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N600 one-point grounding test device and application thereof

A technology of grounding test and test terminal, which is applied in the field of N600 one-point grounding test device, can solve problems such as complex structure, achieve the effect of simplifying the device, filling in hand-held portable instruments, and improving work efficiency

Inactive Publication Date: 2016-10-26
国网山东省电力公司聊城供电公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device has the advantages of high safety, reliability and efficiency, but the structure is more complicated

Method used

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  • N600 one-point grounding test device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 shown.

[0028] An N600 one-point grounding test device, comprising a voltmeter and a resistance unit arranged in parallel with each other; the resistance unit includes an ammeter, a first resistance, a second resistance and a third resistance arranged in series; the first resistance, the second resistance and the third resistance The resistors are respectively connected in parallel with a relay K1, a relay K2 and a relay K3; the two ends of the voltmeter are test terminals. The resistance values ​​of the first resistor, the second resistor and the third resistor are 5Ω, 10Ω and 10Ω respectively.

Embodiment 2

[0030] N600 one-point grounding test device as described in embodiment 1, its difference is that, N600 one-point grounding test device also comprises the control module and the control panel that are respectively connected with power supply module; Relay K1, relay K2, relay K3, voltmeter and ammeter respectively Connect to the control module.

Embodiment 3

[0032] The difference between the N600 one-point grounding test device as described in Embodiment 2 is that the voltmeter and the ammeter are electronic voltmeters and electronic ammeters respectively.

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Abstract

The invention relates to an N600 one-point grounding test device and an application thereof. The test device comprises a voltage meter and a resistor unit which are mutually arranged in parallel, wherein the resistor unit comprises a current meter, a first resistor, a second resistor and a third resistor which are sequentially connected in series, the first resistor, the second resistor and the third resistor are respectively connected in parallel with a relay K1, a relay K2 and a relay K3, and two ends of the voltage meter are test ends. The test device is advantaged in that the test device is convenient to use on site, same type work is simplified, N600 one-point grounding test work of a transformer station is convenient to develop, work efficiency is improved, and hidden safety trouble of incorrect protection motion caused by N600 multi-point grounding of the transformer station in operation can be effectively eliminated.

Description

technical field [0001] The invention relates to an N600 one-point grounding test device and an application thereof, belonging to the technical field of the N600 one-point grounding test. Background technique [0002] The substation busbar PT reduces the primary high voltage to a low-level secondary voltage according to a certain transformation ratio, and then connects it to the voltage parallel panel, and then leads multiple branches from the voltage parallel panel for protection, measurement and control, and metering devices. [0003] Safety regulations and eighteen anti-accident measures ("Eighteen Major Anti-Accident Measures of the State Grid Corporation of China") require that the voltage secondary circuit in the substation has one and only one grounding point. In order to ensure the safety of people and equipment, the N600 branch of the secondary circuit of the voltage transformer must have one and only one point of grounding. If there are multiple grounding points in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
CPCG01R31/50
Inventor 王之猛李俊良刘鑫王华玺孙嘉翼王家永万基磊曹景雷马腾石星昊
Owner 国网山东省电力公司聊城供电公司
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