This standard specifies the measurement performance, general technical requirements, measurement instrument control and calibration cycle of loop resistance testers and DC resistance rapid testers. This standard is applicable to the initial calibration and follow-up of DC resistance fast testers with an upper limit of measuring resistance of 20000μΩ and a DC current of no less than 100A and a DC resistance fast tester with an upper limit of measuring resistance of 200mΩ to 2000Ω and corresponding to measuring of DC current of 50A to 0.001A. Calibration and in-service inspection.
DL/T 967-2005 history
2005DL/T 967-2005 Verification regulation of loop resistance tester and DC resistance high-speed tester