Vibration of shaft

Motor will not start

Runs in slow speed

Over heating of motor

Super enamelled copper wire

PVC covered copper winding wire

Single cotton covered copper wire

Double cotton covered copper wire

Empire

Cotton

Bamboo

Terylene

Ground test

Polarity test

Open circuit test

Short circuit test

Generate maximum flux

Reduce the stray losses

Maintain the rotor speed constant

Produce more uniform rotor field and torque