed, when the handle 2 is turned clockwise, when the ha...
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The invention relates to an electricity taking mechanism of a residual-current circuit breaker. The electricity taking mechanism comprises a handle, an electric leakage circuit board and an electromagnetic system, the handle is located in a shell and provided with a push rod, the electromagnetic system is provided with a magnet yoke, a contact spring is arranged in the shell, one end of the contact spring is located between the magnet yoke and the push rod and is in a suspended state, the other end of the contact spring is connected with the electric leakage circuit board, and the handle rotatably drives the push rod to contact with the contact spring and make the contact spring contact with the magnet yoke. According to the invention, when a moving contact and a static contact are disconnected, the contact spring is in a suspended state at the moment, so that no electric contact exists, the circuit board is powered off, and the circuit board is powered off. Therefore, the current is not transmitted to a load end, the induced voltage is not transmitted to the load end, when the load end of the opening circuit breaker is contacted, the feeling of electric shock is avoided, and the situation that the switch is not in a good off state by mistake is avoided.
Description
technical field [0001] The invention relates to the technical field of leakage circuit breakers, in particular to a power-taking mechanism of leakage circuit breakers. Background technique [0002] Leakage circuit breaker is a switch that can automatically operate when the leakage current in the circuit exceeds a predetermined value. A switching device that turns on, carries a certain time and breaks current. It has been widely used in all levels of outgoing lines and terminal systems of power distribution systems in industrial fields, construction fields, water conservancy and hydropower and other fields. [0003] The circuit breaker is composed of shell, handle, operating mechanism, contact system, zero-sequence current transformer, leakage test tripping mechanism and arc extinguishing system. At present, there are existing circuit breakers with PCB measurement or protection functions. Many PCBs are powered by welding one end of the lead wire directly from the load end, ...
Claims
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IPC IPC(8): H01H71/08H01H83/04
CPCH01H71/08H01H83/04
Inventor 陈平黎永胜卢权胜杨晓腾陈志强吴昊邓明凯
Owner ZHEJIANG TENGEN ELECTRIC