Transformer Winding Resistance Ohmmeter

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Product Code : 17

Product Description

Transformer winding resistance ohmmeter

Description of winding resistance ohmmeter

This ZRS series transformer winding resistance ohmmeter is the newest instrument for measuring DC resistance of windings of big power transformers. It may measure three windings simultaneously!
There is auto-discharge circuit for operator safety.
For OLTC transformer, there don’t need discharge. Test duration is only one third of those by conventional single-phase DC meter.
It adopts large-size LCD displayer, graphical interface displaying.
It is equipped with built-in thermal printer and big-capacity storage.
It is portable, light weight, not more than 13kg!

Main parameters

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