A leakage protection device
A technology of leakage protection device and leakage switch, which is applied in the direction of emergency protection circuit device, circuit device, emergency protection device with automatic disconnection, etc. It can solve the problem of ground wire detection and protection in the case of ground wire leakage, and cannot play the role of leakage protection, etc. problems, to achieve the effect of improving the safety of use and preventing electric shock
Active Publication Date: 2019-04-05
ZHONGSHAN KAPER ELECTRICAL
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Problems solved by technology
[0002] The existing leakage protection device cannot provide effective leakage protection when a fault occurs in which only the neutral wire is disconnected but the live wire is still connected; on the other hand, the existing leakage protection device can only protect the live wire or the neutral wire Carry out leakage detection and protection, and cannot detect and protect the leakage of the ground wire, whether the ground wire is grounded, or whether the ground wire has a dangerous voltage
Method used
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[0020] A further detailed description will be made below in conjunction with the accompanying drawings and embodiments of the present invention:
[0021] Such as figure 1 As shown, a leakage protection device includes a casing 1, and the casing 1 is provided with a fire-neutral-ground three-wire input interface 2 and a fire-zero-ground three-wire output interface 3. A leakage switch 4 is arranged between the output interfaces 3. The leakage switch 4 is a fire-zero-ground three-wire disconnect switch in which the ground wire is connected before the fire-zero wire and then disconnected after the fire-zero wire. The fire-zero-ground three-wire input The interface 2 is connected with a ground wire grounding & ground wire with voltage detection 5, the fire-neutral-ground three-wire output interface 3 is connected with a fire-neutral wire leakage current detection circuit 6 and a ground wire leakage current detection circuit 7, and the leakage switch 4 is connected There is a trip ...
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The invention discloses a leakage protection apparatus. Detection protection of electric leakage of a live wire and a zero line and electric leakage of a ground wire can be performed, facts that whether the ground wire is grounded and whether the ground wire has a dangerous voltage are detected and protected, when any of the zero line or the live wire is disconnected, a relay is then switched off and stops working, electric leakage switches cannot be switched on, the live wire, the zero line and the ground wire of a power supply are disconnected, and the usage security is greatly improved.
Description
[technical field] [0001] The invention relates to a leakage protection device. [Background technique] [0002] The existing leakage protection device cannot provide effective leakage protection when a fault occurs in which only the neutral wire is disconnected but the live wire is still connected; on the other hand, the existing leakage protection device can only protect the live wire or the neutral wire Leakage detection and protection cannot detect and protect the leakage of the ground wire, whether the ground wire is grounded, or whether the ground wire is carrying dangerous voltage. [Content of the invention] [0003] The present invention overcomes the deficiencies of the above-mentioned technologies, and provides a leakage protection device, which can detect and protect the leakage of the live and neutral wires and the leakage of the ground wire, and can also detect and protect whether the ground wire is grounded and whether the ground wire is carrying a dangerous vo...
Claims
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IPC IPC(8): H02H3/02
CPCH02H3/02
Inventor 邹建华余星进秦开恩何亚玲刘小文
Owner ZHONGSHAN KAPER ELECTRICAL