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Method for detecting equipment equipotential bonding

A detection method and equipotential technology, applied in the direction of grounding resistance measurement, etc., can solve the problems of being unsuitable for chemical production site detection operations and high cost of testers, and achieve the effect of simple detection method, low detection cost, and electrical safety

Inactive Publication Date: 2012-09-26
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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AI Technical Summary

Problems solved by technology

Usually, the detection of equipotential bonding needs to use a special equipotential tester. The cost of this tester is relatively high, and some testers are not suitable for the detection of chemical production sites.

Method used

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  • Method for detecting equipment equipotential bonding
  • Method for detecting equipment equipotential bonding

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Embodiment Construction

[0013] Such as figure 1 As shown, the detection method of equipment equipotential bonding of the present invention comprises milliohmmeter 1 and grounding resistance tester 2, and this method comprises the steps:

[0014] Step 1, using the milliohm meter 1 to detect the electrical resistance value between each metal coupling body 31 and 32, the measured electrical resistance value should be less than or equal to 0.03 ohms; each metal coupling body can be any method at the junction of various pipelines Between the blue plate, between the pipe and the support body, between various instruments and the pipe;

[0015] Step 2, the contact rod 11 of the milliohm meter 1 overlaps the metal coupling bodies 31 and 32 for more than 2 seconds, and the detection operation is carried out in a ventilated environment;

[0016] Step 3, using the ground resistance tester 2 to detect the ground resistance value of each grounded metal coupling body 4, and the measured ground resistance value is ...

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Abstract

The invention discloses a method for detecting equipment equipotential bonding. The method comprises the following steps that: a milliohmmeter is employed to detect electrical resistance values among all metallic interconnects, wherein the detected resistance values should be less than or equal to 0.03 ohms; the time for overlap joint of a contact rod of the milliohmmeter and one metallic interconnect is greater than 2 seconds and detection work is carried out in ventilation environment; a ground resistance tester is utilized to carry out ground resistance detection on all grounded metallic interconnects, wherein the detected ground resistance values is less than or equal to 4 ohms; a distance between a voltage stake and a current stake is required to be larger than 5 meters, wherein the voltage stake and the current stake are connected with the ground resistance tester; and a distance from a ground resistance detection terminal of the ground resistance tester to a ground detection point is larger than 20 meters. According to the invention, the detection method has advantages of simpleness, reliability and low detection cost; and the method is suitable for detection work at a chemical production site and effectively ensures electrical security of working personnel and equipment.

Description

technical field [0001] The invention relates to an electrical detection method, in particular to a detection method for equipment equipotential connection. Background technique [0002] Equipotential is equal electric potential. If two test points are selected in a live line, and there is no voltage between them, that is, no potential difference, then we consider the two test points to be equipotential, and there is no resistance between them. All kinds of buildings and production site equipment, especially the equipotential bonding of pipelines, flanges, support frames, etc. in chemical production sites, are particularly important. The conductive part is connected with the artificial or natural grounding body with a conductor to reduce the potential difference and eliminate the danger of dangerous fault voltage introduced from various metal parts to ensure the safety of people and various equipment. Connecting scattered metal parts within a certain range with equipotentia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/20
Inventor 乔国林
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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