Metering calibration method of lightning protection element tester

A technology of lightning protection components and calibration methods, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., and can solve problems such as not meeting the requirements for measuring high-voltage voltage sources

Pending Publication Date: 2021-03-19
辽宁瑞雨计量检测服务有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a measurement and calibration method for a lightning protection component tester, which has the advantage of measuring a high-voltage voltage source, and solves the problem that the output DC voltage of the existing lightning pr

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  • Metering calibration method of lightning protection element tester

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Embodiment Construction

[0021] see Figure 1-2 , a method for measuring and calibrating a lightning protection component tester, comprising the following steps:

[0022] S1: The lightning protection component tester is used to test components such as piezoresistors. During operation, the output DC voltage range is 0-2000V, and the DC current range is 0-1000μA;

[0023] S2: The voltage terminal distinguishes between high-end and low-end output;

[0024] S3: Use a DC high-resistance voltage divider or a digital high-voltage meter in parallel at the high and low ends to measure the voltage parameters;

[0025] S4: Use a high-voltage high-resistance box and a digital multimeter to measure the current value of the lightning protection original tester;

[0026] S5: During measurement, the high end of the voltage output is connected to the high voltage and high resistance box;

[0027] S6: Then connect to the digital multimeter, and then connect to the low end of the voltage output.

[0028] Ambient tem...

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Abstract

The invention discloses a metering calibration method of a lightning protection element tester. The method comprises the following steps: S1, a lightning protection element tester tests a piezoresistor and other components, wherein the output DC voltage range is 0-2000 V in operation, and the DC current range is 0-1000 [mu]A; S2, a voltage terminal distinguishes high-end output from low-end output; S3, a direct-current high-resistance voltage divider or a digital high-voltage meter is connected to the high end and the low end in parallel, and voltage parameters are measured; and S4, the current value of the lightning protection original tester is measured by using a high-voltage high-resistance box and a digital multimeter. According to the invention, aiming at the characteristic that calibrated equipment is a voltage source, a high-resistance voltage divider or a digital high-voltage meter is used for measuring voltage, so that the influence of the internal resistance of a measuring instrument on a voltage measurement value is avoided; and a high-voltage high-resistance resistor is used for adjusting the current of a measurement loop, so that the state of the lightning protectionelement tester in the actual use process can be simulated, and the whole measurement loop can be protected from generating overcurrent.

Description

technical field [0001] The invention relates to the technical field of electromagnetic measurement and calibration, in particular to a measurement and calibration method for a lightning protection component tester. Background technique [0002] When the lightning protection components work normally, the resistance value is infinite, which is equivalent to the disconnected state of the switch element. When the lightning surge or overvoltage comes, the lightning protection components are turned on, which is equivalent to the switch being closed, and the overcurrent is discharged to the ground. , so as to protect the electrical equipment from being damaged. The existing lightning protection component tester needs to be used in the production of lightning protection components, and the output DC voltage of the existing lightning protection component tester is generally around 2000V, and the digital multimeter cannot be used directly Measurement, and the impedance in the voltage ...

Claims

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Application Information

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IPC IPC(8): G01R35/00
CPCG01R35/005
Inventor 于凤于楠刘延博颜亭亭张伟裴琳盛元栋王玉梅
Owner 辽宁瑞雨计量检测服务有限公司
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