Wuhan Goldhome Hipot Electrical Co., Ltd. is one of the leading manufacturers and suppliers of 3 phase dc wingding resistance tester in China. With abundant experience, our factory offer high quality customized products made in China with competitive price. Welcome to contact us for quotation.
Products overview:
The HMZRC 20A Rapid DC Resistance Tester represents the latest generation of equipment for measuring transformer DC resistance, specifically optimised for assessing the DC resistance of three-phase windings in high-capacity transformers. It enables simultaneous measurement of all three phase windings, allowing direct tap changer adjustment on on-load tap-changing transformers without requiring discharge. Measurement time is reduced to one-third that of conventional single-phase testing, significantly shortening operational duration and alleviating labour intensity.
Products Parameter
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Testing current |
Single phase: 1A 5A 10A 20A 40A Three phase: 1A 5A 10A 20A |
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Measurement scope |
Single phase: 1A 10 mΩ～20Ω 5A 1 mΩ～4Ω 10A 1 mΩ～2Ω 20A 1 mΩ～1Ω 40A 1 mΩ～0.5Ω Three-phase: 1A 10 mΩ～6Ω (each phase) 5A 1 mΩ～1Ω (each phase ) 10A 1 mΩ～0.6Ω (each phase ) 20A 1 mΩ～0.3Ω (each phase ) |
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Measurement accuracy |
±(0.2%full-scale±2 digital) |
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Maximum resolution |
0.1μΩ |
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Data storage capacity |
150 groups |
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Power supply |
AC 220V±22V, 50Hz±2 Hz |
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Working environment |
Ambient temperature: 0°～40° Relative humidity :≤80% |
Panel Description
The panel of DC Winding resistance tester is shown in the figure below:
1. Ia Ib Ic: The dc current output. In case of single phase or two-phase measurement, Ia and Ib are current output.
2. Ua Ub Uc Uo: The input of measuring voltage. In case of single-phase measurement, Ua and Ub are voltage input. In case of two-phase measurement, Ua and Ub are the voltage input of the first channel; Uc and Uo are the input of the second channel.
3.Panel printer: Prints the output measurement results.
4. LCD: displays the measurement results and operation prompting information, with the function definition of the five multi-function key-presses under the current state given in the key definition zone on the right, as shown in the figure below :
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2 0 0 7 . 0 1 . 0 1 |
Set |
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Run Mode: 3CH Run Curr : 20 A |
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View |
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Wiring Diagram |
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Mode |
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Curr |
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Run |
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1 4 : 0 2 : 5 1 |
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1 4 : 0 2 : 5 1 |
5.
: Contrast regulation of LCD
6. Power socket: the power input of the complete unit, with built-in fuse tube. The fuse tube is 10A/250V.
7. Earthing pole: The earthing pole on the enclosure of the complete unit. Make sure that it is reliably grounded during measurement.
Products Description
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