Field Of Application - Cooper Crouse-Hinds CEAG GUB Serie Instrucciones De Uso

4. Field of application

The flameproof enclosures and distributions are
intended for use in potentially explosive
atmospheres in zones 1, 2 and 21, 22 in
accordance with EN/IEC 60079-10. The
enclosure materials used, including any external
metal parts, are high quality materials that ensure
a corrosion resistance and resistance to
chemical substances according to the
requirements for use in a "normal industrial
atmosphere":
- Copper free aluminium alloy casting
- Plastic powder coating finish
- Stainless steel
In case of use in an extremely aggressive
atmosphere, please consult to the manufacturer.
5. Use / Properties
The enclosures and distributions are used for
safeguarding, controlling, indicating, isolating the
electrical energy and the power supply of
electrical installations, machines and drives, etc.
in potentially explosive atmospheres. The
temperature class, explosion group and
permissible ambient temperature can be found
in the technical data.
If the enclosures and distributions contain
intrinsically safe circuits
components, the electrical limiting values
that are decisive for the "Intrinsic Safety"
shall be observed.
The data according to sections 2 and 4
shall be taken into account during use.
Applications other than those described
are not permissible without a written
declaration of consent from COOPER
Crouse-Hinds / CEAG.
During operation the instructions stated
in section 7 of the operating instructions
shall be observed. The sole responsibility
with respect to the suitability and proper
use of these boxes lies with the operator.
6. Installation
Only fully certified enclosures
distributions may be installed and put into
operation.
The EN 60079-14, relevant national regulations
and the generally recognized rules of
engineering shall be applied for the installation
and operation.
Transport and storage of the enclosures or
distributions is permitted in the original packaging
and specified positions only.
The improper installation and operation of
enclosures can result in the invalidation of the
guarantee.
Explosion protected switchgear equipments and racks Serie: GUB
6.1 Mounting
When the flameproof enclosures and
distributions are mounted directly onto the
wall or onto wall or floor frames, they shall
rest evenly only on the fastening points
provided for this purpose.
In order to be able to open the covers of
flameproof enclosures faultlessly, it is
absolutely essential to ensure that the
flameproof enclosures and distributions
are mounted over a flat surface.
Fixing dimensions are shown in the particular
technical documentation of supplied equipment.
The screw chosen shall fit the fixing hole and
shall not damage the hole (e.g. use of a
washer). The number of screws used for fixing
the equipment shall correspond to the number
of fixing holes in the enclosures.
In the event of equipments or distributions panels
with several enclosures, the covers of the
flameproof enclosures shall not be interchanged.
Which flameproof enclosure cover belongs to
which enclosure base can be determined by
identical production numbers on the inside of
the enclosure cover and the front of the
enclosure base.
Special attention shall be paid to the PE
connections.
or Ex-I
Separate documents containing assembly
instructions for units in special designs are
provided with the equipment.
Warning: Immediately after installation
erection, distributions on floor frames
shall be safeguarded against falling over.
6.2 Opening the device
/ Electrical connection
Before opening flameproof enclosures with or
without switches, it is necessary to ensure that
there is no voltage and pay special attention to
compliance with any warnings indicated on the
enclosures and equipment.
The connection of explosion-protected
flameproof enclosures and equipments may only
be carried out by specialists. This flameproof
or
equipment shall be connected directly in the
flameproof enclosure using certified flameproof
cable entries, whereby the mounting instructions
for the cable entry shall be taken into account
(see Section 6.3 Cable Entries).
Warning: In order to establish the type of
protection "flameproof enclosure", it is
essential to pay attention to the correct
mounting of the cable and cable entry.
1
2
Fig. 1
To open a flameproof enclosure (see Fig. 1),
the interlocking screw, item 3, in the cover has
to be unscrewed. The cover, item 2, can then
be removed from the base, item 1, by turning it
anticlockwise.
Warning: The cover shall be safeguarded
against falling off.
To maintain the explosion protection, conductors
shall be connected with special care.
The insulation shall reach up to the termi-
nal. The conductor itself shall not be
damaged.
The minimum and maximum conductor cross
sections that can be connected shall be
observed (see
documentation of supplied equipment). All
screws and/or nuts of connection terminals,
including those not in uses, shall be tightened
down securely.
When cables are connected to the terminals the
respective torques given by the manufacturer
of terminals must be observed.
Excessive tightening can affect the
connection.
The built-in standard terminals or terminal points
are designed for the direct connection of
conductors with copper wires.
The bus bars, bolt terminals and flameproof bolt-
type bushings can be connected using DIN ca-
ble lugs.
Warning: The cable lugs shall be crimped
onto the cable in a workmanlike manner.
It is necessary to ensure that the minimum
required air gaps are maintained (i.e. for
690V > 12 mm).
If there are Ex-i associated apparatus inside of
the enclosures, the required separation and
minimum clearances between intrinsic safety
and non intrinsic safety circuits shall be
maintained (see, for example, EN/IEC 60079-
11). For connection of Ex-i associated apparatus
the SYS-Ex-i intrinsic safety system documents
in line with EN/IEC 60079-25 and the intrinsic
safety parameters indicated in the enclosures
must be observed.
In the case of wired flameproof equipments and
distributions, the circuit and connection plans
included with the equipment shall be observed.
6.3 Ex-d cable entries
/ Ex-d blanking plugs
Generally only
flameproof cable entries and certified
flameproof blanking plugs may be used.
These should be for the same groups of
explosion of the enclosure, in this case IIC
and IIIC for gas and dust respectively.
The relevant mounting directives for flameproof
cables entries and blanking plugs shall be
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observed.
When using cable entries with a degree of
protection that is lower than the IP protection of
the equipments (see Technical Data), the degree
of protection IP for the complete unit is reduced.
In order to ensure the required minimum degree
of protection, the cable entries shall be tightened
down securely.
Cooper Crouse-Hinds, S.A.
particular technical
suitable certified
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