DC resistance tester measurement current usually: 1A, 3A, 5A, 10A, 20A, 30A
DC resistance tester measurement current usually has different measurement gears such as 1A, 3A, 5A, 10A, 20A, 30A. The instrument consists of a constant current power supply and a voltage signal detection part, with five-digit LCD digital display. The output current gear is adjustable, suitable for DC resistance measurement of various small and medium-sized transformers.
Transformer DC resistance measurement is a mandatory test item in transformer manufacturing for semi-finished products, finished product factory tests, installation, commissioning tests, and preventive tests in the power sector. It can effectively detect manufacturing defects such as poor material selection, welding, loose connections, missing strands, broken wires in transformer coils, and hidden dangers after operation.
The DC resistance tester is a new generation of transformer DC resistance testing instruments. It can automatically select the test current according to different types of power transformers and display the test results at the fastest speed. The DC resistance tester also has functions such as storage, printing, discharge indication, and a built-in non-volatile memory that can save measurement data for a long time. The use of a liquid crystal display gives the instrument a good human-machine interface, making it the preferred equipment for DC resistance testing work.
The DC resistance tester is a high-precision, wide-range resistance tester controlled by a high-performance microprocessor. It can test resistances from 1μΩ to 3MΩ, with a maximum display of 30,000 counts. The highest test speed is 60 times/second. At a test speed of 15 times/second, it can still guarantee an accuracy of 0.05%, and the reading fluctuation can be controlled below 3 digits. It comes standard with a temperature compensation function, which can accurately test meter resistance. Three current modes can meet various demanding resistance testing requirements.
The transformer DC resistance tester is a new type of instrument designed for measuring the DC resistance of large-capacity transformers. It is composed of an integrated high-precision constant current power supply and test part. The test process is controlled by a microcomputer, automatically completing constant current judgment, data acquisition, data processing, resistance display, and printing.
The DC resistance tester is a high-precision replacement product for DC single and double arm bridges. The instrument adopts advanced switching power supply technology, and its measurement speed is more than a hundred times faster than that of bridges. The display part uses a four-and-a-half-digit LCD to show measurement results, and a three-and-a-half-digit LCD to show ambient temperature or test current value, overcoming the disadvantage of other similar products with LED displays that are difficult to read in sunlight. It also has an automatic arc suppression function. This instrument has the advantages of fast measurement, high precision, intuitive display, strong anti-interference ability, small size, low power consumption, stable and reliable test data, and is not affected by human factors. The instrument is equipped with a rechargeable battery pack (12V), suitable for both AC and DC use, convenient for on-site and field testing.
