12 Lead Motor Conection

12 Lead Motor Connection Diagram
For Most 12 Lead Motors

If used on a standard across the line starter, soft start or variable frequency drive, thesemotors should be wired in the delta (RUN) connection for either high voltage (480V) or low voltage (240V). The only time you should use the wye connection is awye-delta starter. The final connection of the motor is ultimately the responsibility of the installing electrician. If he has any questions, he shouldcontact his nearest motor specialist prior to energization.

NEMA Standard Diagram for 12 Lead Motors

DUAL VOLTAGE
WYE-CONNECTED START
DELTA-CONNECTEDRUN
VOLTAGE CONN. L1 L2 L3 JOIN
HIGH WYE 1 2 3 4&7. 5&8, 6&9, 10&11&12
DELTA 1, 12 2,10 3,11 4&7. 5&8, 6&9
LOW WYE 1,7 2,8 3,9 4&5&6,10&11&12
DELTA1,6,7,12 2,4,8,10 3,5,9,11 ---

NEMA Standard Diagram for 6 Lead Motors


SINGLE VOLTAGE
EXTERNAL
Y-CONNECTION
L1 L2 L3 JOIN
1 2 3 4&5&6


SINGLEVOLTAGE
EXTERNAL
DELTA-CONNECTION
L1 L2 L3 JOIN
1,6 2,4 3,5 4&5&6



SINGLE AND DUAL VOLTAGE
STAR-DELTA CONNECTIONS
SINGLE VOLTAGE Y-CONNECTEDSTART
DELTA CONNECTED RUN
DUAL VOLTAGE Y-DELTA-CONNECTED
(VOLTAGE RATIO 1.732 to 1)

CONN. L1 L2 L3 JOIN
Y START OR HIGH VOLTAGE 1 2 3 4&5&6
DELTARUN OR LOW VOLTAGE 1, 6 2,4 3,5 --- ---

NEMA Standard Diagram for 9 Lead Motors


DUALVOLTAGE
Y-CONNECTED
VOLTAGE L1 L2 L3 JOIN
LOW 1,7 2,8 3,94&5&6
HIGH 1,6 2,4 3,5 --- ---




DUALVOLTAGE
DELTA-CONNECTED
VOLTAGE L1 L2 L3 JOIN
LOW 1,6,7 2,4,8 3,5,9 --- ---
HIGH 1 2 3 4&7. 5&8, 6&9