Three-core power line disconnection protector

A technology for power cords and protectors, applied in the direction of automatic disconnection emergency protection devices, emergency protection circuit devices, electrical components, etc., can solve problems such as damage to household appliances, fire, ignition of flammable items, etc. stability, the effect of circuit voltage stability

Pending Publication Date: 2018-11-30
成都彩虹电器(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phenomenon can damage the household appliances at the rear end, or it may ignite the surrounding flammable items, causing a fire

Method used

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  • Three-core power line disconnection protector
  • Three-core power line disconnection protector

Examples

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Embodiment 1

[0022] Such as figure 1 , figure 2 As shown, the disconnection protector for the three-core power cord includes a pre-circuit 5, a three-core power cord 4 and a rear circuit 6, the pre-circuit 5 is located at the power input end of the three-core power cord 4, and the The rear circuit 6 is located at the power output end of the three-core power cord; the three cables of the three-core power cord 4 are respectively the first cable 41, the second cable 42, and the third cable 43; the front circuit 5 includes a key switch 3, a relay JK1, a diode D1, and a diode D2; the key switch 3 is connected in series on the first cable 41, and the two ends of the normally open contact of the relay JK1 are connected in parallel with the key switch 3; the key switch 3 One end is connected to the power supply, the other end of the key switch 3 is connected to the negative pole of the diode D1, the positive pole of the diode D1 is connected to the positive pole of the diode D2 and the control t...

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PUM

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Abstract

The invention discloses a three-core power line disconnection protector. A front-mounted part and a rear-mounted part are connected into one body through a three-core power line; when a key switch ofthe front-mounted part of a power line protector is pressed, a power supply is supplied to the tail end of the three-core power line from a first cable and a third cable of the three-core power line,is fed back through diodes D3 and D4 of the rear-mounted part and a second cable of the three-core power line, is supplied to a relay JK1 of the front-mounted part, and forms a loop with diodes D1 andD2 of the front-mounted part, the relay JK1 works, and a normally open contact JK1 remains closed; and if any cable of the three-core power line is disconnected, the relay JK1 is powered off, and thenormally open contact of the relay is disconnected and no longer supplies the power supply to back-end household appliances. Therefore, the fault caused when wires in the three-core power line are disconnected and pull electric arcs can be effectively prevented, the problems that the back-end household appliances are damaged, or, surrounding inflammable materials are ignited to cause a fire can be further avoided, and the use safety of the household appliances can be improved.

Description

technical field [0001] The invention relates to a power line protector, in particular to a power line protector with power line disconnection protection. Background technique [0002] With the widespread use of household appliances, the input power lines of household appliances are broken due to various reasons such as bending and extrusion. After the household appliance is powered on, the disconnected part of the power cord will continuously pull up the arc, resulting in high heat and carbonization of the insulating layer. This phenomenon can damage the household appliances at the rear end, or it may ignite the surrounding flammable materials, causing a fire. Fires caused by arc faults account for more than 60% of electrical fires, causing serious harm to people's production and life. [0003] In view of this, there is a need for a safety device that can better protect people's household electrical appliances without increasing the cost of production facilities. Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/253H02H3/04H02H5/10
CPCH02H3/04H02H3/253H02H5/10
Inventor 梁冰袁友权巫松波李神兵黎义强
Owner 成都彩虹电器(集团)股份有限公司
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