| 摘要 |
The leakage detection protection circuit comprises power input and output ends, an induction coil, a self-excitation coil, a control chip, a controlled silicon rectifier, a commutation diode, a resistor, a current limiting resistor, a filter capacitor, a tripping coil, a pair of main circuit switches linked with a reset button, a test button, and first and second test switches. When the reset button is in a tripped state, the first test switch is open and the second test switch is closed. Additionally, when the reset button is pressed down, the first test switch changes from open to closed, the second test switch remains closed, and the neutral wire of the power input end is connected to the output end of the live wire of the power input end to enable generation of an analog leakage current. Finally, when the reset button is reset, the first and second test switches are both open.
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