How to determine the connection scheme of the windings of an induction motor?
How to find out how the motor windings are connected (Star or delta), if only three wires are output. There is no nameplate on the engine. What voltage is also unknown. Thank.
Disassemble the motor and find the ends of the windings and where these 3 wires are connected. If the connection point of the two windings is a star, if to the ends of the windings, and their second ends are connected together and do not go anywhere - a triangle. What difference do you have? Connection according to one or another scheme does not mean the possibility of operation in a network with one voltage or another. There are "by star" work at 380, there are also "in the triangle" for the same voltage.
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