NRZDC Transformer DC Resistance Tester (20A~100A)

Transformer DC Resistance Tester also known as Transformer Winding Resistance Tester it is a necessary testing project for transformer transition overhauling and changing tap switch it is also an important detecting project after fault. Transformer DC Resistance Tester is a quick test equipment for testing transformers generators motors lines and other DC resistance.
Transformer DC Resistance Tester is integrated high-precision power supply and DC resistance test in a whole as a new instrument which not only maintain the original advantage but also greatly reduces the size and weight of the instrument and expands the measurement range. The instrument adopts the high-performance single-chip microcomputer control simple operation easy to carry fast testing speed high precision good retest strong anti-interference capability automatically complete the judgment of steady flow data acquisition and processing and display resistance can accurately complete the measurement of transformer dc resistance This instrument is the best testing equipment for power plant power supply enterprises medium and large-sized power transformer manufacturing industries and enterprises.
According to different level of current Wuhan NANR Electric Co. LTD has developed several types of Transformer DC Resistance Tester they are NRZDC-5A NRZDC-10A NRZDC-20A NRZDC-40A NRZDC-50A NRZDC -100A etc.

The Characteristics of the products

1. Large output current wide measuring range small size light weight simple operation;
2.Fast test speed，high measurement accuracy，good retest capacity，strong anti-interference capability；
3. With perfect protective circuit and strong reliability;
4. With the function of discharge alarm sound of which the clear discharge indicating can reduce incorrect operations.
5. Using 192 * 64 large-screen LCD display display is clearly visible outdoor;
6. With high-speed micro thermal printer: can print measurement and historical data.

Item	NRZDC Low Resistance Ohmmeter (20A~100A)
	NRZDC-20A		NRZDC-40A			NRZDC-50A			NRZDC-100A
Testing current	20A 10A 5A 2A 1A		40A 20A 10A 5A 2.5A			50A 25A 10A 5A 2.5A			100A 50mA 20mA 10A 5A
Testing range	20A	100μΩ ~1Ω	40A		100μΩ ~500mΩ	50A		100μΩ ~400mΩ	100A		50μΩ ~100mΩ
	10A	500μΩ ~2Ω	20A		250μΩ ~1Ω	25A		250μΩ ~800mΩ	50A		100μΩ ~200mΩ
	5A	1mΩ ~4Ω	10A		500μΩ ~2Ω	10A		500μΩ ~2Ω	20A		200μΩ ~800mΩ
	2A	2mΩ ~10Ω	5A		1mΩ ~4Ω	5A		1mΩ ~4Ω	10A		500μΩ ~2Ω
	1A	5mΩ ~20Ω	2.5A		2mΩ ~8Ω	2.5A		2mΩ ~8Ω	5A		1mΩ ~4Ω
Measurement accuracy	±0.2% (full scale) ±2 digits
Data storage	500 groups
Display	192*64 Large screen LCD
Resolution ratio	0.1μΩ
Supply	AC220V±10% Frequency: 50±1Hz
Environment temperature	-10℃ ~ 50℃
Relative Humidity	≤85%RH
Dimension	430mm×250mm×265mm			430mm×250mm×265mm			430mm×250mm×265mm			430mm×250mm×265mm
Weight	12.5kg (does not include accessories)