ETZZ-50A DC Resistance Tester

The DC resistance test of transformer windings is an essential test item for transformers after handover, major repairs, and changes to tap changers. The ETZZ-50A DC Resistance Rapid Tester adopts a new technology, which is compact in size, easy to use, and has high measurement accuracy. It is an ideal device for measuring the DC resistance of transformer windings and high-power inductive equipment. Standard support: GB6587-86, GB6593-86 use new power technology, stable performance, fast measurement, compact size, easy to use, high accuracy, good data repeatability

The DC resistance test of transformer windings is an essential test item for transformers after handover, major repairs, and changes to tap changers. According to the regulations, it is necessary to measure the DC resistance of transformer windings during transformer handover, major repairs, minor repairs, changes in tap positions, fault inspections, and pre testing. The purpose is to:

1. Check the welding quality of the internal wires and leads of the winding;

2. Check whether the contact of each position of the tap changer is good;

3. Check whether there are any broken parts in the winding or lead out wire;

4. Check the correctness of the parallel branch and whether there is a situation where the winding formed by several parallel wires has one or several broken wires;

5. Check for short circuits between layers and turns.

The ETZZ-50A DC Resistance Rapid Tester adopts a new power supply technology, which has the characteristics of fast measurement, small size, easy use, and high measurement accuracy. It is an ideal device for measuring the DC resistance of transformer windings and high-power inductance equipment.

The ETZZ-50A DC resistance rapid tester complies with the requirements of the national standards GB6587-86 "General Principles for Environmental Testing of Electronic Measuring Instruments" and GB6593-86 "Quality Calibration Rules for Electronic Instruments".