SIEMENS
11/12
Siemens MD 50.1 · 2015
Motor options
Mechanical design
Motor connection and terminal boxes
11
■
Connection, circuit and terminal boxes
(continued)
Motor connection Y
Fig. 11/12
Connection circuit diagram, motor connection Y
Motor connection YY/Y
Fig. 11/13
Connection circuit diagram, motor connection YY/Y
Terminal connection
The terminal board accommodates the terminals that are
connected to the leads to the motor windings.
The terminals are designed so that up to size 160, the external
(line) connections can be established without requiring cable
lugs.
Cable entries
G_D087_EN_00044
T1 = U1
T2 = V1
T3 = W1
T4 = U2
T5 = V2
T6 = W2
T1 = U
T2 = V
T3 = W
U
L3
L2
L1
PE
[U2,V2,W2]
V
W
3
U
V
W
PE
M
U
W
V
-M
-M
U1
W2
U2
V2
W1
V1
U2
W2
V2
U1
W1
V1
-M
U
W
V
-M
U1
W1
V1
U2
W2
V2
U3
W3
V3
-M
U
W
V
=
T1
U1
=
T2
V1
=
T3
W1
=
=
T4
T7
U2
U3
=
=
T5
T8
V2
V3
=
=
T6
T9
W2
W3
=
T1
U
=
T2
V
=
T3
W
=
T1
U
=
T2
V
=
T3
W
U
L3
L2
L1
PE
[U2,V2,W2];
[W1,W3]
[V1,V3];
[U1,U3];
V
W
U
L3
L2
L1
PE
[V2,V3];
[U2,U3];
[W2,W3]
V
W
U1
V1
W1 PE
U2
V2
W2
U3
V3
W3
3
M
3
U
V
W
PE
M
PE
U
V
W
3
M
U1
U2
U3
W3
W2
V1
V3
W1
V2
Motor size
Number of cable entries
Terminal box material
Line feeder cable connection
63
...
160
2 cable entries incl. screw plugs
Aluminum alloy
With or without cable lug
180
...
250
2 cable entries incl. screw plugs
Cast iron
With cable lug
© Siemens AG 2015