The DC resistance tester for transformer windings is an essential test item for transformers after handover, major repair, and tap changer changes.DC digital microammeter is mainlyused to measure DC leakage current or conductance current value, with high accuracy, wide range, direct reading, digital display, and convenient use. It is impact-resistant, has automatic over-range protection, and polarity indication. The "Regulations" stipulate that during transformer handover, major repair, minor repair, tap position changes, fault inspection, and preventive tests, the DC resistance of transformer windings must be measured. The purposes are:
1. Check the welding quality of internal wires and leads in the winding;
2. Check whether the contact at each position of the tap changer is good;
3. Check whether there are any broken points in the winding or leads;
4. Check the correctness of parallel branches, whether there is a situation where one or more breaks occur in a winding made of several parallel wires;
5. Check whether there is any short circuit between layers and turns.
The YTC316-50 DC resistance tester adopts brand-new power supply technology, featuring fast measurement, compact size, convenient use, and high measurement accuracy. It is an ideal device for measuring the DC resistance of transformer windings and high-power inductive equipment.
This product complies with the requirements of national standards GB6587-86 "General Outline for Environmental Testing of Electronic Measuring Instruments" and GB6593-86 "Quality Inspection Rules for Electronic Instruments".
Product features:
1. Compact and lightweight, easy to carry, fast test speed.
2. Test current: 2.5A 5A 10A 20A 50A
3. Uses high-quality imported components, software design with multiple anti-interference programs, high measurement accuracy, and good repeatability.
4. Can store 255 test data. The stored data will not be lost even when the instrument is reset or powered off, and all stored test data can be printed, making it convenient to use.
5. LCD display, suitable for various working environments.
