TH121B - Improving the earth leakage circuit breaker to have a capacity to withstand surges. - Google Patents

Abstract

It has revealed improvements in many cases of earth fault circuit breakers, such as short circuits or earth leakages. The use of electric power beyond the specified rating, etc., to have the ability to withstand surges. by using electronic circuits to detect the ground leakage of electricity as pre-defined and has improved the working system in organizing the circuit To prevent the discharge of the charge when surges occur. This may be caused by current and voltage faults or from insulation faults. Caused by electrical stress has improved the working system of the ground fault current circuit breaker. By connecting a new circuit, starting with the electric current into the electronic circuit. By using 6 direct contact switches that have the characteristics revealed in the fabrication that there is a greater distance between the contact points than the general switch. Which, as appropriate, is at a distance of at least 5 millimeters, thus preventing electric discharges from damaging the components when a surge occurs. In addition, this switch is also responsible for cutting the operation of the 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 acts as a bridge. To cut and reconnect electricity By the inside of the said circuit breaker At least consisted of A heat sensitive metal plate that limits the current when a predetermined overload occurs. And a set of solenoid coils that drive 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-circuit, the output terminal that serves as the point of transmitting current after the current from the source flows through the breaker to the load connected to it, the direct-connected 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 problems from the electronic circuit, check the leakage current is damaged, the test switch that serves 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 is connected 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.