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20A single-phase transformer DC resistance measuring instrument
20A single-phase transformer DC resistance measuring instrument

20A single-phase transformer DC resistance measuring instrument

Applications:

Used for semi-finished and finished product factory testing, installation, handover testing, and preventive testing in transformer manufacturing for the power department

  • Response within
    24 hours

  • Free warranty
    12 month

  • On-line training
    Support

Profile:

The measurement of transformer DC resistance is a common measurement item in the manufacturing of transformers, including semi-finished and finished product factory testing, installation, handover testing, and preventive testing by the power department. It can effectively detect manufacturing defects such as material selection, welding, loose connection parts, missing strands, and broken wires of transformer coils, as well as hidden dangers after operation. The DC resistance tester is a fast testing equipment for measuring the DC resistance of large transformers, transformers, generators, and motors.

Features:

1. The instrument has a wide range of resistance measurement, high resolution, and multiple current gear options.

2. The instrument has automatic testing (blind testing) function.

3. The instrument has a complete back electromotive force protection function.

4. The instrument has a temperature conversion function, which automatically converts the resistance value to standard temperature.

5. The longitudinal test of the DC resistance of the on load tap changer can be completed in one go.

6. The instrument has high measurement accuracy, anti-interference, shock resistance, and convenient portability.

7. Equipped with a 5.0-inch 65K color touch screen, it is easy to operate.

8. Built in large capacity non-volatile memory, capable of storing 500 sets of data.

9. Built in high-speed micro thermal printer, capable of printing measurement data.

10. Built in high-precision clock, real-time display of time.

11. It has USB storage function.

 

Parameter:

Test current

Scope of testing

Accuracy

 

20A

100μΩ~1.0Ω

± (0.2% reading+0.5 μ Ω)

 

10A

1mΩ~2.0Ω

± (0.2% reading+1.0 μ Ω)

 

5A

2mΩ~4.0Ω

± (0.2% reading+2.0 μ Ω)

 

2A

10mΩ~10Ω

± (0.2% reading+0.01m Ω)

 

1A

20mΩ~20Ω

± (0.2% reading+0.02m Ω)

 

300mA

100mΩ~66Ω

± (0.2% reading+0.1m Ω)

 

100mA

200mΩ~200Ω

± (0.2% reading+0.2m Ω)

 

30mA

2.0Ω~600Ω

± (0.2% reading+2.0m Ω)

 

<1mA

600Ω~50KΩ

± (0.5% reading+1.0 Ω)