About Kingrun Winding Resistace Testers
JYR series transformer winding resistance testers, designed by Kingrun, are primarily used for measuring the winding resistance of power transformer and instrument transformer(CT/PT/CVT).
JYR series winding resistance testers incorporate high-precision multi-core CPU from ARM (Advanced RISC Machines, USA), achieving a measurement accuracy of 0.2% with a resolution of up to 0.01μΩ. The maximum test current reaches 50A, allowing measurements across a wide resistance range from 0~100kΩ. The testers also support multiple advanced functions, including automatic calculation of three-phase unbalance rate, compensation testing for HV side YN 3-phase simultaneously measuring, automatic selection of test current, demagnetization after testing, temperature conversion based on the specimen(AI/Cu), and auto-magnetization assistance. The S-series further enables simultaneous three-phase resistance measurement without the need for rewiring, additionally, the instrument supports multiple data export interfaces, including USB, Bluetooth, and RS485.
To ensure safety, the JYR series winding resistance testers are equipped with automatic discharge alerts, overheating alarms, AC 380V misconnection protection, and counter-electromotive force (CEMF) protection, effectively safeguarding the transformer, testing equipment, and on-site personnel.
Kingrun has developed various models to meet different customer requirements, for instance, the JYR-10S handheld winding resistance tester is designed for users with high testing workloads, weighing only 2kg and capable of measuring the DC resistance of hundreds of transformers on a single charge. The JYR-10C and JYR-10C+ models offer cost-effective and durable solutions for budget-conscious users, while the JYR-20W and JYR-40/50E can perform temperature rise (Heat-run) testing while measuring winding resistance
Renowned for their stability and durability, Kingrun’s transformer testing instruments serve global power enterprises, including Siemens, ABB, Hitachi, and Alcatel. Kingrun remains committed to advancing power and transformer testing technology, integrating these innovations into its product range to continuously provide customers with high-precision, high-performance testing instruments..
