Output current Three phase testing :2*10A、2*5A、2*2ASingle phase testing:20A、10A、2ATest range 2*10A:500μΩ~500mΩ2*5A: 1mΩ~1Ω2*2A: 2.5mΩ~2.5Ω20A: 250μΩ~1Ω10A: 500μΩ~2Ω2A: 2.5mΩ~10Ω
Product Details
I.Brief introduction
The transformer DC resistance is a necessary test item in factory test of semi-finished products and finished products, as well as in installation, handover test and preventive test for power department .
II.Main features
1.Available to complete the measurement of all DC resistance data for high and low voltage winding measurement by wiring one time .
2. Three - phase simultaneous measurement and magnetic - assisted measurement, the speed is faster, and greatly reduce the damage of magnetic remanence.
3. Display and print all test data of transformer high and low voltage , and calculate the three - phase unbalance rate automatically, can also print the resistance data after convert to rated temperature .
4. It has perfect anti - potential protection function.
5. With automatic discharge and discharge indication function,reduce misoperation, ensure the safety of equipment and personnel.
6. The instrument can store 500 sets of test data permanently, and can also use usb flash drive to store data.
7. Adopts 5.7-inch LCD display, which can print test results at any time.
8.The instrument has the characteristics of wide applicable temperature, high precision, anti-vibration, anti-interference, easy to carry and so on.
III.Technical parameter
Output current Three phase testing :2*10A、2*5A、2*2A
Single phase testing:20A、10A、2A
Test range 2*10A:500μΩ~500mΩ
2*5A: 1mΩ~1Ω
2*2A: 2.5mΩ~2.5Ω
20A: 250μΩ~1Ω
10A: 500μΩ~2Ω
2A: 2.5mΩ~10Ω
Resolution 0.1μΩ
Accuracy ±(0.2% reads+ 2digits)
Size 420mm×250mm×340mm
Weight 15kg
IV. Environment
Environment temperature: -10℃~50℃
Environment humidity ≤85%RH
Power supply AC220V±10%
Power frequency 50±1Hz
V. Precautions
The instrument is designed with a back-EMF protection function, and the following step-by-step operations are still required during use to ensure the safety of test personnel and the instrument.
1. Please read the instruction manual carefully before using this instrument, and check that the wiring is correct and the grounding is good.
2. In the no-load voltage regulating winding, it is not allowed to switch the no-load tap changer during the test or when the power is not discharged.
3. It is not allowed to remove the test wire during the measurement process.
4. After the measurement is completed and the measurement state is exited, the wiring can be removed.
5. If there are problems that cannot be solved, please contact our company in time.