This specification specifies in detail the requirements, test methods, inspection rules, Encasement, marking, transportation and storage of insulation resistance testers. The scope of application includes pointer and digital insulation resistance testers with rated output voltage not higher than 10kV, as well as the insulation resistance part of the comprehensive safety performance tester and the withstand voltage insulation tester. The cited normative documents include the safety requirements of electrical equipment for measurement, control and laboratory use, temperature, Humidity, Vibration, Impact, transportation and other test methods and mass inspection rules, etc. The terms and definitions section clearly defines the insulation resistance tester and related terms.