DSrader
Member
- Location
- Hutchinson, KS
- Occupation
- HVAC technician
I have an RTU rated for 208 V 3 phase being fed 240 V 3 phase with 2 compressors, both are showing unbalanced current draw. One is reading 30-31 amps on L1 and L3, 41 amps on L2, the other is 51 amps on L1 and L3, 71 amps on L2. My first thought was motor windings, but highly unlikely that both would have the same problem. I've never had issues this severe before, and I know there would be no wild leg on a Y wound transformer, which I think is common for 208V, but even on a delta wound transformer I've never seen where a wild leg causes current unbalance. The voltage reads 241V to 243V across on all 3 legs. Is there something I'm missing here?
One more thing, this Mfr. makes distinct units for either 208V or 240V, not both.
One more thing, this Mfr. makes distinct units for either 208V or 240V, not both.