Demo Video:

JYR-10S/20S/40S/50S adopts third-generation constant current source technology, with a maximum output current of 50A (40A), a range of 0Ω to 20kΩ, and an output voltage of up to 24V. It features a built-in channel conversion matrix. With the JYR40S/50S, various tests on power transformers can be performed without rewiring. The instrument can complete three-phase simultaneous tests, phase-by-phase tests, magnetic assistance tests, and single-phase DC winding resistance tests.

The JYR40S/50S three-phase winding resistance tester supports routine and diagnostic testing for power transformers of all levels. It is also suitable for factory laboratory and acceptance (FAT) testing.

Function Introduction:

● The output current can be set and also can be selected as per the resistance of the tested product automaticly.

● High Voltage YN Three-Phase Simultaneous Testing: Includes compensation testing (including O phase resistance) and phase-by-phase testing functions. Features automatic magnetization assistance for YND11 transformers, high and low voltage D/Y three-phase phase selection measurement, and automatic calculation of the three-phase resistance balance rate for high voltage.

● Measuring range: 0～20kΩ, the instrument can measure the DC resistance of the inductive products such as the transformers and instrument transformers.

● Auxiliary judgment of data stabilizing function. Automatically calculate the percentage deviation of resistance value of 5s, 15s and 30s, accurately determine the reliability of data, and prevent misreading data.

● The temperature conversion can be made according to the material(Copper/Aluminum) of the tested products, so that it is convenient to compare with the historical data.

● With transformer demagnetization function, it can reduce residual magnetism of transformer.

● With a permanent calendar, 99 sets of data storage, Chinese and English interface selection function, power failure without data loosing, mini printer and U disk interface.

● With 6 inch color touch LCD display screen.

● Dual RS485 (RS232) communication interface, with PC control software, the instrument can realize remote control measuring.The instrument can be fitted with an optional built-in bluetooth module to achieve bluetooth wireless communication.

● With the discharging alarm by sound and the discharging indicating clearly function, the misoperation can be reduced.

● With AC380V misconnection protection function,perfect back EMF protection function and anti-arcing function.

● It has the features of dustproof, shockproof, moistureproof, high precision, good repeatability and portability.

Technical specification