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INTRODUCTION

DC resistance measurement of transformer winding is an essential test project during transformer delivery, repair and changing tapping switch. Usually, it is a time consuming task to use traditional methods (bridge method and voltage drop method) to measure transformer winding and DC resistance of high-power inductive device. In order to change this situation: shorten measurement time and reduce the staff’s workflow, our company has developed DC resistance rapid tester. The instrument using new power technology, with characteristics such as stable performance, rapid test, small size, light weight, easy operation, high measure precision and good data reproducibility, is the ideal equipment to measure transformer winding and DC resistance of high-power inductive device.

MAIN FEATURES

1,The machine is controlled by a high-speed single-chip, high degree of automation.
2,Using high-frequency switching power supply technology, high output current, suitable for medium-sized transformer DC resistance measurement
3,Perfect protection function, can be reliably protected the potential impact of the instrument, more reliable.
4,With sound discharge function, discharge indicating clear, reduce misuse.
5,Fast response, can directly convert load tap changer when measuring, the instrument automatically refresh the data.
6,Vertical chassis structure , easy field use
7,Intelligent power management technology, the instrument will always work at the minimum power state, effectively reducing the heat inside the instrument, saving energy. Uninterrupted hours of work.
8,Dot matrix LCD, with printer.

SPECIFICATION


100A50A
40A20A
Working Conditions

Temperature:0℃~40℃

Relative humidity:≤85%RH,Non-condensate

Measure Current10A,20A,50A,100A5mA/2.5A/5A/10A/20A/50A5mA/2.5A/5A/10A/20A/40A5mA/2.5A/5A/10A/20A
Measurement range

10A(500μΩ~2Ω);20A(200μΩ~1Ω);40A(100μΩ~500mΩ);100A:(10μΩ~100mΩ)

5mA(10Ω~20KΩ);2.5A(2mΩ~8Ω);5A(1mΩ~4Ω);10A(500μΩ~2Ω);20A(100μΩ~1Ω);50A:(40μΩ~400mΩ)5mA(10Ω~20KΩ);2.5A(2mΩ~8Ω);5A(1mΩ~4Ω);10A(500μΩ~2Ω);20A(100μΩ~1Ω);40A:(50μΩ~500mΩ)5mA(10Ω~20KΩ);2.5A(2mΩ~8Ω);5A(1mΩ~4Ω);10A(500μΩ~2Ω);20A(100μΩ~1Ω)
Resolution0.1μΩ


Accuracy±0.2%(full range)


Power Supply

AC 220V±22V,50Hz±2 Hz    Remark:Fuse 10A


Dimension  400mm(L)×350mm(W)×225mm(H)


Instrument weight17kg


Accessories

Serial NumberNameAmount
1Hostone
2
AC 220V Power line
one
3Test lineone
4Printing Paperone
5Test lineone
6Ground leadone
7Fusethree
8Manualone

SELECTION GUIDE

Model No.Measure CurrentConstant current sourceResolution/AccuracyWorking VoltagePower consumptionOthers

MEWOI-AZC-1A-Transformer-DC-Resistance-Tester-for-Transformer-Winding_80.jpg

MEWOI-AZC-1A

1A
1A(1μΩ~20mΩ、20mΩ~200mΩ、0.2Ω~2Ω);100mA(2Ω~20Ω);5mA(20Ω~200Ω);500uA(200Ω~2kΩ);50uA(2kΩ~20kΩ)。

1uΩ,

±(0.2%+2d)

DC:12V~16.8V;or AC:220V≤15W-

MEWOI-AZC-2A-Transformer-DC-Resistance-Tester-for-Transformer-Winding_80.jpg

MEWOI-AZC-2A

2A

2A(1μΩ~20mΩ、20mΩ~200mΩ、0.2Ω~2Ω);

200mA(2Ω~20Ω);

10mA(20Ω~200Ω);

1mA(200Ω~2kΩ);100uA(2kΩ~20kΩ)。

1uΩ,

±(0.2%+2d)

DC:12V~16.8V;or AC:220V≤15W-

MEWOI-AZC-3A-Transformer-DC-Resistance-Tester-for-Transformer-Winding_80.jpg

MEWOI-AZC-3A

3A

3A(1μΩ~20mΩ、20mΩ~200mΩ、0.2Ω~2Ω);

300mA(2Ω~20Ω);

15mA(20Ω~200Ω);

1.5mA(200Ω~2kΩ);200Ω~2kΩ。

1uΩ,

±(0.2%+2d)

DC:12V~16.8V;or AC:220V≤15W-

MEWOI-AZC-5A.DC-Power-Transformer-Winding-resistance-tester-5A_80.jpg

MEWOI-AZC-5A

5A

5A(20mΩ~2Ω),

0.5A(20Ω);

0.05A(200Ω);

0.005A(2000Ω)

0.1uΩ,

±(0.5%+2d) 

Rechargeable battery or AC220V 50HZ (±10%)≤100WPrinter

MEWOI-YHZ1010-DC-Low-Resistance-tester.80.jpg

MEWOI-YHZ1010

10A

0.5mΩ~ 0.82Ω(10A)

1mΩ-2Ω(5A)

5mΩ-10Ω(1A)

100mΩ-50Ω(200mA)

1Ω-250Ω(40mA)

100Ω-20KΩ(<20mA)

0.1uΩ,

±(0.2%+2d)

Rechargeable battery or AC220V 50HZ (±10%)
Printer/RS232/USB

MEWOI-ACZ-20A-Winding-Resistance-Ohmmeter_80.jpg

MEWOI-AZC-20A

20A

1A (10mΩ~20Ω)

5A (1mΩ~4Ω))

10A  (1mΩ~2Ω)

20A  (1mΩ~1Ω)

0.1uΩ,

±(0.2%+2d)


AC 220V±22V,50Hz±2Hz   Remark:Fuse 5A

≤300W,  Remark: Test current 10A

Data:255sets,

Printer

MEWOI-ACZ-40A-Winding-Resistance-Ohmmeter_80.jpg

MEWOI-AZC-40A

40A

2.5A(10mΩ~20Ω),

5A(1mΩ~4Ω);

10A(1mΩ~2Ω);

20A(1mΩ~1Ω);

40A(1mΩ~500mΩ)

0.1uΩ,

±(0.2%+2d)

AC 220V±22V,50Hz±2Hz  Remark:Fuse 10A≤1200W,  Remark: Test current 10A

Data:255sets,

Printer

MEWOI-ACZ-50A-Winding-Resistance-Ohmmeter_80.jpg

MEWOI-AZC-50A

50A

2.5A(10mΩ~8Ω)

5A(1mΩ~4Ω)

10A(1mΩ~2Ω)

20A(1mΩ~1Ω)

50A(1mΩ~500mΩ)

0.1uΩ,

±(0.2%+2d)

AC 220V±22V,50Hz±2Hz  Remark:Fuse 10A≤1500W,  Remark: Test current 10A

Data:255sets,

Printer

MEWOI-JYG100A-Transformer-DC-Winding-Resistance-Tester_016.jpg

MEWOI-JYG100A

100A

10A(500μΩ~2Ω),

20A(200μΩ~1Ω);

40A(100μΩ~500mΩ);

100A(10μΩ~100mΩ)

0.1uΩ,

±(0.2%+2d)

AC 220V±22V,50Hz±2Hz  Remark:Fuse 10A

Printer


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