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Installation
7
Installation
During installation, adhere to the national standards as well as the generally recognised
technical regulations (in addition to information pertaining to the terminals contained in the
technical data).
Disconnect the power supply before opening the device!
7.1 Mains connection
Ensure that the maximum permissible conductor temperatures are not exceeded by se-
lecting suitable cables and a suitable means of running them.
Particular care should be taken when making the connections.
Please observe:
- that the wiring insulation must extend all the way to the terminal.
- that, when stripping cables, the conductor itself must not be damaged (notched).
If crimped wire ends are used, these must be gas-tight and attached using an appropriate
tool.
7.1.1 Intrinsically safe circuits
Only 2-wire leads without shielding may be used for intrinsically safe circuits.
When laying cable as per EN 50 020, pay attention to insulation properties and isolation
distances between intrinsically safe and non-intrinsically safe circuits in the according
labelling.
Also adhere to EN 60079-14, Section 12.
7.1.2 Lead connection
When routing in and connecting cable and leads, make sure that only cables and glands
are used which are specially tested and certified in accordance with the EC-Type Exami-
nation Certificate.
Unused entry holes are to be sealed with stopping plugs specially tested and certified in
accordance with the EC-Type Examination Certificate.
Excessive pulling on the components can negatively influence the explosion protection.
1 or 2 leads can be connected into a connection terminal. If single-wire leads are em-
ployed, both leads must possess identical cross-sections as well as be manufactured of
the same material. The leads may be connected without performing any preparatory work.
22
Wall-mounting socket Type 7571/11 and plug Type 7571/12
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