Introduction:- When the transformer is cross-connected, overhauled or some of its
switches are changed, direct current resistance testing of the
transformer winding is necessary;
- In general, to measure the transformer winding or large power
output indicator equipment, the traditional electrical bridge method and
pressure drop method require much time and energy.
- Thus, to shorten the measurement time and reducing the workload of testers, we developed rapid direct current resistance tester, which is designed with new power supply technology and stable
performance, fast measurement, compact, easy to use, high accuracy,
good data reproducibility.
- Transformer DC Winding Resistance Tester is an ideal equipment for measuring transformer winding and large power output inductor equipment.
Features: - Transformer DC Winding Resistance Tester is used for testing, installing and exchanging the semi-finished or
finished transformer.
- It can effectively help you to find disfigurements in the
manufacturing of transformer, such as the winding choosing,
welding, loose joints, missing shares and hidden danger in the
running.
- Transformer DC Winding Resistance Tester is suitable for large-scale transformer above240MVA in temperature
rising tests.
- 840MVA transformer low-voltage direct-resistance tester completed
within 2 minutes and the data is stable and accurate.
- Dual-channel shows the measurement data at the same time.
- Each interval of 60 seconds automatically print data.
- Equipped with temperature conversion software, curve waveforms.
Specifications: | Item | WRT-2A | WRT-5A | WRT-10A | WRT-20A | WRT-40A | WRT-100A | WRT-20S | | Test current | 2A | 5A | 10A | 20A | 40A | 25A,50A, 100A | Single phase: 1A,5A,10A,20A, 40A Three phase: 1A, 5A, 10A, 20A | | Measuring range | 1μΩ~ 4.5kohm | 1μΩ~ 20kohm | 1μΩ~ 20kohm | 1μΩ~ 10kohm | 1μΩ~ 10kohm | 50μΩ-200mΩ(100A) 100μΩ-400 mΩ(50A) 200μΩ-800 mΩ(25A) | Single phase: 10mΩ～20Ω(1A) 1 mΩ～4Ω(5A) 1 mΩ～2Ω(10A) 1 mΩ～1Ω(20A) 1 mΩ～0.5Ω(40A) Three-phase: 10 mΩ～6Ω (1A,each phase) 1 mΩ～1Ω (5A,each phase ) 1 mΩ～0.6Ω (10A,each phase ) 1 mΩ～0.3Ω (20A,each phase ) | | Resolution | 1μΩ | | | Max. Error | 0.2%RDG+2D | | | Voltage output | 20V | | | Resolution | 1μΩ | | | Power supply | AC220V±10%% 50Hz/60Hz | | | Working environment | -10℃-+40℃ RH≤85% | |
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