ZY-3A DC Resistance Tester (AC/DC)

Product Introduction

ZY-3A DC Resistance Tester (AC/DC)It 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. It adopts a new power technology, which has the characteristics of fast measurement, compact 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.
This DC resistance rapid tester complies with the requirements of DL/T845.3-2004 and the standards GB6587 "General Principles for Environmental Testing of Electronic Measuring Instruments" and GB6593 "Quality Calibration Rules for Electronic Instruments".

Product alias
DC resistance speed tester, transformer DC resistance tester, transformer winding DC resistance tester, transformer DC resistance speed tester, transformer DC resistance fast tester, inductive load DC resistance speed tester, inductive load DC resistance fast tester, inductive load DC resistance tester

Product features
1. The DC resistance tester adopts a new power supply technology, which is fast to measure, compact in size, and easy to use;
2ZY-3A DC Resistance Tester (AC/DC)A large capacity CPU can store 255 sets of measurement results;
3. Adopting a typical four wire measurement method to improve the accuracy of measuring resistance (especially low resistance);
4. Equipped with a panel type micro printer, it can print measurement results in Chinese;
5. The stored results can be viewed and printed.

Reference standard for current selection in DC resistance testing:
Electrical equipment under 10000KVA can choose 2A/3A DC resistance tester
Electrical equipment within 31500KVA can choose a 5A DC resistance tester
Electrical equipment under 50000KVA can choose 10A DC resistance tester
Electrical equipment within 90000KVA can choose a 20A DC resistance tester
Electrical equipment within 120MVA can choose a 40A DC resistance tester

Product Parameters

Technical indicators and parameter notes for the project
Test current 1mA, 10mA, 1A, 5A, 10A
Measurement range 1mA: 1 μ Ω～ 20k Ω
10mA： 1μΩ～2kΩ
1A： 1μ Omega
5A： 1μ Omega
10A： 1μ Omega
Measurement accuracy ± 0.2% (full range)
Display mode: 128 × 64 dot matrix display, resistance displayed as 4 1/2 bits
High resolution 0.1 μ Ω
Power supply AC220V ± 22V, 50Hz ± 2Hz fuse tube 5A
When the high power consumption is 220W and the test current is 10A
working environment

Environmental temperature: 0 ℃~40 ℃; Relative humidity: ≤ 80% RH