KDZRS-20A is a professional three-phase DC resistance tester that can simultaneously measure all windings in a single connection. It features a 20A output current and a resolution of 0.0001μΩ, covering a measurement range of 250μΩ to 200Ω in single-phase/three-phase modes. The device has a one-time demagnetization function to eliminate residual magnetic fields and magnetic-assisted measurement capabilities for delta windings. A touchscreen interface, 500 data storage sets, and thermal printing capabilities allow it to provide comprehensive DC resistance analysis in a rugged 15kg chassis.

1. Complete DC resistance measurement of both high and low voltage windings in a single connection;
2. Simultaneously perform three-phase testing with a neutral point transformer, significantly saving measurement time;
3. Auxiliary magnetic method measurement of three-phase five-limb delta-connected low-voltage windings, offering fast testing speed;
4. One-time demagnetization function eliminates residual magnetism;
5. Wide resistance measurement range, high resolution (0.0001μΩ), and multiple current ranges available;
6. Comprehensive back EMF protection enhances safety;
7. Complete longitudinal DC resistance testing of on-load tap changers in one operation;
8. High measurement accuracy, anti-interference, shock resistant, and portable;
9. 5.0-inch 65K color touchscreen for intuitive operation;
10. Built-in large-capacity non-volatile memory, capable of storing 500 sets of data;
11. Built-in high-speed miniature thermal printer for on-site printing of measurement results;
12. Built-in high-precision clock for real-time time display;
13. Supports USB storage function for convenient data export.