Electrical Connections - Samson 3725 Mounting And Operating Instructions

5.8 Electrical connections

DANGER
!
Risk of the formation of an explosive atmosphere.
For installation in hazardous areas, observe the relevant standards that apply in the country
of use.
Standard applicable in Germany: EN 60079-14: 2008 (VDE 0165, Part 1) Explosive Atmo-
spheres – Electrical Installations Design, Selection and Erection.
WARNING
!
Incorrect electrical connection will render the explosion protection unsafe.
− Adhere to the terminal assignment.
− Do not undo the enameled screws in or on the housing.
− Do not exceed the maximum permissible values specified in the EC type examination certif-
icates when interconnecting intrinsically safe electrical equipment (U
C or C and L or L
i 0 i
Selecting cables and wires
Î Observe clause 12 of EN 60079-14
(VDE 0165, Part 1) for installation of the
intrinsically safe circuits.
Î Clause 12.2.2.7 applies when running
multi-core cables and wires with more
than one intrinsically safe circuit.
Î Radial thickness of the insulation of a
conductor for common insulating materi-
als (e.g. polyethylene): minimum
0.2 mm.
Î Diameter of an individual wire in a
fine-stranded conductor: minimum
0.1 mm.
Î Strip 8 mm insulation off the wire ends.
Î Protect the conductor ends against splic-
ing, e.g. by using wire-end ferrules.
EB 8394 EN
).
0
Î Cable glands available:
See Table 7 on page 19
Mounting and start-up
or U , l or I , P or P
i 0 i 0 i
,
0
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