TH118A - Improving the earth leakage circuit breaker to have a capacity to withstand surges. - Google Patents

Abstract

It has disclosed improvements to the earth leakage circuit breaker in many cases, such as a short circuit or earth leakage. The use of power in excess of the rated power, etc., have the ability to withstand surges. By using electronic circuits to detect the earth leakage of electricity. As predefined and Has improved the working system in the circuit arrangement To prevent the release of destructive charge when the surges occur This may be due to current and voltage faults or from an insulation fault. Caused by electrical stress, the system of the earth leakage circuit breaker has been improved. By connecting a new circuit, starting with the current into the electronic circuit By using the 6 switch with the characteristics revealed in the invention, the contact distance is greater than the conventional switches. Which, as appropriate, at a distance of at least 5 mm, thus preventing the discharge of electrical charges destroying various components when the surges occur. In addition, the aforementioned switch also serves to cut the work of the said electronic circuit.

Claims (1)

1. Earth leakage circuit breaker Which automatically disconnects the power distribution system in many cases, including short circuit or earth leakage. Power consumption Overload as predetermined It is at least comprised of an input terminal that serves as a receiving point from the current source, a circuit breaker that serves as a bridge. To cut and reconnect electricity Within the said circuit breaker At least consisted of A heat sensitive metal plate that limits the current when a predetermined overload occurs. And the solenoid coil that drives the mechanism in the circuit breaker to cut off the current immediately. When the electronic circuit detects that A predefined earth leakage current, electric shock, or short circuit has occurred. Selector switch That serves as an optional predefined earth leakage current sensing sensitivity option. Electronic circuit That serves to detect the earth leakage current Electric shock, or short-circuiting, the output terminal acting as the point of transmitting current after the current from the source flows through the circuit breaker to the load connected to it, the direct-connect switch acting at least cut off Work of the electronic circuit, check the leakage current To make it possible to use electricity In the event that there is a leakage current from the load or problem from the electronic circuit, check the leakage current is damaged, the test switch that is to test the operation of the electronic circuit that Leakage current detection system Still work normally or not When you press the switch At the very least, arrange for this earth leakage circuit breaker. There is a special feature that the switch directly connects to Where the electrical contacts of the switches are positioned appropriately apart. Which, as appropriate, is at a distance of at least 5 mm to accommodate surges.