vfd
vfd
(OP)
Can a 6 lead motor used from an old wye - delta starter be wired to a VFD, and how would you wire it. (nameplate data 60hp, 460 volt, 3 phase. lead #'s 1,2,3,7,8,9
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RE: vfd
RE: vfd
"..(nameplate data 60hp, 460 volt, 3 phase. lead #'s 1,2,3,7,8,9)"
Tap your motor to VFD as DELTA connection as line1(1&6); line2(2&4); line3(3&5).
In your case; i think it's not 7,8,9; it should be 4,5,6 for a motor having 6 leads out.
A posible drawback when using VFD, the motor winding insulation might not sustain the harshness of harmonic effect produced by VFD itself. Consequently, the winding coating will erroded and will build up tiny pinholes to the extent the coating will detach to the winding and lead to interturn short-circuit faults,etc.