Siemens SIMOTICS SD SH 71 315 Series, Руководство по эксплуатации

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Electrical connection
6.3 Connecting the motor
1LE7 shaft heights 71 ... 315
62
Operating Instructions, 04/2022, A5E51689275A-AA
CAUTION
Damage to connecting cables that are freely led out
You must observe the following note to avoid damaging connecting cables that are freely
led out:
•
It must be ensured that there are no foreign bodies, dirt, or moisture in the terminal base
of the motor enclosure.
• Use O-rings or suitable flat gaskets to seal entries in cover plates (DIN 42925) and other
open entries.
• Seal the terminal base of the motor enclosure using the original seal of the cover plate to
prevent dust and water from entering.
• Please observe the tightening torques for cable entries and other screws.
6.3.1.7 Connecting protruding cables
In the case of connection cables brought out of the motor, no terminal board is installed on
the terminal base of the motor housing. The connection cables are directly connected to
stator winding terminals at the factory.
The connection cables are color-coded or labeled. The customer directly connects individual
cables in the control cabinet for their system in accordance with the labeling.
6.3.1.8 Minimum air clearances
After proper installation, verify that the minimum air clearances between non-insulated parts
are maintained. Be aware of any protruding wire ends.
Table 6- 2 Minimum air clearance dependent on rms value of the alternating voltage U
rms
Rms value of the alternating voltage U
rms
Minimum air clearance
mm
≤ 250 V 3.0
≤ 500 V 3.0
≤ 630 V 5.5
≤ 1000 V 8.0
Values apply at an installation altitude of up to 2000 m.
When determining the required minimum air clearance, the voltage value in the table may be in-
creased by a factor of 1.1, so that the rated input voltage range is taken into account during general
use.