28 l
Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical 11371757
4.7.2.2
Connection diagrams according to NEMA MG1
4.7.2.2.1
Stator connection diagrams
3 TERMINALS
6 TERMINALS
6 TERMINALS - DAHLANDER
Δ Y
Δ
LOWER SPEED
YY
HIGHER
SPEED
Y
LOWER
SPEED
YY
LOWER
SPEED
Δ
HIGHER
SPEED
3 TER
NEUTRAL
9 TERMINALS
12 TERMINALS
ΔΔ
Δ
YY
Y
ΔΔ
YY
Δ
Y
12 TERMINALS -
(part winding)
FOR Y START
FOR Δ START
Y FOR START
ONLY
FOR RATED SPEED
NOTE
When two or more motor connecting cables are used in parallel in
order to divide the electric current, the identification of these cables is
made with an additional suffix separated by a hyphen, according to
Figure 4.9: Parallel connections
4.7.2.3
Rotation direction
The rotation direction is indicated on the nameplate and must be observed looking to the shaft end at the motor drive
end. The rotation direction must be checked before coupling the motor to the driven machine;
Motors with terminal identification and connections as described in this manual have clockwise rotation direction,
according to IEC60034-8 standard;
In order to invert the rotation direction, it is necessary to swap any two phases;
Motors with a single rotation direction, as indicated on the nameplate and on sign plate affixed to the frame, have
unidirectional fan and must be operated only in the specified rotation direction. In order to invert the rotation direction of
unidirectional motors, consult WEG.
4.7.2.4
Accessory connection diagrams
For the correct installation of the accessories, refer to the drawing in the specific CONNECTION DIAGRAM of the motor.
