what is the type of winding connection( star or delta) in
1HP to 5HP motors. How to check the motor winding
connections( star or delta) if not provided in the
nameplate?
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Answer Posted / karl
Most nameplates wont say whether to connect in Delta or
Star but will show a Delta symbol or star symbol with a
voltage rating of current rating next to them. Sometimes a
symbol not even shown but 2 levels or voltage and currents.
This is because this gives you 2 choices of voltages to
connect to. Example if you have a 415V three phase supply
and your motor nameplate shows 230V Delta and 400V Star you
should connect the motor in Star. If it just shows 400V
this usually means you connect it in Delta. If you
connected this motor in Star it would not give you full
output power. These motors sometimes use a star, delta
starter which when in star runs at lower start current.
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