Electrical connection
6.3 Tightening torques
1LE5, 1PC4 shaft height 315/355
66
Operating Instructions, 10/2020, A5E41454666A
6.2.2.7
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 gen-
eral use.
6.2.3
Screw-type connections with connecting thread
Cable glands with connecting thread in the terminal box (EN 50262)
②
O ring
6.3
Tightening torques
Note the information in Chapter Tightening torques (Page 125).
6.3.1
Cable entries, sealing plugs and thread adapters
Note the following when mounting:
•
Avoid damaging the cable jacket.
•
Adapt the tightening torques to the cable jacket materials.
