Siemens SIMOTICS XP Series User Manual

Electrical connection
6.1 Connecting the machine
1MB..1/2/3/4 - shaft heights 63 ... 355
76 Operating Instructions, 06/2020, A5E44455710A
6.1.1.10 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
Ex tc
Ex tb
Ex nA
Ex ec
Ex e
Ex eb
≤ 250 V
3.0
2.5
5.0
≤ 500 V
3.0
5.0
8.0
≤ 630 V
5.5
5.5
10.0
≤ 1000 V
8.0
8.0
14.0
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.
6.1.1.11 Internal equipotential bonding
The internal equipotential bonding between the grounding terminal in the terminal box, the
terminal box components and the machine enclosure is ensured via metallic contact, a
copper braided strip or a stranded wire.
6.1.2 Cable glands
Cable glands with (sheet metal) nuts (EN 50262)
①
②
Nut
O ring

Siemens SIMOTICS XP Series Specifications

General

Brand	Siemens
Model	SIMOTICS XP Series
Category	Engine
Language	English