I do not know what your background is, but I can tell what it is not by your posts in this thread. Your answer doesn't really make any sense. It's a moot point anyways, the OP doesn't want to rewire the saw, he wants to use a transformer. I was just pointing out another option for him.
Steve in SoCal's comment and Norcal's comment, both below, affirm what i said. U still think i dont know what Im talking about? Your lack of knowledge on the subject shows for itself...my answer doesnt make sense? How so? 220v is a 50hz supply voltage and doesnt exist in the US , which has 60hz supply, nor can a transformer change cycles. The OPs motor, while saying 220v, is rated for 60hz supply and therefore should be supplied with 240v Delta 3 phase power...I rest my case...
I have the same series saw, mine is plated as 220 volts and it is wired to my 240 high leg delta. I have 480 power and wanted to wire it for higher voltage IE 480, the welder is the real issue. According to DoAll the welders on these saws were single voltage, an external transformer is needed to use it on 480. You need to size the transformer for three times the 8 KVa rating of the welder. As mentioned you will have to change the heaters or overloads on the saw and coolant motor starters A few KVa 480:240 X-former is not too pricy, shipping is another story!
Steve
So weird that DoAll wouldnt use a 220/440 dual voltage motor... Also the saw has a welder?
Anyways I would just get a step down xformer. I mean how much KVA is that saw really going to use?
Also what is the guy talking about with the 220v 50hz stuff?
220 volts is a 50 hertz voltage, but the OP's saw has a motor when 3 phase motors were rated 220/440V but the US had long ceased using those voltages.
3- single phase transformers could be used to step down the voltage.
Ok so heres the deal the schematics from DoAll cost $62.02 pr page!!!!
The saw has an 110 outlet and a 240 single phase welder so there is a lot of transformers and junk in there. The saw came out of a trade school and hardly any hrs on it so I really don`t want to change out any of the internals.
I`ll be the first to admit to being baffeled by all that's going on it the saw.
But if it`s as simple as what as what A_Pmech says that would be great.
Model 1612-3 Ser# 152 701057 Electrical schematic No. 56933-4
The only transformer that would be needed, if supplied by 4-wire 240v Delta, is a control transformer, IF the coil in the starter is rated for something other than line voltage.
If no neutral is supplied to the unit, then a transformer would be needed for the 120v outlet BUT NOT the welder as the welder would use 2 of the 3 phase legs for power.
If ur gonna use a step down transformer, i would look at th wiring and see if u can feed it with 4-wire delta, eliminating the need for a 120v transformer...
