Operating Instructions – Explosion-Proof AC Motors – DRS/DRE/DRP 315
35
9
Wiring diagrams
Appendix
9
Appendix
9.1
Wiring diagrams
9.1.1
Delta and star connection
AC motor
For all motors with single speed, direct switching-on, or
startup
connection
The following figures shows the
connection for low voltages
connection
The following figure shows the
connection for high voltages
Change in direction of rotation: Exchanging of two incoming cables (L1 - L2)
NOTE
The motor must only ever be connected as shown in the wiring diagram or terminal as-
signment diagram included with the motor. The following section merely contains a se-
lection of the most common connection variants. You can obtain the applicable wiring
diagrams from SEW-EURODRIVE free of charge.
[1] Motor winding
[2] Motor terminal board
[3] Incoming cables
V1
U1
W1
[1]
V2
U2
W2
W2
U2
V1
U1
V2
W1
L2
L1
L3
[2]
[3]
[1] Motor winding
[2] Motor terminal board
[3] Incoming cables
V1
U1
W1
[1]
V2
U2
W2
W2
U2
V2
[2]
[3]
W1
V1
U1
L3
L2
L1
P
i
f
kVA
Hz
n
