Atex Units; Special Conditions For Safe Use - Eaton XB4 Technical Manual

Gb
Db
Where Gb signifies suitability for use in a Zone 1 surface
industries area in the presence of gas.
Where Db signifies suitability for use in a Zone 21 surface
industries area in the presence of dust.

ATEX units

Ex d unit (ATEX certification No. Baseefa02ATEX0224X)
Ex d IIC T4 (-55°C to +85°C)
Ex tb IIIC T135°C (-55°C to +85°C) Db IP6x
Ex d IIC T5 (-55°C to +55°C)
Ex tb IIIC T100°C (-55°C to +55°C) Db IP6x
Ex d IIC T6 (-55°C to +40°C)
Ex tb IIIC T85°C (-55°C to +40°C) Db IP6x
Ex de unit (ATEX certification No. Baseefa02ATEX0224X)
Ex de IIC T4 (-50°C to +55°C)
Ex de IIC Ex tD A21 IP6X T135°C (-50°C to +55°C)
Ex de IIC T5 (-50°C to +40°C)
Ex de IIC Ex tD A21 IP6X T100°C (-50°C to +40°C)
The ATEX certificate and product label carry the ATEX
group and category marking:
II 2 GD
Where:
Signifies compliance with ATEX
II Signifies suitability for use in surface industries
2 Signifies suitability for use in a zone 1 area
G Signifies suitability for use in the presence of gases
D Signified suitability for use in the presence of dust
The ATEX and IECEx units also have the following
EMC approvals
Electro-static discharge (DC and AC) to EN61000-6-2:
2005/IEC61000-4-2:1995 +A1:1998 & A2:2000
Radiated Field Immunity (DC and AC) to EN61000-6-2:
2005/IEC61000-4-3:2002 + A1:2002
Electrical Fast Transients/Bursts (DC and AC) to
EN61000-6-2:2005/IEC61000-4-4:2004
Surge Immunity (DC and AC) to EN61000-6-2:2005/
IEC61000-4-5:1995 + A1:2000
Conducted Immunity (10V) to EN61000-6-2:2005/
IEC61000-4-6:2005 + A1:2004 & A2:2006
Dips and Interruptions (AC) to EN61000-6-2:2005/
IEC61000-4-11:2004
Conducted and radiated emissions (AC) to
EN61000-6-3:2007
Mains harmonics (AC) to EN61000-6-3:2007/
IEC61000-3-2:2006

6.0 Special conditions for safe use

1. For replacement purposes, the cover fixing screws
shall be of stainless steel, minimum grade A4-80
2. Any cable entry device used with the equipment shall
be suitable for the entry arrangement and maintain the
ingress protection level IP6X
And additionally for the Ex de versions of
the beacons:-
a. Not more than one single or multiple strand lead shall
be connected into either side of any terminal, unless
multiple conductors have been joined in a suitable
manner, e.g. two conductors into a single insulated
crimped boot lace ferrule.
b. Leads connected to the terminals shall be insulated for
the appropriate voltage and this insulation shall extend
to within 1mm of the metal of the terminal throat.
c. All terminal screws, used and unused, shall be
tightened down.
d. When fitting QB insulating combs (cross connecting
links) to terminal ways a further single conductor
of 1.5mm 2 minimum cross-sectional area may
be connected to the same terminal way on top of
the prong.
e. The inside edge of the insulation of the QB combs
cross-connecting arm shall be in contact with the
terminal moulding.
f. When used in dust atmospheres the flame proof cable
entry devices or stopping plugs shall be selected and
installed to maintain the dust tight (IP6X) integrity of
the enclosure.
Xenon beacon Xb4 TM148.H May 2022 www.eaton.com
Xenon beacon XB4
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