1HSZGY-50A DC Resistance Testeroverview

The DC resistance of transformers is a necessary measurement item for semi-finished and finished products in transformer manufacturing, factory testing, installation, major repairs, changes to tap changers, handover testing, and preventive testing by power departments. It is possible to check the welding quality of the winding joints and whether there is a turn to turn short circuit in the winding. It can also detect whether the various positions of the voltage tap changer are in good contact, whether the actual position of the tap changer matches the indicated position, whether the lead wire is broken, and whether there are broken wires when multiple wires are wound together. In order to meet the needs of rapid measurement of transformer DC resistance, our company has developed a DC resistance tester. This instrument adopts a new power technology, which has the characteristics of small size, light weight, large output current, good repeatability, strong anti-interference ability, and complete protection function. The whole machine is controlled by a high-speed microcontroller, with a high degree of automation and automatic discharge and discharge alarm functions. The instrument has high testing accuracy, easy operation, and can achieve rapid measurement of transformer direct resistance.

IIHSZGY-50A DC Resistance TesterPerformance characteristics

1The whole machine is composed ofhigh speedSingle chip microcontroller control, automaticHigh degree of transformation,Easy to operate.

2useHigh frequency switching power supplyTechnology,High output currentSuitable for measuring the DC resistance of large and medium-sized transformers.

3The protection function is complete and can reliably protect against the impact of back electromotive force on the instrument，More reliable performance.

4havesoundSound discharge alarm, clear discharge indication, reduce misoperation.

5Fast response speed, can directly switch between measurement statesOn loadTap changer, instrument automatically refreshesdata.

6. Adopting a vertical chassis structure for easy on-site use.

7Intelligent power management technology,The instrument always operates in the lowest power state,Effectively reduce internal heating of the instrumentSave energy.Can work continuously for several hours without interruption.

8. Dot matrix LCD, Chinese menu, printed output.

IIITECHNICAL INDEX

• Output current: 25A、 fiveA、 10A、20A、50A
• Range: 40μΩ～500mΩ （50A）

100μΩ～1Ω （20A）

　　200μΩ～2Ω （10A）

1mΩ～4Ω （5A）

2mΩ～8Ω (25A）

• Accuracy: 0.2%
• Resolution: 0.1 μ Ω
• Working temperature: 0-40 ℃
• Environmental humidity: ≤ 90% RH, no condensation
• Working power supply: AC220V ± 10%, 50HZ ± 1HZ