Installation; Mounting; Electrical Connection - Eaton CROUSE-HINDS Série Mode D'emploi

Fig. 2
Wall mounting bracket
Screw M6 x 16 Wall mounting
Lock washer bracket
Fig. 3
Mounting the wall mounting bracket
Mounting at right side
Mounting at bottom
Fig. 4
Apparatus holder size 3 for pipe

mounting,

vertically
Fastening holes
for plastic terminal
boxes GHG 744
Fig. 5
Apparatus holder size 3 for channel
and wall
mounting,
vertically
Fastening
holes for plastic
terminal boxes
GHG 744
12
Explosion protected terminal boxes
made of plastic or stainless steel type GHG 74
6

Installation

For the mounting and operation, the respec-
tive national regulations (e.g. Betr.Si.V,
equipment safety law for Germany, IEC/EN
60079-14) as well as the general rules of
engineering will have to be observed.
6.1 Mounting
The plastic and stainless steel terminal boxes
can be mounted without opening their
enclosure.
When mounting the terminal boxes directly
onto the wall, they shall rest evenly only on
the fastening points provided for them.
The chosen screw must match the fastening
hole (see dimensional drawings page 9
and 10 as fig. 2 and 3 page 12).
They shall not damage the hole (e.g. use of
a washer).
If the screws are overtightened, the plastic
terminal boxes may be damaged.
The plastic terminal boxes GHG 744, 745, 746
and GHG 749 are suitable for fastening onto
COOPER CROUSE-HINDS / EATON apparatus
holders by means of self-cutting screws
(see fig. 4-7 and page 13 fig.8).
Fig. 6
Apparatus holder size 3
for pipe mounting, horizontally
C
Fastening holes for plastic terminal
Fig. 7
Apparatus holder size 3 for channel
and wall mounting, horizontally
B
Fastening holes for plastic terminal
C
boxes GHG 744
E
boxes GHG 744
The respective mounting instructions will have
to be observed.
Mounting the wall mounting brackets onto the
stainless steel terminal boxes GHG 744,
GHG 745, GHG 746 and GHG 749 is done as
per fig. 2 and 3.
Observe the min. No. of wall mounting
brackets!
The minimum protection rating, IP65, must be
observed if the device is used in areas at risk
from dust. This must also be taken into
consideration when selecting cable glands.
6.2 Opening the apparatus/

Electrical connection

Before opening the apparatus, it is neces-
sary to ensure that there is no voltage or to
take suitable protective measures.
The electrical connection of the apparatus
may only be carried out by skilled staff
(IEC/EN 60079-14).
The table indicating the current load values
which is provided on the cover inside of the
terminal boxes and in this operating
instruction (page 21) is to be observed.
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 connectable min. and max. conductor
cross-sections will have to be observed.
All screws and/or nuts of the supply terminals,
and unused terminals, shall be tightened down.
The fitted standard terminals are designed for
direct connection of conductors with copper
cores.
The conductors shall be connected with
special care in order to maintain the
explosion category.
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).
If stud terminals are fitted, DIN cable lugs shall
be used.
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 690 V >12 mm).
If up to 240mm² (bolt type) terminals are
mounted in the terminal/junction box, they shall
be connected as shown (max 2 x 240mm²) in
fig. 1, page 11.
GB