240v supply and 208v motor
I have a question about connecting service to a bridgeport cnc mill.I have 120/240 single phase service from power company running through a 5HP phaseamatic rotary converter and want to connect to a 208 volt machine.I see that the transformers can be wired for 230 volts .What else needs attention? Motor? Motor contactors?Motor overload heaters?I thank You for any info that could be provided.I just registered onto this site recently and have been reading and learning from all the threads and responses.
240v supply and 208v motor
Scott and Al the Man thank You for your reply.I am looking to connect the mill to a 230v 3 phase line after it goes through a rotary phase converter.The transformers are in power distribution enclosure and supply power (110-120vac)to all systems except spindle motor.Jim
240v supply and 208v motor
Thank You for your response.I have reconfigured the transformers for 230-240v input and now am thinking about adding a 3 phase line monitor as added protection for the 208v motor.According to the description it will balance the phases at 2-4-6-8 or 10 % per a selector switch.I was also thinking that it would keep the DC voltage in the drive and controller circuit within specs if the AC voltage was as it should be then DC voltage would be also.???? Any Thoughts.Jim