Resistance tester HZ-3110-I

stator windingfor transformersindustrial

Transformer DC resistance testing is essential during various stages of transformer manufacturing and maintenance, including factory testing of semi-finished and finished products, installation, overhaul, tap changer replacement, handover testing, and preventive maintenance in the power sector. This test helps evaluate the welding quality of winding joints, detect short circuits between turns, and verify the functionality of the voltage tap changer contacts. It also checks the alignment of the actual tap changer position with the indicated position, the integrity of lead wires, and the condition of multi-strand wires, including the detection of any breaks in the strands.The tester is controlled by a high-speed microprocessor, ensuring high automation with functions such as automatic discharge and discharge alarms. The instrument provides high test accuracy, is easy to operate, and allows for rapid measurement of transformer DC resistance, making it an indispensable tool for transformer testing. Main Technical Indicators To meet the need for fast and reliable DC resistance measurement in transformers, our company has developed a Hand-held DC Resistance Tester. The instrument incorporates advanced power supply technology and offers several key benefits: Compact design with small size and lightweight construction High output current and excellent repeatability Strong anti-interference ability for stable and reliable performance Perfect protection functions for enhanced safety during operation Conditions of Use： Ambient temperature: 0℃-40℃ Ambient humidity: ≤85%RH Working power: battery powered Power frequency: (50±1)Hz