I have a 90VDC motor with no tag. The motor is attached to a gear box. The motor has 5 wires. 3 of these wires are 18AWG and one of the 18AWG is green ground. I can operate the motor by applying 90VDC to the other 2 18AWG wires and can reverse the rotation by changing polarity on these 2 18AWG wires. There are 2 22AWG wires that are not being used. The motor is used in a low horse power application for long time periods. Is there a way that I can determine whether this motor is:
- Permanent magnet
- Series wound
- Shunt wound.
Are shunt connections typically smaller wires than those used to connect to the armature?