Siemens SIMOTICS FD 1LL1, Инструкция по эксплуатации и установке

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WARNING
Explosion hazard if cable lugs without side guards are used
For cable cross-sections under 70 mm
2
, cable lugs without side guard may twist. The
minimum air clearances may be underrun and cause an explosion.
This can result in death, serious injury, or material damage.
● For cable cross-sections under 70 mm
2
, use only cable lugs with side guard.
● Make sure that the minimum air clearances (Page 100) are observed.
6.5.6 Connecting cables without cable lugs
Lug terminal connections - which are suitable for connecting flexible and stranded conductors
without the use of wire end ferrules - may be installed if ordered accordingly. If you wish to
use wire end ferrules, then before connecting the cable, attach these so as to form a technically
correct, current-carrying crimped joint at the end of the conductor.
NOTICE
Overheating of the conductor ends
If the end of the conductor is not correctly enclosed by the wire end ferrule, but is trapped by
it, this can lead to overheating.
● Insert only one conductor end into each wire end ferrule, and attach the wire end ferrule
correctly.
● Insert only one conductor end into each terminal.
Procedure
Ensure that the minimum air clearances and the creepage distance are maintained for the
connection.
1. Open the terminal box and cut the cable to the correct length.
The clips of the 1XB7730/1XB7731 terminal boxes can accept cables with maximum
185 mm² cross-section.
2. Prepare the end of the cable depending on the cable and its use. Make sure that no external
forces are acting on the cable connection.
3. Insulate the conductor ends in such a way that the remaining insulation reaches almost up
to the cable lug.
Electrical connection
6.5 Inserting and routing the cables
SIMOTICS FD 1MH1
96
Operating Instructions 08/2017