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Switch operating characteristic testbed calibrating method based on current sensor method

A current sensor and characteristic test technology, which is applied in the direction of circuit breaker testing, etc., can solve the problems of lack of calibration, damage of test bench, and large error of test bench difference, etc., and achieve good applicability

Inactive Publication Date: 2015-05-27
TIANJIN RES INST OF ELECTRIC SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Switch characteristic test benches are widely used, but the calibration lacks certain norms and operation standardization and unified steps, which has caused great obstacles to operators in the actual calibration process, which not only affects work efficiency, but also causes many test benches to fail. Poor error is large, and even cause damage to the test bench

Method used

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  • Switch operating characteristic testbed calibrating method based on current sensor method
  • Switch operating characteristic testbed calibrating method based on current sensor method
  • Switch operating characteristic testbed calibrating method based on current sensor method

Examples

Experimental program
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Embodiment 1

[0079] Checked product information

[0080] Equipment name: Instantaneous action characteristic test bench

[0081] Model specification: SB-63, 100 / 225

[0082] Factory number: 197

[0083] Production unit: Yueqing Pioneer Automation Equipment Co., Ltd.

[0084] Calibration date: March 4, 2014

[0085] Output current range: 0-1000A, this example chooses to measure 900A as the calibration point

[0086] Output current accuracy: ±5%

[0087] Current conduction time accuracy: ±1ms

[0088] Its calibration steps are:

[0089] ⑴Appearance and accessories inspection

[0090] Visually inspect the appearance and accessories of the test bench. The appearance and structure of the test bench are intact, and the text symbols and signs of the functions meet the corresponding standards, and are clear and correct. Metal parts are free from rust and other mechanical damage. The switch and button operation of each part of the test bench is flexible and reliable.

[0091] ⑵Work normal...

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Abstract

The invention relates to a switch operating characteristic testbed calibrating method based on a current sensor method. The switch operating characteristic testbed calibrating method comprises the following steps: (1), checking appearance and attachments; (2), checking work normality; (3), selecting a calibrating spot; (4), measuring the effective value of the output current; (5), measuring the current conducting time accuracy; (6), measuring insulating resistance; (7), measuring a grounding resistor; (8), measuring temperature rise. The switch operating characteristic testbed calibrating method provided by the invention is excellent in applicability, adopts a relatively reasonable and accurate measuring way at the aim of the effective value of output current and the current conducting time measurement, and is an optimized measuring method for insulating resistance measurement, grounding resistance measurement and temperature rise measurement.

Description

technical field [0001] The invention belongs to the field of electrical testing equipment, in particular to a method for calibrating a switch action characteristic test bench based on a current sensor method. Background technique [0002] The switching characteristics test bench is mainly used for tripping characteristic tests of components such as circuit breakers, and outputs a large current through boost current to provide a certain period of alternating current for tripping characteristic tests. At present, the switch action characteristic test bench can be divided into switch action characteristic instantaneous bench, switch action characteristic delay bench and switch action characteristic comprehensive bench. The production system and other parts are composed, and its structure is usually as shown in the accompanying drawings figure 1 shown. [0003] The switch characteristics test bench is widely used, but the calibration lacks certain specifications and operation ...

Claims

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Application Information

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IPC IPC(8): G01R31/327
Inventor 孙宁李洁平李颖国亚磊穆生乐李昕
Owner TIANJIN RES INST OF ELECTRIC SCI