Motor Auto transformer

[Mabongi]

Good day everyone

I would like to know different types of tests you can do on a Motor auto transformer

Regards

[randyw8483]

Good day everyone

I would like to know different types of tests you can do on a Motor auto transformer

Regards

Hi Mabongi,

Three Phase TTR
Winding Resistance
Single Power Factor (Winding to Ground)
Polarization Index (w/ Megger) or just Megger the windings to ground.

Out of all of these, the Megger, TTR and Winding Resistance are most important.