Mounting; Opening The Device/Electrical Connection; Cable Entries (Kle); Blanking Plugs - Eaton CROUSE-HINDS Série Mode D'emploi

Fig. 4
Size 1 apparatus holder for GHG 791 01
for wall-
and
channel
fixing
B
for pipe
fixing
Size 2 apparatus holder for GHG 791 02
for wall
and
channel
fixing
B
for pipe
fixing
Explosion protected terminal boxes
GHG 791 01 and GHG 791 02
6.1

Mounting

X
Perm. ambient temperature lower -20 ° C:
ATEX - IEC
The terminal box type GHG 791 01 was tested
with an impact energy of 4 J and has to be
installed in a way that it is protected against
higher mechanical risk.
The terminal boxes can be mounted without
opening their enclosure.
In case the terminal boxes are mounted directly
onto the wall, they may rest evenly only at the
respective fastening points.
The chosen screw shall match the fastening
hole (see dimensional drawing) and it must not
damage the hole (e. g. use of a washer).
If cable entries are used from the top, mount
only in dry rooms or attach protected from
moisture.
The device shall be fastened diagonally with at
least 2 screws.
If the screws are overtightened, the
apparatus can be damaged.
The terminal boxes are suitable for fixing onto
EATON / COOPER CROUSE-HINDS apparatus
holders size 1+ 2 by means of self-cutting
screws (see fig. 2, fixing point "B").
The respective mounting instructions shall
be observed.
6.2 Opening the device /
Electrical connection
The electrical connection of the device may
only be carried out by skilled staff ina acc. to
IEC/EN 60079-14.
Before opening the apparatus, it is neces-
sary to ensure that there is no voltage or to
take suitable protective measures.
The insulation of the conductors shall reach
up to the terminal. The conductor itself shall
not be damaged.
The properly bared conductors of the cables
shall be connected, taking into account the
respective regulations.
The connectible min. and max. conductor
cross-sections will have to be observed (see
technical data).
All screws and/or nuts of the supply terminals,
also of those remaining unused, shall be
tightened down.
The conductors shall be connected with
special care in order to maintain the
explosion category.
The supply terminals are designed for the
connection of copper conductors.
If multi- or fine-wire connecting cables are
used, the wire ends will have to be handled in
acc. with the applicable national and internation-
al rules (e. g. use of ferrules).
The table indicating the current load values
which is provided on the cover inside of the
terminal boxes is to be observed.
In case of mixed equipment Ex e / Ex-i, the
required minimum distances will have to be
kept (see e.g. IEC/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 trum-
pet-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 screw plug/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.
GB
9