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Superfast leakage switch and control method thereof

A leakage switch and control method technology, applied in electrical components, circuit devices, emergency protection circuit devices, etc., can solve problems such as the inability to fully guarantee casualties and other problems, and achieve improved turn-off speed and safety, good safety, and reduced product. Effect

Active Publication Date: 2014-04-23
陈小龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] According to the above data, the current leakage protection switch is still technically unable to fully guarantee that no casualties will be caused in the event of an electric shock

Method used

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  • Superfast leakage switch and control method thereof
  • Superfast leakage switch and control method thereof
  • Superfast leakage switch and control method thereof

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Embodiment Construction

[0060] refer to figure 1 - Figure 19 , an ultra-fast leakage switch of the present invention, including a power transmission line, the power transmission line is provided with a release 1, and also includes an AC power electronic switch 2, and the AC power electronic switch 2 is connected in series to where the release 1 is located. On the transmission line, the AC power electronic switch 2 also includes a control port for controlling its on-off, and a detection device 3 for detecting the state of the transmission line is also provided on the transmission line, specifically, the detection device 3 It is a zero-sequence current transformer, and also includes an intelligent control system 4, and the intelligent control system 4 is respectively connected with the release 1, the control port of the AC power electronic switch 2 and the detection device 3.

[0061] The present invention controls the on-off of the AC power electronic switch 2 through the intelligent control system...

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Abstract

The invention discloses a superfast leakage switch and a control method thereof. An alternating-current power electronic switch is connected in series to a power transmission line, and an intelligent control system controls on / off of the alternating-current power electronic switch. As the alternating-current power electronic switch is a non-contact power switch, the alternating-current power electronic switch can quickly respond and be turned off when leakage is detected. The turn-off time is within 0.2ms so that the leakage current is limited within 10mA. Compared with a traditional mechanical leakage switch, the turn-off speed and safety of the superfast leakage switch are greatly improved, the product of 'ampere-second' can be effectively reduced, and the probability of casualties can be further reduced.

Description

technical field [0001] The invention relates to the field of leakage protection switches, in particular to an ultra-fast leakage switch and a control method thereof. Background technique [0002] When leakage occurs in various household appliances, the metal casing is easily charged. When the human body touches the charged casing, the current passes through the human body and enters the ground, causing electric shock accidents. Most of the current leakage protection switches use mechanical releases, which rely on metal contact The on and off of the point is used to control whether there is an output voltage. The general action time is about 0.1S, which can basically realize the function of leakage protection. [0003] At present, the power supply in all countries in the world is alternating current with a frequency of 50-60 Hz and a voltage of 110V-240V. When this frequency of alternating current passes through the body, the ions in the cells are driven to move back and fort...

Claims

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Application Information

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IPC IPC(8): H02H3/32
Inventor 陈小龙李刚
Owner 陈小龙