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Transformer Winding Resistance Meter

This ZRS series transformer winding resistance meter is the newest instrument for measuring DC resistance of big power transformers windings. It's able to measure three windings simultaneously and it has auto-discharge circuit for operator safety, for OLTC transformer, discharge no needed. Test duration is only one third than conventional single-phase DC meter.

The transformer winding resistance meter adopts large-size LCD displayer and graphical interface displaying. It is equipped with built-in thermal printer with big-capacity storage and is portable, light weight, no more than 13kg.

Main Parameters of Typical Transformer Winding Resistance Meter

Code ZRS-10A ZRS-20A
Output current Single-phase 1A,5A,10A, 20A 1A,5A,10A,20A,40A
3-phase 1A, 5A, 10A 1A, 5A, 10A, 20A
Measuring range Single-phase 1A: 10mΩ~20Ω 5A: 1mΩ~4Ω 10A: 1mΩ~2Ω 20A: 1mΩ~1Ω 1A: 10mΩ~20Ω 5A: 1mΩ~4Ω 10A: 1mΩ~2Ω 20A: 1mΩ~1Ω 40A: 1mΩ~0.5Ω
3-phase 1A: 10mΩ~6Ω (each phase) 5A: 1mΩ~1Ω (each phase) 10A: 1mΩ~0.6Ω (each phase) 1A: 10mΩ~6Ω (each phase) 5A: 1mΩ~1Ω (each phase) 10A: 1mΩ~0.6Ω (each phase) 20A: 1mΩ~0.3Ω (each phase)
Accuracy +/- 0.2%
Resolution ratio 0.1μΩ
Working temperature 0~40°
Relative humidity ≤90%
Electric power AC220V,50Hz
Data storage 150 units

Note: Single-phase winding resistance ohmmeters and dual-channel winding resistance ohmmeters are also available.

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