Patent ID: 8154831
Filing Date: 2012-04-10
Classification: H01B,H01H,H02H

Abstract:
1. A leakage current detection interrupter, comprising: (I) a movable assembly housing having a first side surface and an opposite, second side surface, and a body defined therebetween, wherein the body defines two vertical openings on the first side surface and the second surface; (II) a first fixed contact holder having a first fixed contact point, and a second fixed contact holder having a second fixed contact point; (III) a first movable contact holder and a second movable contact holder, each having a fixed end attached to the movable assembly housing and a movable end, wherein the first movable end has a first movable contact arranged for contacting the first fixed contact, the second movable end has a second movable contact arranged for contacting the second fixed contact; (IV) a movable assembly that moves between a first position in which each fixed contact makes contact with the respective movable contact and a second position in which the fixed contacts are separated from the movable contacts; (V) a resetting component having a first end accessible to a user for resetting the leakage current detection interrupter and a second end with a tapered tip and a notch, which, when the movable assembly is in the first position, is engaged with the movable assembly; (VI) a resetting component spring which is used to bias the resetting component; (VII) an electromagnetic tripping component, which, when energized, which is responsive to a fault condition, causes the movable assembly to be in the second position from the first position, thereby causing the resetting component to disengage the movable assembly, wherein the fault condition comprises a condition when a leakage current is detected, and a condition when a ground fault is detected; (VIII) an leakage current protection circuit assembled on a printed circuit board for detecting the fault condition, wherein the leakage current protection circuit comprises a first input LI-L, a second input LI-N, a third input LI-G, a first out put LO-P, a second output LO-N and a third output LO-G, wherein the leakage current protection circuit is capable of detecting a fault condition and energizing the electromagnetic tripping component to cause resetting component to disengage the movable assembly in responsive to the fault condition; (IX) a set of three electrical wires to an appliance, wherein a first wire connects the first input LI-L to the first output LO-P, a second wire connects the second input LI-N to the second output LO-N, and a third wire connects the third input LI-G to the third output LO-G of the leakage current detection interrupter, and wherein the first wire and the second wire are protected by a plurality of protective shields; (X) a first switch K (XI) a second switch K (XII) an trip coil J (XIII) a leakage current detection unit having a metal oxide varister MOV with a first terminal and a second terminal, wherein the first terminal of the MOV is electrically coupled to the first input LI-I and the second terminal of the MOV is electrically coupled to the second input LI-N; (XIV) a current interrupter having a relay having a first terminal and a second terminal, and a first resistor R (XV) a circuit condition indicator circuit having a light emit diode LED with an anode and a cathode and a second resistor R wherein the leakage current detection unit comprises a first diode D 1 having an anode and a cathode, wherein the anode is electrically coupled to the first input LI-L, and the cathode is electrically coupled to the first terminal of the relay, and a second diode D 2 having an anode and a cathode, wherein the anode is electrically coupled to the second input LI-N, and the cathode is electrically coupled to the first terminal of the relay and the cathode of the first diode D 1 , wherein when a leakage current is detected by the first diode D 1 and second diode D 2 between the first input LI-L and second input LI-N, a current passes through the relay, causing the relay to close the circuit of the trip coil J 1 and simultaneously disconnecting the first switch K 1 and the second switch K 2 .