Multifunctional anti-miswiring power socket safety leakage protection device

Abstract

The invention relates to a multi-functional safe electricity leakage protection device capable of preventing false wiring of a power socket. The multi-functional safe electricity leakage protection device capable of preventing false wiring of a power socket comprises a outer shell, a phase-zero-ground dipolar copper plug, a zero sequence current mutual inductor arranged among zero lines, a zero sequence current mutual inductor arranged on a zero line, a test circuit, a free tripping relay K1, a silicon controlled rectifier, an after-current application-specific integrated circuit IC1, an after-current application-specific integrated circuit IC2, a ground line voltage detection comparator IC3 and a tripping driving protection circuit. When line connection of a power socket of a user does not meet the requirements of 'left zero right phase up ground', such as interchanging of the phase line and the zero line, or lacking of the ground line, or overlap connection of the phase line and the ground line, voltage of a machine casing can be beyond human body safe voltage of 36 V. Then an earth leakage protection device can achieve switching-off of the three phases and a user can be effectively protected.

Description

technical field [0001] The invention relates to a leakage protection device, in particular to a leakage protection device for preventing wrong wiring of a power socket. Background technique [0002] At present, all leakage protection devices sold on the market require users to ensure that the power socket is connected correctly and has a well-grounded ground wire when installing and using it. Once the user's power socket is connected incorrectly, such as the phase and neutral wires are interchanged, the ground wire is vacant, or the phase wire and the ground wire are overlapped and other abnormal conditions, the leakage protection device will not operate, and there will be no effective protection at all. cause personal injury. Contents of the invention [0003] In view of the deficiencies of the above existing leakage protection devices, the purpose of the present invention is to provide a leakage protection device product, which can prevent leakage in the connected elect...

AI Technical Summary

Problems solved by technology

Once the user's power socket is connected incorrectly, such as the phase and neutral wires are interchanged, the ground wire is vacant, or the phase wire and the ground wire are overlapped and other abnormal conditions, the leakage protection device will not operate, and there will be no effective protection at all. cause personal injury

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