It is like a simple thing and not so important BUT if we make a mistake about electric motor voltage power supply,it can cause the winding damage and burn out.That why i would like to share about this information to avoid serious damage for electric motor.
The reason why motor manufacture design dual voltage is to make this motor available for any country used because every country have a different voltage value such as 200 VAC,600 VAC and 415 VAC.It also so for marketing strategy to increase their profit margin.
What is dual voltage for electric motor?
Below figure is a electric motor name plate that have a dual voltage.If we can see,it have two connection motor terminal for two voltage for power supply.
- DELTA : 220 ~ 240 VAC – 3 PHASE
- STAR : 380 ~ 415 VAC – 3 PHASE
From this information,i hope it can make a clear view how this motor works,terminal connection and value of voltage.So the conclusion from this information :-
- If our power supply is a 220 Volt, 3 phase,we should connected the power supply in DELTA.But please understand the meaning is we does not connected the motor with a single phase power supply!!!!
- If your power supply is 415 volt,3 phase,we should externally be connected the power supply for electric motor in STAR.