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Precautions for DC resistance tester

time:2020/9/20   source:华天电力  reading:241 time

Electric power undertaking decoration test equipment | DC resistance tester is widely used in power generation and power supply units, transformer manufacturing industry and large and medium-sized power users. The safety of the use of the instrument is also a concern, so what are the precautions in use?


Transformer DC Winding Resistance Tester.png


1. Matters needing attention


1. After measuring the inductive load, the test line cannot be directly removed, so as not to endanger the safety of testers and equipment due to inductive discharge. The output terminal of this machine is equipped with a discharge circuit. When the output is turned off, the inductor will discharge energy through the instrument. The test line must be removed after the discharge instruction is completed;


2. For no-load regulating transformers, it is not allowed to switch the tap switch during the measurement process;


3. If the power supply is suddenly cut off during the measurement process, the machine will automatically start to discharge, please do not immediately disassemble the wiring, wait at least 30 seconds before disassembling the wiring;


4. During measurement, do not short-circuit the grounding of other untested windings, otherwise it will slow down the magnetization process of the transformer and prolong the data stabilization time;


5. Please check the power supply voltage before starting;


6. During the test, please confirm that the tested equipment has been powered off and disconnected from other live equipment;


7. The case must be grounded reliably during the test;


8. Irrelevant items are not allowed to be stacked on and around the equipment panel during the test;


9. When replacing the fuse and accessories, use the same model as the instrument;


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