| 摘要 |
A leakage current detection interrupter (LCDI) with self-testing function, which includes: a leakage current detection unit, including multiple current-carrying wires and at least one leakage current detection wire for detecting a leakage current of the current-carrying wires; a phase protection unit, coupled to at least one current-carrying wire on the input side of the multiple current-carrying wires, and coupled to at least one current-carrying wire on the output side of the multiple current-carrying wires via the leakage current detection unit, to form a current loop; wherein the phase protection unit can generate a control signal to disconnect the electrical coupling between the LCDI and the power source. By using a temperature controlled module, the leakage current detection unit and the phase protection unit, an LCDI with self-testing function is achieved. When there is a leakage current in the current-carrying wires, or the current-carrying wire is open, or the temperature of the electrical appliance exceeds a predefined range, or the leakage current detection wire is broken, the LCDI can disconnect its electrical coupling with the power source, ensuring the safety of the appliance and enhancing the quality of the electrical grid. |
| 主权项 |
1. A leakage current detection interrupter (LCDI) device with self-testing function, comprising:
a leakage current detection unit, including multiple current-carrying wires for carrying a current from an AC power source and at least one leakage current detection wire for detecting a leakage current of the current-carrying wires; and a phase protection unit, coupled to an input side of at least one current-carrying wire of the multiple current-carrying wires, and coupled to an output side of at least another current-carrying wire of the multiple current-carrying wires, to form at least one current path between the input side of the one current-carrying wire and the output side of the other current-carrying wire via the leakage current detection wire and the phase protection unit to pass a current in the current path during a half cycle of the AC power source, wherein the phase protection unit generates a control signal for disconnecting the electrical coupling between the LCDI and a power source under any one of a group of conditions including: when a leakage current of the current-carrying wires is detected by the one leakage current detection wire, when the leakage current detection wire is open, and when the one or the other current-carrying wire is open. |
