HVRW310 Transformer Winding Resistance and Turn Ratio Test unit is used for a Transformer DC Resistance Test and Transformer Ratio Group Test during a maintenance outage.
Because of the different test methods often two instruments are needed and it is necessary to do two tests separately and two connections and disconnect, which will greatly reduce the work efficiency and increase testing time.
The transformer DC resistance ratio tester solves the above problems. One instrument can carry out two tests: DC resistance test and ratio test. The unit with its intuitive operation, completes threephase direct resistance test and three-phase ratio test at one time, and performs the testing quickly and with high accuracy.
DC Resistance and Variable Ratio Testing Function: Simultaneously, it has DC resistance testing and Variable Ratio Group testing functions, one wiring, two different tests, simple and convenient.
Variable Ratio Testing: It has three-phase sinusoidal inverter output, output voltage automatic regulation, soft start and soft stop functions, so the testing speed is quick and easy and increased accuracy
Variable ratio test: three-phase transformer, singlephase transformer, PT, variable ratio, group, polarity test function.
Variable ratio test: it has blind test function, that is, variable ratio and group test is conducted when the connection mode of high and low voltage is unknown.
Variable ratio test: CT variable ratio polarity test function.
Variable ratio test: single phase test with Angle difference test
Variable ratio test: tap-tap position up to 197.
Variable ratio test: the test range is wide, up to 10000.
Variable ratio test: high and low voltage reverse connection protection function.
Variable ratio test: output short circuit protection function.
DC resistance test: for the winding test with star connection and neutral lead wire, three-phase simultaneous measurement to test the resistance of A0, B0 and C0 phases.
