Samson 3766 - Electrical Connections

36 EB 8355-1 EN
Connections
4.2 Electrical connections
For electrical installation, observe the
relevant electrotechnical regulations and the
accident prevention regulations that apply in
the country of use. In Germany, these are
the VDE regulations and the accident
prevention regulations of the employers’
liability insurance.
The following regulations apply to
installation in hazardous areas: EN60079-
14:2008 (VDE 0165, Part1) Explosive
Atmospheres– Electrical Installations Design,
Selection and Erection.
Adhere to the terminal assignment.
Switching the assignment of the electrical
terminals may cause the explosion protection
to become ineffective. Do not loosen
enameled screws in or on the housing. The
maximum permissible values specied in the
EC-type examination certicates apply when
interconnecting intrinsically safe electrical
equipment (U
i
or U
0
, l
i
or I
0
, P
i
or P
0
, C
i
or C
0
and L
i
or L
0
).
Selecting cables and wires
Observe clause12 of EN60079-14: 2008
(VDE0165,Part1)forinstallationofthein-
trinsically safe circuits.
Clause12.2.2.7applieswhenrunningmulti-
core cables and wires with more than one
intrinsically safe circuit.
The radial thickness of the insulation of a
conductor for common insulating materials
(e.g. polyethylene) must not be smaller than
0.2mm.
The diameter of an individual wire in a
ne-strandedconductormustnotbesmaller
than0.1mm.Protecttheconductorends
against splicing, e.g. by using wire-end fer-
rules.
When two separate cables are used for con-
nection, an additional cable gland can be
installed.
Seal cable entries left unused with plugs.
Fit equipment used in ambient temperatures
below –20°C with metal cable entries.
Zone 2/Zone 22
In equipment operated according to type of
protectionExnAII(non-sparkingequipment)
accordingtoEN60079-15:2003,circuits
may be connected, interrupted or switched
while energized only during installation,
maintenance or repair.
Equipment connected to energy-limited cir-
cuitswithtypeofprotectionExnLaccording
toEN60079-15:2003maybeswitchedun-
der normal operating conditions.
The maximum permissible values specied
in the statement of conformity and its ad-
denda apply when interconnecting the
equipment with energy-limited circuits in
type of protection ExnLIIC.
DANGER
!