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Line feeder cables
Terminal connec‐
tion
Terminal connec‐
tion
Direction of rotation of the motor when viewing the DE
6.1.4.3
Terminal marking
According to IEC / EN 60034‑8, the following basic definitions apply to the terminal markings for
3-phase machines:
Table 6-1
1
x
6.1.4.4
Additional bores in the terminal box
Additional bores in the terminal box must be drilled by the manufacturer or by a specialist
workshop for electrical machinery that has been authorized by the manufacturer.
6.1.4.5
Cable entry
Certified cable entries, thread adapters and sealing plugs
Only use sealing plugs, cable glands and conductor glands or thread adapters that are suitable,
certified and marked for use in the respective explosion protection type and degree of protection
(IEC / EN 60079-14) or the appropriate country regulations.
Terminal box
The number and size of the cable entry tapped holes is provided in the machine dimension
drawing.
1MB..1/2/3/4 - shaft heights 63 ... 355
Operating Instructions, 11/2023, A5E52779900A
Direction of ro‐
tation
-
Clockwise ro‐
tation
Counter-clock‐
wise rotation
Terminal markings using the 1U1-1 as an example
U
1
-
1 Marking
Code for split winding, where applicable. Special case for pole assignment for pole-
changing machines.
A lower index signifies a lower speed.
x
Phase designation U, V, W
x
Index for winding start (1) or end (2) or if there is more than one connection per
winding
x Additional indices for cases in which it is obligatory to connect parallel power feed
cables to several terminals with otherwise identical markings
According to IEC
L1 L2 L3
U V W
V U W
Electrical connection
6.1 Connecting the machine
According to NEMA
L1 L2 L3
T1 T2 T3
T2 T1 T3
81
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