The RCZL-20S three-loop DC resistance tester is an upgraded product, with great improvements in circuit structure and manufacturing technology, and is mainly designed for large-scale transformer DC resistance measurement. This machine adopts high-efficiency program-controlled current source technology and multi-module network structure. It has the characteristics of high accuracy, wide measurement range, stable data, good repeatability, strong anti-interference ability, perfect protection function, fast charging and discharging speed, etc. It can be synchronized with three loops. The measurement simultaneously displays and automatically calculates the unbalance rate. It has advanced functions such as magnetic measurement, intelligent demagnetization, etc., especially for the measurement of the DC resistance of large multi-tap transformers, which can greatly shorten the measurement time and improve work efficiency.
Main technical indicators and conditions of use
1. Technical indicators
1) Test current:
Three-phase test: 20A＋20A, 10A＋10A, 5A＋5A, 1A＋1A
Phase separation test: 40A, 20A, 10A, 5A, 1A, 0.2A
2) Test range: 40A: 100.0uΩ ~ 0.5Ω
20A: 500.0uΩ ~ 1Ω
10A: 1mΩ ~ 2Ω
5A: 10mΩ ~ 4Ω
1A: 100mΩ ~ 20Ω
0.2A: 1Ω ~ 100Ω
20A+20A 200uΩ ~ 0.3Ω
10A+10A 500uΩ~0.6Ω
5A+5A 10mΩ ~ 1.5Ω
1A+1A 100mΩ ~7Ω
3) The highest resolution: 0.1uΩ
4) Accuracy: ±(reading×0.2%+2 words)
5) Dimensions: 430mm×320mm×230mm
6) Weight: 12kg
2. Conditions of use
1) Ambient temperature: -10℃ ～ 50℃ Ambient humidity: ≤ 85%RH
2) Power supply: AC220V ± 10% Power frequency: (50 ± 1) Hz
main feature
Connect the high and low voltage current potential test wires to the transformer at one time, and there is no need to reverse the test wires during the test;
For the winding test of star connection, the instrument can test the resistance of A0, B0, C0 phases by means of three simultaneous tests, saving test time;
When testing the low voltage of the three-phase five-column low-voltage internal corner-connected transformer, the automatic magnetic assist method is used inside the instrument, which is faster than the direct high-current test;
Display and print all the test data of the transformer's high, medium and low voltage windings, and automatically calculate the three-phase unbalance degree, and can also print the resistance value converted to the rated temperature;
In the three-phase test, test the data of A0 first, and then test at the same time, which solves the problem that the resistance of the neutral point lead wire cannot be tested when the test is at the same time, and the test data is closer to the single-phase test value;
It has a perfect back-EMF protection function;
The instrument can store 200 pieces of test data permanently (expandable), and it can also use the USB flash drive to store the data to facilitate the user to import it into the computer for processing;
The instrument has the characteristics of wide applicable temperature, high accuracy, shockproof, anti-interference, and easy to carry.
Mobile version
15388193573
