DC Resistance Tester for Low-resistance Measurement and Testing of Large Transformers and Motors
Winding resistance test of inductive test objects, such as power transformers, is one of the most effective non-intrusive ways of checking its condition. Due to their advanced design, DV Power winding resistance meters provide high test currents (up to 100 A DC) and high accuracy (up to 0.1%) within light and portable test instruments. In addition to winding resistance measurement, it is also possible to perform simple, quick and reliable transformer on-load tap changer condition assessment by recording the test current during tap changer operation, also known as DVtest. Because of that, problems with a tap changer connection, contacts, and switching procedure can be detected.
DV Power winding ohmmeters consist of single-phase RMO-T and three-phase TWA series. Models from the TWA series are designed for six-winding resistance measurement of power and distribution transformers, with only one single-step cable setup. As a result of reducing the total test time, it enables significant saving of time and money.
Electrical parameters |
||
Power supply |
Single phase AC 220V±10% or 110V±10%, 50/60HzAC |
|
Cooling way |
intermittent air cooled |
|
Current output |
10mA, 100mA, 1A, 5A, 10A, 20A |
|
Test voltage |
DC 28V |
|
Test range |
1mΩ-1Ω (20A) |
|
1mΩ-2Ω (10A) |
||
1mΩ-4Ω (5A) |
||
100mΩ-20Ω (1A) |
||
10Ω-200Ω (100mA) |
||
100Ω-20kΩ (10mA) |
||
Accuracy |
0.2%±2bit |
|
Test voltage |
DC 28V |
|
Resolution |
0.1μΩ |
|
Max storage volume |
200 SETS |
|
LCD |
5.7″black and white LCD display |
|
Communication |
RS232 and USB communication interface |
|
Printer |
internal installed 58mm wide thermal printer |
|
Standard |
DL/T 596-1996, IEC61010-1, IEC61326-1,GB6587.1-86 |
|
Mechanical parameters |
||
Dimension (L×W×H) (mm) |
415x319x168 |
|
Weight (kg) |
7 |
|
Environmental conditions |
||
Operating temperature |
-20°C to 50°C |
|
Storage temperature |
-40°C to 70°C |
|
Relative humidity |
≤85%RH |
Chongqing Gold Mechanical&Electrical Equipment Co.,Ltd was founded in 2008. We have a strong team including top sales, skilled engineers and we have our own manufacture with high quality. we mainly design and manufacture the Transformer Tester, Circuit Breaker Analyzer, CT PT Analyzer, Hipot Tester , Relay Tester and so on for more than 10 years.
After several years’ development, our products have become high intelligent and wide coverage. And our company has become one of the leading manufacturer of oil purifier and electrical testing equipment in China;
We have developed sales channels in many countries such as UAE, Saudi Arabia, Malaysia, Thailand, Pakistan, India, Germany, Belgium, USA, Mexico, Kenya, Nigeria, South Africa and other countries worldwide.
And we have gained strong advantage and high reputation in international market.
Certificates:
Exhibitions:
Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd.
Mobile: +86 151 2302 9823
Email:
WhatsApp/Skype:+86 151 2302 9823
Tel:86-23-62613622
Fax:86-23-62940030
Website:www.cqgoldequipment.com Add:25F, Huarun Center, Xiejiawan Street, Jiulongpo District, Chongqing, China, 400050
Click “Send” for more information!