Dc resistance tester is a high precision replacement of dc single and double - arm bridge. The instrument adopts switching power supply technology, by four and a half LCD liquid crystal display measurement results, three and a half LCD liquid crystal display ambient temperature or test current value, to overcome the shortcomings of other similar products by LED display value in the sun inconvenient reading, at the same time with automatic arc elimination function, AC, DC dual-use, easy to field and field test.
The following points should be paid attention to in the operation of dc resistance tester:
1) After measuring the inductive load, the test line can not be removed directly, so as not to endanger the safety of the tester and equipment due to the inductive discharge. The output end of the machine is provided with a discharge circuit. When the output is turned off, the inductor releases energy through the instrument. Be sure to remove the test line after the discharge indication is completed.
2) For the no-load voltage regulating transformer, it is not allowed to change the tap switch during the measurement process.
3) If the power supply is suddenly cut off during the measurement, the machine will automatically start discharging. Please do not remove the wiring immediately and wait at least 30 seconds before removing the wiring.
4) During measurement, other untested windings shall not be short-circuit grounded, otherwise it will lead to slow magnetizing process of transformer and prolonged data stability time.
5) Please check the power supply voltage before starting: AC 220V±10% 50Hz.
6) During the test, please confirm that the equipment under test is powered off and disconnected from other live equipment.
7) The enclosure must be reliably grounded during the test.
8) Irrelevant items are not allowed to pile up on and around the equipment panel during the test.
9) When replacing fuses and accessories, please use the same model as the instrument.
10) The instrument should pay attention to moisture-proof and oil-proof.
Dc resistance test of transformer winding is an essential test item after transformer handover, overhaul and change of tap switch. In general, it is a time-consuming and labor-consuming work to measure dc resistance of transformer windings and high-power inductors by traditional methods (bridge method and voltage drop method). In order to change this situation, shorten the measuring time and reduce the testing personnel's work burden, the company developed a dc resistance rapid tester (hereinafter referred to as the direct resistance meter). It adopts new power supply technology, with stable performance, rapid measurement, compact size, easy to use, high measurement accuracy, good data repeatability and so on. It is an ideal equipment for measuring dc resistance of transformer winding and high-power inductor.
Wuhan Xinshengneng is specialized in the production of electric power testing equipment manufacturers, the production of a wide range of products, models, cost-effective products, guaranteed service, welcome to call 0312-3188565 consultation!
