Installation; Cable Termination - Eaton XB10 Technical Manual

1.0 Introduction
These compact and lightweight 10 & 15 joule beacons
have been designed for use in potentially explosive
atmospheres and harsh environmental conditions.
The beacon housing, including the flamepaths, is
manufactured completely from a UV stable glass
reinforced polyester which is ideally suited for use
offshore and onshore, where light weight combined with
corrosion resistance is required.
Stainless steel screws and mounting bracket are
incorporated ensuring a totally corrosion free unit.
An additional body clamp is available for high
vibration environments.

2.0 Installation

General
When installing and operating explosion-protected
equipment, requirements for selection, installation
and operation should be referred to e.g. IEE Wiring
Regulations and the 'National Electrical Code' in North
America. Additional national and/or local requirements
may apply.
Ensure that all nuts, bolts and fixings are secure.
Ensure that only the correct listed or certified stopping
plugs are used to blank off unused gland entry points and
that the NEMA/IP rating of the unit is maintained. MEDC
recommend the use of a sealing compound such as
HYLOMAR PL32 on the threads of glands and stopping
plugs in order to maintain the IP rating of the unit.
The beacon is mounted via the 3 off Ø9mm mounting
holes in the standard L -shaped bracket fixed to the base of
the unit. The holes have been designed to accept an M8
screw or bolt.
MEDC recommend the use of stainless steel fixings.
Note that if the beacon is to be used in high amplitude
vibration applications, a secondary restraint would be
advisable. Please contact MEDC for details.

Cable termination

CAUTION: Before removing the cover assembly,
ensure that the power to the unit is isolated.
General
Cable termination should be in accordance with
specifications applying to the required application. MEDC
recommends that all cables and cores should be correctly
identified. Please refer to the wiring diagram provided
with the product.
Ensure that only the correct listed or certified cable
glands are used and that the assembly is shrouded and
correctly earthed.
All cable glands should be of an equivalent NEMA/IP
rating to that of the beacon and integrated with the unit
such that this rating is maintained.
The internal earth terminal, where fitted, must be used
for the equipment grounding connection and the external
terminal is for a supplementary bonding connection
where local codes or authorities permit or require such
a connection.
Ensure there is not too much slack of cable cores within
the unit due to space limitations.
Exd unit
Unscrew the set screw in the cover assembly one full
turn (2.0mm A/F hexagon key). Carefully unscrew and
remove the cover assembly (using a 120mm hook wrench
if required). Once the cover assembly has been removed,
slide the PCB assembly out of the unit until the terminals
clear the enclosure body.
After cable termination has been completed, the PCB can
be fully inserted into the enclosure, ensuring the spacer
on the bottom of the PCB snaps into the retaining clip on
the boss inside the enclosure base. Be aware of correct
PCB orientation, illustrated by the label adhered to the
inside wall of the enclosure body.
To replace the cover, use the same procedure as above
but in reverse manner, ensuring the O-ring is in good
condition and fitted in the correct location at the top of
the cover threads. Ensure the cover is screwed down
tightly and that there is no damage to the thread surfaces
or mating faces of the cover and enclosure. There should
be a maximum gap of 0.2mm between the faces of the
cover and enclosure to ensure correct o-ring compression.
Exde unit
Unscrew and remove the 2 off M5 screws (4.0mm A/F
hexagon key) and lift the Exe cover away from the base of
the unit.
Terminate the field wiring as shown on the wiring diagram
supplied with the unit.
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.
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.
All terminal screws, used and unused, shall be tightened
down to between 0.5Nm and 0.6Nm. Conductive
metalwork (inc. cable glands) must be a minimum of
5mm away from the terminals After cable termination
has been completed, replace the Exe cover onto the
enclosure, ensuring there is no damage to the mating
faces and that the O-ring is correctly seated in its groove
to maintain the IP rating of the unit. Replace and tighten
the 2 off M5 cover screws (4.0mm A/F hexagon key).
DO NOT over tighten the cover screws as this may cause
damage to the unit.
To maintain the IP rating of the unit, the recommended
torque on the cover screws is between 2.5 – 3.0Nm.
Xenon beacon - Xb10 TM102.L May 2022 www.eaton.com
Xenon beacon - XB10
English
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