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HM5002 20A Winding Resistance Ohmmeter

Winding Resistance Ohmmeter is the ideal equipment to measure transformer winding and DC resistance of high-power inductive device.

◆ Winding Resistance Ohmmeter is controlled by single chip microcomputer, which can automatically complete the functions of self check, data processing, display and so on.
◆ Dopts new power technology, which has the characteristics of small volume, light weight and large output current

Transformer's Winding resistance is the transformer manufacture of semi manufactured goods, finished product testing, installation, handover test and power sector preventive test project, can effectively find the material selection, welding, connecting parts of the transformer, the loose, lack of shares, such as the existence of hidden trouble. In order to meet the needs of the rapid measurement of transformer DC resistance, the use of its own advantages of the development of DC resistance tester. transformer winding resistance ohmmeter adopts new power technology, which has the characteristics of small volume, light weight and large output current. transformer winding resistance ohmmeter is controlled by single chip microcomputer, which can automatically complete the functions of self check, data processing, display and so on. The instrument has high accuracy, simple operation, and can realize the rapid measurement of transformer direct resistance.



1.Output strong current and automatic selection current, operation is simple.

2.Three channels measurement, real-time acquisition, while measuring three resistance values, and   the calculation of the three phase resistance imbalance.

3.Three phases can be measured at the same time, also it can test sigle channel, at the same time with temperature conversion function.

4.Perfect protection circuit, strong reliability.

5.Electric clock, calendar, 20 groups datas storage, access and print.

6.You can set the resistance phase, tap position and print information.

7.Vertical chassis structure, easy to operate.

8.Sound alarm indicating clear discharge, discharge, reduce misoperation

Technical parameter

1.Output current1A2.5A5A10A20A

2.Measuring range

  100μΩ     20A)

  200μΩ     10A

  1mΩ4Ω        5A

   2mΩ8Ω         (2.5A

   10 mΩ20Ω      (1A)





7.Power supplyAC220V±10%50HZ±1HZ



1. Are you manufacture ?

Yeah, we are manufacturer professional in design and produce high voltage test equipment with nearly 20 years experience .


2. When can I get the price ?

We usually quote within 6 hours after get your inquiry . If you are very urgent to get price, please feel free to contact us by Wechat&Whatsapp +86-13720145441 or send us by email, so that we will regard your inquiry priority .


3. Do you supply OEM?

 Of course, we supply OEM.


4. What about leading time for production ?

Honestly , it depends on order quantity and the product . Usually lead time is within 7 working days after deposit .


5. What is your terms of delivery ?

We accept EXW, FOB, CFR, CIF, DDU, etc . You can choose the one which the most convenient and cost effective for you .


6. What’s your payment terms :

TT payment, L/C at sight, Paypal, Western union, etc.


7. How much is the shipping cost and time ?

This is depend on the size and weight of your product, and the method of shipping ( by sea/ by ari/ by Express) and your designated port . Kindly afford us above information to check shipping cost and time for you .


8. What’s the warranty period ?

Our warranty period is one year free and lifelong maintenance .

If produce damage within one year ( not man-made damage ), we will send you spare parts for replacement .  After one year, maintenance is paid service .

9. What kind of Certificate you can provide ?

We can provide CE mark, ISO9001 quality certificate the third part Calibration Certificate (CNAS), factory test report .


10. Do you have Technical Backup to all customers from different countries ?

Surely, we have rich experience engineer to afford professional technical support and quick response to your technical questions .

We are manufacture with rich on site testing experience and understand how to deal with your problems . And our engineer can visit your company to afford technical support face to face if necessary .

Product detailed list

1.Host: 1unit

2.Testing cable: 1set

3.Power cable: 1pc

4.Printing pater: 2roll

5.Protective tube: 2pcs

6.Resistance: 1pc

7.Earth wire: 1pc

8.Manul: 1pc

9.Certificate of approval: 1pc

10.Warranty book: 1pc

Factory test and shippment

We will do factory test for every product before devilering, to ensure qualified of the product.

We will pack the product carefully and choose suitbale shippment for client,to ensure the safe arrival.

Installation and commissioning

we provide installation and commissioning assistance to get you up and running. Domestically within China or internationally, we will be there to support you. During the installation, integration and operation of a new test system, a variety of special services are involved. If it ’ s necessary, we can offer oversea commissioning service for our clients.

Service and support

In any fault case of our product, we will arrange engineer to deal with your problem within 24hours

Service guarantee

Contact purchase

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