Cable Entries (Kle)/ Blanking Plugs; Closing The Device/ Cover Closure; Taking Into Operation; Maintenance / Servicing - Cooper Crouse-Hinds STB Mode D'emploi

Attention: The cable lugs should be crimped
onto the cable in a workmanlike manner.
It is to be ensured that the required min. air
gaps are kept (at 690V >12mm).
In case of mixed equipment Ex e / Ex-i,
the required minimum distances will have
to be kept (see e.g. EN 60079-11).
When apparatus is open, it is necessary to
ensure (disconnect voltage supply) that no
voltage is carried over into the connected
intrinsically safe circuits.
The installation instructions for intrinsically
safe electrical apparatus shall be observed. It
is necessary to ensure that the permissible
external capacitance and inductance of the
special intrinsically safe circuits are not
exceeded.
6.3 Cable entries (KLE)/
Blanking plugs
Generally, only certified cable entries and
blanking plugs may be used.
Flexible cables are to be used with
trumpet-shaped cable glands or other
suitable entries with additional pull-relief.
The mounting directives applicable to the
fitted cable entries are to be observed.
When using cable entries with a lower IP -
protection than that which applies to the
device (see technical data, page 7), the IP -
protection of the whole device will be
reduced.
In order to establish the minimum protection
category, unused holes have to be closed with
a certified blanking plug.
Care has to be taken that when fitting the
cable entries, sealing inserts appropriate to
the cable diameter are used.
In case of sealing inserts that are cut out, it
will have to be ensured that the insert is
properly adapted to the cable diameter.
In order to ensure the required minimum
protection category, the cable glands shall be
tightened down.
Overtightening might impair the protection
category.
Explosion protected terminal boxes made of stainless
steel type STB / NXT
Attention: When tightening the cap nut of
the (type ADL/ADE) metal cable entry, the
screwing is to be protected against
twisting by means of a suitable tool.
All vacant metric COOPER CROUSE-HINDS
cable entries shall be closed with the certified
blanking plug for metric cable entries.
6.4 Flanges, metal plates and
external earth connection *
Flange plates for stainless steel terminal
boxes shall be fitted so that the IP protection
in maintained. Pay attention to the proper seat
of the sealing element.
PE conductors fed from outside are to be
connected to the PE terminal provided on
the flange. The maximum cross-section is
50mm².
Attention: Metal flanges, metal plates and
metal cable glands shall be included in the
equipotential earth connection.
*
not yet certified for category II D
6.5 Closing the device/
cover closure
Any foreign matter is to be removed from Any foreign matter is to be removed from Any foreign matter is to be removed from Any foreign matter is to be removed from Any foreign matter is to be removed from
the apparatus. the apparatus. the apparatus.
the apparatus. the apparatus.
In order to ensure the required minimum
protection category, the cover screws are to be
tightened down.
Overtightening might impair the protection
category.
6.6

Taking into operation

Prior to taking the apparatus into operation,
the tests specified in the relevant national
regulations will have to be carried out.
Apart from that, the correct functioning and
installation of the apparatus in accordance
with these operating instructions and other
applicable regulations will have to be
checked.
Incorrect installation and use of the
terminal boxes can invalidate the
guarantee.
7

Maintenance / Servicing

The relevant national regulations which
apply to the maintenance/repair of
electrical apparatus in explosive
atmospheres, will have to be observed
(EN 60079-17).
Before opening the enclosure make sure
that the terminal box is disconnected from
the voltage, or take the appropriate
protective measures.
In case of intrinsically safe circuits, working is
permitted while voltage applies.
The required maintenance intervals depend on
the specific application and will therefore have
to be determined by the user dependent on
the conditions of use.
When servicing the apparatus, particularly
those parts that are decisive for the type of
protection against explosion, will have to be
checked (e.g. intactness and tightness of the
enclosure, efficacy of the gaskets and the
cable entries).
If during servicing, repairs prove to be
necessary, section 8 of these operating
instructions will have to be observed.
8 8 8 8 8 Repairs / Overhaul / Repairs / Overhaul / Repairs / Overhaul /
Repairs / Overhaul / Repairs / Overhaul /
Modifications Modifications Modifications Modifications Modifications
Overhaul and repairs may only be carried out
with genuine COOPER CROUSE-HINDS
spare parts.
Repairs that affect the explosion
protection, may only be carried out by
COOPER CROUSE-HINDS or a qualified
electrician in compliance with the
applicable national rules (EN 60079-19).
Modifications to the apparatus or changes of
its design are not permitted, except for the
mounting of additional cable entries and the
installation of supply terminals in accordance
with the approval of the apparatus.
9 Disposal / Recycling
When the apparatus is disposed of, the
respective national regulations on waste
disposal will have to be observed.
In order to facilitate the recycling of individual
components, plastic parts are provided with
the identification mark of the plastic material
used.
Subject to modifications or supplement of the
product range.
Cooper Crouse-Hinds GmbH
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