DA72
Member
- Location
- Gibbstown NJ
We got a replacement for a 9 wire squirrel cage motor 20 hp 480 volts(L1-1,L2-2,L3-3,4-7,5-8-6-9). US motors sent a replacement motor that is a 12 split wire wye start/ delta run. We do not have the capabilities at motor starter to wire this start/ run configuration. At first we wired it wye start, motor draw continuous 32 amps, well above FLA of motor. Which I now read improper hook up. Reading online (http://rammotors.com/Tech Tips/Wye Start - Delta Run 101/index1.htm).
Changed wiring to delta run, (L1-1-12,L2-2-10,L3-3-11,4-7,5-8,6-9). Upon starting amp draw is 150 amps drifting down to 19.8 amps after reaching full rpms 10-15 seconds.
My questions: Is a 12 split wire wye start/delta run motor a feasible replacement for a 9 wire wye delta motor?
Or will the High amp draw upon startup damage this motor after time?
If so is there a better wiring configuration?
Changed wiring to delta run, (L1-1-12,L2-2-10,L3-3-11,4-7,5-8,6-9). Upon starting amp draw is 150 amps drifting down to 19.8 amps after reaching full rpms 10-15 seconds.
My questions: Is a 12 split wire wye start/delta run motor a feasible replacement for a 9 wire wye delta motor?
Or will the High amp draw upon startup damage this motor after time?
If so is there a better wiring configuration?