See also
Protruding connection cables (Page 52)
6.1.2.7
Connection with/without cable lugs
In the case of terminals with terminal clamps, distribute the conductors in such a way that the
clamping heights on both sides of the fillet are about the same. This method of connection
requires that you must bend a single conductor in a U shape or use a cable lug. The same
applies to the inner and outer terminals of the ground conductor.
When connecting up using cable lugs, select their size corresponding to the required cable
cross-section and the stud size. An inclined arrangement is only permitted provided the
required air clearances and creepage distances are carefully maintained.
Remove insulation from the ends of the conductors so that the remaining insulation almost
reaches the cable lug.
Note
The direct contact between the cable lug surfaces and the contact nuts or contact screws
ensure that the connection can conduct current.
Screw the screw-type connection into the housing or fasten with a nut.
Note
The screw-type connections must have been matched to the connecting cables used (diameter
armoring, braid, shield).
For the screw-type connections, comply or exceed the requirements relating to IP degree of
protection (water and dust) - as well as the temperature range in operation stamped on the
rating plate.
6.1.2.8
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 increased
by a factor of 1.1, so that the rated input voltage range is taken into account during general use.
Electrical connection
6.1 Connecting the machine
1PC134, 1PC136 crane motors SH 132 ... 315
Operating Instructions, 02/2019, A5E43212221A
53
