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Method for detecting shell drain voltage of working appliance (power) equipment and two-step anti-electric-shock scheme

A detection method and technology of leakage voltage, applied in the direction of measuring current/voltage, measuring electricity, measuring electrical variables, etc.

Inactive Publication Date: 2006-10-25
朱玉光
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

And the power must be cut off quickly to ensure safety

Method used

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  • Method for detecting shell drain voltage of working appliance (power) equipment and two-step anti-electric-shock scheme
  • Method for detecting shell drain voltage of working appliance (power) equipment and two-step anti-electric-shock scheme
  • Method for detecting shell drain voltage of working appliance (power) equipment and two-step anti-electric-shock scheme

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Embodiment Construction

[0088] The method of detecting the leakage voltage of the shell of the operating equipment is applicable to the design of the leakage voltage detection instrument and the electric shock prevention instrument, see figure 1 The dotted line box II and the dotted line box III are analyzed below:

[0089] Includes circuit:

[0090] 1. Leakage voltage measurement circuit;

[0091] 2. Leakage voltage setting circuit;

[0092] 3. Voltage comparison circuit;

[0093] 4. Microcomputer monitoring circuit.

[0094] 1. The leakage voltage measurement circuit consists of end,

[0095] The order is from the power line L to the control switch K to the electrical winding xy through the insulation layer to the equipment shell z to the diode V D1 To take the measured electrical node a to the resistor r 1 To the ground neutral line N (PE); the other branch is routed from the equipment shell z to the filter capacitor C 1 To the ground neutral line N(PE).

[0096] The voltage of node a i...

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Abstract

The present invention is composed of measuring circuit, configuring circuit, and voltage comparing circuit, and capable of realizing casing leak voltage measurement, switching off, and alarm functions to service equipment. The present invention is Suitable for following respects: 1, detecting electric appliance (electric power) equipment casing leak voltage and designing detection instrument,2, according to electric appliance (electric power) equipment drain voltage variation judging insulating layer bad change and constituting safety precautions, 3, providing new method for developing novel electric shock proof instrument.

Description

technical field [0001] The invention discloses a method for detecting the leakage voltage of the shell of the operating electrical (power) equipment and a two-step electric shock prevention scheme formulated by the method, which is specifically applicable to the following aspects: [0002] 1. It is suitable for detecting the leakage voltage of the electrical (electrical) equipment casing and the design of the testing instrument; [0003] 2. It is suitable for judging the deterioration of the insulation layer and formulating safety measures according to the change of leakage voltage of electrical (electric) equipment; [0004] 3. The two-step electric shock prevention scheme provides a new method for the research and development of new electric shock prevention instruments; [0005] 4. The above research results can also be applied to the following market areas: [0006] (1) Electrical (electricity) equipment production department; [0007] (2) Monitoring of operating power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/155G01R19/165G01R31/00H02H3/00
Inventor 朱玉光
Owner 朱玉光
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