GDZRS-20A Winding Resistance Tester(Three-phase)

General Information

GDZRS series Winding DC resistance tester is optimal designed for measuring three phase winding DC resistance of big capacity transformer. It can test three phase winding DC resistances at the same time.

Features

For on-load variable transformer,no need to discharge,just adjust tap switch directly;
The measurement time is 1/3 of tradition single phase measurement,that working time and labor intensity is shorten;
Big screen LCD display,clear and visual,easy operation;
Built-in panel printer and big capacity memory, easy to get printing result and convenient to storage data;
Stable data,fast testing and good repeatability,suitable for transformer DC resistance on-site measurement.

Specifications

Current	Single phase:1A 5A 10A 20A 40A Three phase:1A 5A 10A 20A
Range	Single phase: 1A 10mΩ～20Ω 5A 1mΩ～4Ω 10A 1mΩ～2Ω 20A 1mΩ～1Ω 40A 1mΩ～0.5Ω Three phase: 1A 10mΩ～6Ω (per phase) 5A 1mΩ～1Ω(per phase) 10A 1mΩ～0.6Ω(per phase) 20A 1mΩ～0.3Ω(per phase)
accuracy	±0.2%(full range)
Max.resolution	0.1μΩ
Data saving capacity	150 group
Power supply	AC 220V±22V，50Hz±2 Hz
Working environment	Environment temperature:0-40℃ Relative humidity: ≤80%