Servo motors

[lilsparky]

Good morning,
I have 3, 3 phase 480v servo motors. one at 2kw and two at 3kw. I have never worked with servos before and was wondering do I treat them the same as other motors, as far as sizing the feeders? I looked at the NEC section 430 and am not sure whether any of those sections apply to servo motors.

The nameplate data gives continous amps, i.e. 2 kw is 6.7a. Do I run with that or go to table 430.250? I'm lost on where these motors fit?

Any guidance?

Thanks!

 

[mike_kilroy]

i believe code for feed sizes relates to the drive not the motor. you need to list the details on the drives like voltage, current input, are all 3 to be fed separately or off a common point you then want to feed. details details.....

 

[lilsparky]

Ok here's the info straight from the vendo catalog. The instrumentation guy has specified Omron three phase 400v drives. This is how it's listed for the models he specified:

Max. applicable motor capacity 2KW, 3KW
Continuous output current Arms 6.7, 9.4
input power main circuit 3-phase 380 to 480 VAC +10 to -15% (50/60 hz)
supply control circuit 24vdc +/- 15%

To answer your question on how I want to feed them - I would like to bring one feed from the MCC (480V) to a common pt (jb) then split off and feed each servo separately.