Overview of DC Resistance Tester for Transformer Windings

 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 mainly used to measure DC leakage current or conductance current value, with high precision, wide range, intuitive reading, digital display, and easy to use. It has impact resistance, automatic protection against over-range, and polarity display. The "Regulations" stipulate that during transformer handover, major repair, minor repair, tap position changes, fault inspection, and pre-testing, the DC resistance of transformer windings must be measured, with the purpose of:

    1. Check the welding quality of internal conductors 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 a winding made of several parallel conductors has one or more broken wires;

    5. Check whether there is any short circuit between layers and turns.

    The YTC316-50 DC resistance tester adopts new power supply technology, featuring fast measurement, compact size, easy operation, 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. Lightweight and portable, with fast testing speed.

    2. Test current: 2.5A 5A 10A 20A 50A

    3. Uses high-quality imported components and software design with multiple anti-interference programs, ensuring high measurement accuracy and good repeatability.

    4. Can store 255 test data records. The stored data will not be lost even when the instrument is reset or powered off, and all stored test data can be printed for convenience.

    5. LCD display mode, suitable for various working environments.