Electrical Connections - Samson EB 3967 EN Mounting And Operating Instructions

Mounting and start-up

5.3 Electrical connections

DANGER
!
Risk of fatal injury due to electric shock.
Î For electrical installation, observe the
relevant electrotechnical regulations and
the accident prevention regulations that
apply in the country of use.
Valid regulations in Germany:
− VDE regulations
− Accident prevention regulations of the
employers' liability insurance.
DANGER
!
Risk of fatal injury due to the ignition of an
explosive atmosphere.
Î For installation in hazardous areas, ob-
serve the relevant standards that apply in
the country of use.
Valid standards in Germany:
− EN 60079-14: 2008 (VDE 0165,
Part 1) Explosive Atmospheres –
Electrical Installations Design, Selection
and Erection.
WARNING
!
Incorrect electrical connection will render
the explosion protection unsafe.
Î Adhere to the terminal assignment.
Î Do not undo the enameled screws in or
on the enclosure.
42
WARNING
!
Intrinsic safety rendered ineffective in
intrinsically safe devices.
Î Only connect intrinsically safe devices
intended for use in intrinsically safe
circuits to certified intrinsically safe input-
connected units.
Î Do not place intrinsically safe devices
back into operation that were connected
to intrinsically safe input-connected units
without certification.
Î Do not exceed the maximum permissible
electric values specified in the EU type
examination certificates when intercon-
necting intrinsically safe electrical equip-
ment (U or U , l
i 0
and L or L ).
i 0
Selecting cables and wires
Î Observe clause 12 of EN 60079-14:
2008 (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 Protect the conductor ends against
splicing, e.g. by using wire-end ferrules.
or I , P or P , C or C
i 0 i 0 i
EB 3967 EN
0