Universal current measurement device for high-voltage DC withstand voltage test

Abstract

A universal current measurement device for high-voltage DC withstand voltage test belongs to the technical field of direct current measurement, and especially relates to a universal current measurement device for high-voltage DC withstand voltage test. The invention provides a universal current measurement device for high-voltage DC withstand voltage test which is of high safety and convenient to use. The device comprises a wireless measurement terminal and handheld equipment. The device is characterized in that the handheld equipment includes a housing (3); buttons (4), a liquid crystal display (5) and a charging interface (13) are arranged on the housing (3); a handheld equipment battery (6), a handheld equipment antenna (7), a liquid crystal display interface (8), a handheld equipment MCU (9), a storage circuit (10), a handheld equipment wireless communication module (11) and a real-time clock circuit (12) are arranged inside the housing (3); the MCU (9) is connected with the storage circuit (10), the handheld equipment wireless communication module (11), the real-time clock circuit (12) and the buttons (4); and the MCU (9) is connected with the liquid crystal display (5) through the liquid crystal display interface (8).

Description

technical field [0001] The invention belongs to the technical field of direct current measurement, and in particular relates to a general current measuring device for a high-voltage direct current withstand voltage test. Background technique [0002] The preventive test of electrical equipment insulation is an important measure to ensure the safe operation of the equipment. The DC withstand voltage test can find hidden defects in the insulation in time. Therefore, the DC withstand voltage test is one of the test items that must be done when the power equipment is powered off for maintenance. However, in the high-voltage DC test, the microammeter used to measure the DC current is often disturbed or even damaged, and it is prone to vibration during transportation and testing, and has a high incidence of problems such as being impacted during the discharge of the high-voltage generator and failing to work normally. Moreover, due to the different sizes of high-voltage micro-ampe...

AI Technical Summary

Problems solved by technology

However, in the high-voltage DC test, the microammeter used to measure the DC current is often disturbed or even damaged, and the incidence of problems such as being easily shaken during transportation and testing and being impacted during the discharge of the high-voltage generator and failing to work normally is relatively high. Moreover, due to the different sizes of the high-voltage micro-amperes produced by different manufacturers, they cannot be replaced with each other. As a result, once the micro-ampere meter is damaged during the test, the entire test will not be able to be carried out for a long time.

Images