Alternating voltage test verification device for verifying automatic single-phase kilowatt-hour meter production line

Abstract

The invention discloses an alternating voltage test verification device for verifying an automatic single-phase kilowatt-hour meter production line. The alternating voltage test verification device comprises an insulating shell which is connected with the interior of the insulating shell through terminal blocks. The interior of the insulating shell comprises a resistive voltage division sampling circuit which is used for sampling high-voltage input signals, output signals of the resistive voltage division sampling circuit are transmitted to a measurement and detection unit for measuring the sampled voltage, the measurement and detection unit is communicated with an MCU unit through an SPI (serial peripheral interface), and a measurement value is displayed on a display module controlled by the MCU unit; a power source and a management unit thereof supply power to the MCU unit and the measurement and detection unit. The alternating voltage test verification device is simple, direct, portable and convenient for operators to connect wires, test and read data, and voltage withstanding test efficiency can be improved greatly.

Description

technical field The invention relates to an AC voltage test checking device for testing an automatic single-phase electric energy meter assembly line. Background technique The withstand voltage tester is a measuring instrument, which is mainly used for the testing of electric meters, collectors, terminals and other equipment between power companies and between power supply companies and users. An important part of the withstand voltage performance of equipment such as terminals and terminals. In order to ensure that the on-site test work is carried out accurately and smoothly, the AC voltage test verification device is particularly important. At present, there is no accurate measuring instrument for testing the voltage withstand meter in the world and at home. The State Grid has higher requirements for the accuracy of the reliability test of the electric meter, and puts forward higher requirements for the accuracy of the AC withstand voltage meter. Moreover, the use of the...

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Problems solved by technology

The AC voltage test is a verification item stipulated in the National Metrology Verification Regulations JJG596-2012. The verification device must provide an AC test voltage of 2kV or 4kV during the test, and the test time is 1min. For the manual inspection of the AC voltage items of the electric energy meter one by one, it can be easily It is easy to judge and complete the test, but for the large-scale multi-meter automatic verification single-phase smart energy meter assembly line system, the regulations require that each meter should meet the specified test requirements. It is difficult to judge whether all epitopes are provided with test voltage, and there is no similar device at home and abroad at present

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