Putting Into Operation; Maintenance / Servicing - Eaton CROUSE-HINDS Série Mode D'emploi

Fig. 2 Angled feet
mounting hole
Fig. 3 Type lable Trafo
Explosion-protected
transformer
6 Installation
For the mounting and operation, the respective
national regulations (e.g. Betr.Si.V., equipment
safety law for Germany) as well as the general
rules of engineering will have to be observed.
6.1 Mounting
When mounting the Ex-e transformer the
distances to the enclosure walls acc. table 1,
pages 4 shall be maintained. When mounting
the transformer in a smaller enclosure the
surface temperature at the transformer shall be
measured and documented.
Mounting dimensions are taken from the table
see pic. 1, side 4.
The transformer is mounted by means of its
angled feet on a mounting plate with minimum
4 screws (page 5, fig 2). Here the maximum
screw size possible for the mounting feet shall
be used.
The connections for the the terminal block shall
be taken from the Type label of the transformer
(page 5, fig 3).
The minimum and maximum connectable
conductor cross sections are to be observed.
The conductor insulation must reach up to
the terminal. The wire itself must not be
damaged.
When using multi- or fine-wire connection
cables, the wire ends shall be treated in
accordance with the valid national and
international regulations (e.g. use of cable
end sleeves).
The isolation transformer must be connected in
to the potential equalization at the point marked
with the earth symbol.
The primary and secondary fuses to protect
the transformer are to be rated in accor-
dance to the primary and secondary data
and rating. The rated currents for the
primary and secondary fuses are given
on the type label.
The built-in standard terminal is designed
for the direct connection of conductors with
copper wires.
Connections to the secondary winding with
a cross section > 16 mm² shall be connected
to separately certified terminals inside the
enclosure. The terminals must be rated acc.
to the electrical data on the type label.
All screws and/or nuts of the connection
terminals, including those not in use, shall be
tightened down securely.
If the screws are overtightened, the
apparatus can be impaired or damaged.
6.2

Putting into operation

Before putting the apparatus into operation,
the tests specified in the individual national
regulations shall be performed.
Improper installation and use of the Ex e
Isolation transformer can result in loss of
guarantee.
7

Maintenance / Servicing

The valid national regulations for the
servicing / maintenance of electrical
apparatus for use in potentially explosive
atmospheres shall be observed the
EN/IEC 60079-17.
Prior to opening the enclosure, it is
necessary to ensure that the voltage
supply has been isolated or to take
suitable protective measures.
The necessary intervals between servicing
depend upon the specific application and shall
be stipulated by the operator according to the
respective operating conditions.
8 Repairs / Modifications
Only original Cooper Crouse-Hinds / CEAG
parts shall be used for carrying out repairs.
In the event of damage to the flameproof
encapsulation, replacement of the respective
components is mandatory. In case of doubt,
the respective apparatus shall be sent back
to the manufacturer for repair.
Apparatus modifications or design changes are
not permitted.
9 Disposal / Recycling
The respective valid national regulations
for waste disposal shall be observed when
disposing of apparatus.
The product range is subject to changes and
additions.
GB
9