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  » Products » Valiadis Motors » General Information » Connecting Diagrams
Connecting Diagrams
General Information

Y or Star connection

 

 

 

 

Connecting together the W2, U2, V2 terminals (star point) and connecting to the mains the U1, V1, W1 terminals a star connection is obtained.

The phase current Iph and the phase voltage Vph are as following:

 

Iph = In
Vph = Vn/3

 

Where:

 

In:   the line current
Vn:   the line voltage

 

Δ or Delta connection

Connecting the end of each winding to the beginning of the next winding a delta connection is obtained.
The phase current Iph and the phase voltage Vph are as following:

 

Iph=In/3
Vph= Vn

 

Star-Delta starting

 

The star-delta starting is an easy way to reduce the starting current and starting torque.
Motors can be started with the star-delta method only when the supply voltage corresponds to the rated voltage of the motors in delta connection.

 

 

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