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DV-Power TWR-H Handheld Transformer Turns Ratio and Winding Resistance Tester
Together with the turns ratio, the instrument also measures excitation current and phase shift. This enables detecting transformer core or winding turns failures which cannot be spotted by measuring turns ratio only. The instrument can output test voltage up to 40 V AC for this test, but it can also output a very low test voltage of 1 V AC which is necessary for turns ratio verification of the majority of current transformers.
TWR-H is powered by an internal Li-Ion battery. Up to 100 tests can be performed with a fully charged battery
Transformer Testers, Transformer Turns Ratio, Winding Resistance Meters & Tap Changer Analysers