moonshineJ
Member
- Location
- USA
Recently I saw two smaller size (about 2-5 kVA) single-phase 208/36 VAC transformers connected to three-phase 208 VAC line, which supplies 10 HP motor controller. Would it be some sort of a filter for the cancellation of triplen harmonics? What puzzles me, why only two transformers used, not three. How they would be connected? I assume the 36 VAC secondaries are not in use.