Transformer windingDC resistance testIt is a test item for transformers after handover, major repairs, and changes to tap changers. Under normal circumstances, measuring the DC resistance of transformer windings and high-power inductive devices using traditional methods such as bridge method and voltage drop method is a time-consuming and labor-intensive task. In order to change this situation, shorten measurement time, and reduce the workload of testers, our company has developed a DC resistance rapid tester. The transformer DC resistance tester adopts a new power supply technology, which has the characteristics of fast measurement, small size, easy use, and high measurement accuracy. It is an ideal device for measuring the DC resistance of transformer windings and high-power inductive equipment. transformerDC resistance testerMeets the requirements of the national standards GB6587-86 "General Principles for Environmental Testing of Electronic Measuring Instruments" and GB6593-86 "Quality Verification Rules for Electronic Instruments". Product features: Able to quickly and accurately measure the DC resistance of transformer windings; ◆ Equipped with comprehensive protection functions; ◆ Small size and easy to carry; ◆ LCD full Chinese menu, easy and intuitive operation; Fast testing speed, high accuracy, good data repeatability, and strong anti-interference ability; The transformer DC resistance tester is suitable for measuring and analyzing inductive low resistance resistance of various power transformers, transformer windings, etc.

DC resistance testerTechnical Specifications

◆ Current and range: (single-phase or two-phase) 1m Ω~1 Ω 20A 1m Ω~2 Ω 10A 10m Ω~4 Ω 10m Ω~20 Ω 1A (three-phase) 1m Ω~0.6 Ω 10A 10m Ω~1.3 Ω 10m Ω~6 Ω 1A ◆ Accuracy: 0.2% ± 2 characters (25 ± 2 ℃) ◆ Resolution: 0.1 μ Ω ◆ Weight: ≤ 15 kg ◆ Power supply: AC220V ± 10% Frequency: 50Hz ± 5% ◆ Operating environment: Temperature: 0-40 ℃ Relative humidity: ≤ 80% ◆ Safety performance: Insulation resistance: ≥ 2M Ω Leakage current: ≤ 5mA