Voltage tester, also known as electrical insulation strength tester, or dielectric strength tester, also known as dielectric breakdown device, insulation strength tester, high voltage tester, high voltage breakdown device, voltage tester. A prescribed AC or DC high voltage is applied to the charged part of the appliance and the non-charged part (generally the shell) to check the appliance's insulating material can withstand the voltage resistance of the test. Electrical appliances in long-term work, not only to withstand the role of the rated operating voltage, but also to withstand the operation process caused by a short period of time higher than the rated operating voltage of the over-voltage effect (over-voltage value may be higher than the value of the rated operating voltage several times). Under the action of these voltages, the internal structure of electrical insulation materials will change. When the overvoltage intensity reaches a certain value, it will make the material insulation breakdown, the electrical appliances will not operate normally, the operator may be electrocuted, endangering personal safety. The main testing indexes of electrical safety include AC/DC withstand voltage, insulation resistance, leakage current, grounding resistance, etc. AC/DC withstand voltage test is used to check the electrical safety performance of the product in the actual working condition, which is one of the important indexes to check the electrical safety performance of the equipment. Currently on the market to see the withstand voltage tester GB4706 (equivalent IEC1010) standard, the use of more desktop structure of a single test index test instrument, can not meet the needs of users need to test multiple indicators of the demand for comprehensive testing; and the current market withstand voltage testers are mostly used in the traditional testing methods, testing accuracy is not high, the use of technology and the main performance indicators and foreign advanced level has a certain gap, can not fully meet the current market, the withstand voltage tester is not a good test. There is a certain gap between the technology used and the main performance indicators and the advanced level of foreign countries, can not fully meet the needs of the current development of electrical safety performance testing. Therefore, it is of great significance to study the advanced technology and better performance indexes of the voltage resistance test system in line with the latest international standards.
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