Samson 4749, Монтаж и эксплуатация

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5-14 EB 4749 EN
Installation
5.7 Establishing electrical
connections
Risk of fatal injury due to the ignition of an
explosive atmosphere.
Î
For mounting and electrical installation in
hazardous areas, observe the explosion
protection approvals as well as the rele-
vant electrotechnical regulations and the
accident prevention regulations that ap-
ply in the country of use. EN 60079-14
applies in Europe.
Î
Do not connect the electrical supply be -
fore mounting is completed.
Î
Installation, operation or maintenance of
the position transmitter must only be per-
formed by personnel with qualifications
according to Clause 4.5 of IEC 60079-
14 who has undergone special training
or instructions or who is authorized to
work on explosion-protected devices in
hazardous areas.
Incorrect electrical connection will render
the explosion protection unsafe.
Î
Adhere to the terminal assignment.
Î
Do not undo the enameled screws.
Î
Do not exceed the maximum permissible
values specified in the EC type examina
-
tion certificates when interconnecting in -
trinsically 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
).
Cable entries
Î
Fit equipment used in ambient tempera-
tures below –20 °C with metal cable en -
tries.
Equipment with type of protection Ex i
Observe Clause 12 of EN 60079-14 for in -
stallation of the intrinsically safe circuits.
Use heat-resistant cables and cable glands
that are suitable for a temperature of at least
20 K above the maximum ambient tempera -
ture.
Only use cable entries and conduit systems
which are suitable for a degree of protection
≥ IP 66 and the certified temperature range.
Equipment with type of protection Ex d
Loss of the explosion protection due to
damage to the cover's thread and/or the
connecting thread.
Î
Do not open devices with flameproof
enclosures while they are energized.
The use of unapproved cable glands will
render the explosion protection unsafe.
Î
Only use cable glands and screw plugs
which are approved for type of protec-
tion Ex d and the certified temperature
range.
Connect the devices using suitable cable en-
tries or conduit systems that comply with
EN 60079-1 Explosive Atmospheres –
Part 1: Equipment Protection by Flameproof
DANGER !
WARNING !
DANGER !
WARNING !