02-18-2015, 06:56 AM
its wire as Star or Y in other places
so its connected for the higher voltage on the name plate
but someone has been messing with that block it not wired as it should be
W1 V2
U1 W2
V1 U2
for star you link vertical v2 w2 u2 with the mains on w1 u1 v1
for delta you remove the links and place the ink horizontaly w1 v2 u1 w2 v1 u2 with the main still on w1 u1 and v1
the offset on the numbers allow simple linking because each winding is w1 start and w2 end and so on
that motor will not be able to be wire for 220vac so a VFD is out without transformers
a phase converter with transformer would work
also the age of that motor make running on a VFD dodgy they were not designed for variable frequecy use its down to the insulation and iron to copper ratio
IMHO if you want to go VFD then get a package deal, motor and VFD from the same supplier ( often they will program the unit for you )
Stuart
so its connected for the higher voltage on the name plate
but someone has been messing with that block it not wired as it should be
W1 V2
U1 W2
V1 U2
for star you link vertical v2 w2 u2 with the mains on w1 u1 v1
for delta you remove the links and place the ink horizontaly w1 v2 u1 w2 v1 u2 with the main still on w1 u1 and v1
the offset on the numbers allow simple linking because each winding is w1 start and w2 end and so on
that motor will not be able to be wire for 220vac so a VFD is out without transformers
a phase converter with transformer would work
also the age of that motor make running on a VFD dodgy they were not designed for variable frequecy use its down to the insulation and iron to copper ratio
IMHO if you want to go VFD then get a package deal, motor and VFD from the same supplier ( often they will program the unit for you )
Stuart
Lordedmond, proud to be a member of MetalworkingFun Forum since Jul 2013.