Let's say your TTR test set in the field breaks and you don't have a spare but you have a variac and VOM in the truck and plenty of wire.
Is it possible to use excitation current using a Variac and a VOM with calculator to measure TTR without a Turns to Turns Ratio Tester or would you need a Ratio Meter or TTR tester in order to perform a TTR test?
For example with a Y to Delta transformer
12470V to 480 with 30 degree angular displacement. Let's say 25.9 Nameplate ratio and 7200/480 = 15:1 wye primary L-N to Delta secondary L-L. and nampleate voltage ratio of 25.9/1.73 = 15:1
Is it possible to measure TTR w/o a TTR test set? If so, how?
Excitation Current and TTR Testing
Re: Excitation Current and TTR Testing
