Abstract:
A ground-fault circuit interrupter (GFCI) power receptacle with reverse wiring protection. The GFCI power receptacle has a circuit board assembled in a housing; a pair of resilient movable conducting arms attached to the circuit board, each having a movable contacts at its free end, a pair of stationary conducting arms each having a stationary contact at one end, and a pair of output face terminals each having a contact. The movable contacts can contact the stationary contacts and the output face terminal contacts to establish electrical connection between the input and output terminals of the power receptacle. The power receptacle has a simple structure where one movable contact can connect or disconnect the load in various working conditions, which can be used in various types of power receptacles.
Abstract:
A disconnect mechanism for a power receptacle, which includes a disconnect block, a locking member slidably coupled to the disconnect block, and an electromagnetic device moveably coupled to the locking member. The disconnect block includes two side arms extending outwards. A pressing plate is disposed above the disconnect block, and a disconnect spring is disposed above the pressing plate. The moveable contact arms of the main switch of the receptacle are disposed between the pressing plate and the disconnect block, and the pressing plate pushes the moveable contact arms when the main switch is being opened when a current leakage is detected. The receptacle also includes an auxiliary switch disposed because the disconnect block and the circuit board.
Abstract:
A disconnect mechanism for a power receptacle, which includes a disconnect block, a locking member slidably coupled to the disconnect block, and an electromagnetic device moveably coupled to the locking member. The disconnect block includes two side arms extending outwards. A pressing plate is disposed above the disconnect block, and a disconnect spring is disposed above the pressing plate. The moveable contact arms of the main switch of the receptacle are disposed between the pressing plate and the disconnect block, and the pressing plate pushes the moveable contact arms when the main switch is being opened when a current leakage is detected. The receptacle also includes an auxiliary switch disposed because the disconnect block and the circuit board.
Abstract:
A leakage current detection and protection circuit in a power plug includes an SCR (silicon-controller rectifier), diodes, capacitor, resistors, and a solenoid with a plunger. The control gate of the SCR is connected via a resistor to a metal sheath L of the cord. The solenoid SOL, the SCR and a diode are connected in series and connected across the hot and neutral lines of the power line (either line or load side), forming an SCR conducting path. When wire for the hot, neutral or ground lines in the cord is exposed due to damage or aging, the sheath around the wires becomes live, forming a conducting circuit from the sheath, resistors and diodes to the hot or neutral lines. The voltage on the resistor causes the SCR to conduct, which energizes the solenoid to open a switch between the line side and load sides of the plug.