Product parameters:
Critical for transformer handover, overhaul, and tap-changer maintenance, this DC resistance tester employs advanced power technology. It delivers stable performance, rapid measurements, compact portability, intuitive operation, high accuracy (±0.2%), and exceptional repeatability – making it the essential solution for transformer windings and high-power inductive equipment diagnostics.
Technical parameters:
Test current | 2.5A 5A 10A 20A 40A |
Range | 2.5A：10mΩ~8Ω |
5A：1mΩ~4Ω | |
10A：1mΩ~2Ω | |
20A：1mΩ~1Ω | |
40A：1mΩ~500mΩ | |
Measurement accuracy | ± (0.2% full scale ±2 words) |
Data storage | 255 |
Display | LCD, resistance display is 4 1/2 bits |
Maximum resolution | 0.1μΩ |
Power | AC 220V±22V, 50Hz± 2Hz, safety tube 10A |
Maximum power consumption | 1200W, when the test current is 40A |
Working environment | Ambient temperature：0° to 40° |
Relative humidity：≤80% | |
Volume | 440╳230╳490(mm) |
Weight | 20kg without accessories |
Feature:
1. Compact in size and lightweight.
2. Full English menu operation, easy and convenient to operate.
3. Fast measurement speed, accurate and stable data.
4. Equipped with automatic discharge and discharge indication functions, reducing misoperation and ensuring equipment and personnel safety.
Precautions:
① After measuring the inductive load, the test line cannot be directly removed to avoid endangering the safety of testing personnel and equipment due to inductive discharge. The output terminal of this machine is equipped with a discharge circuit. When the output is turned off, the inductor will release energy through the instrument. The test line can only be removed after the discharge indicator is completed.
② For no-load tap changers, it is not allowed to switch tap changers during the measurement process.
③ If the power suddenly shuts down during the measurement process, this machine will automatically start discharging. Please do not immediately remove the wiring, wait at least 30 seconds before removing the wiring.
④ When measuring, do not short-circuit other untested windings to ground, otherwise it will slow down the transformer magnetization process and prolong the data stability time.
⑤ Please check the power supply voltage before starting up: AC 220V ± 10% 50Hz.
⑥ Please confirm that the tested equipment has been powered off and disconnected from other live devices during the experiment.
⑦ The casing must be reliably grounded during the experiment.
⑧ During the experiment, unrelated items are not allowed to be stacked on or around the equipment panel.
⑨ When replacing the fuse and accessories, please use the same model as this instrument.
⑩ This instrument should be moisture-proof and oil proof
