Application / Properties; Application / Properties Flange Sockets; Installation; Mounting - Eaton CROUSE-HINDS Série Mode D'emploi

Fig� 4
1
2
Fig� 5
Stainless steel
enclosure
Screw M6 x 16
Spring washer
Fig� 6
Mounting of fixing lugs
right
5

Application / Properties

The distributions are used for safeguarding,
controlling, switching and distributing electric
power, e�g� main, lighting, heating, control and
intrinsically safe circuits, etc� (see Technical
Data for temperature classes, explosion groups,
permissible ambient temperatures)�
For controlling electric machines and installa-
tions in potentially explosive atmospheres, the
enclosures can be fitted with control and
indicating components that have been certified
for this purpose within the scope of the
approvals�
Specially marked control unit components can
be operated in "intrinsically safe circuits" �
The electric limiting values applicable to
"intrinsic safety" shall be observed.
The function of circuit breakers and ELCBs
(RCDs) with circuit breakers shall be checked
after several short circuits�
An ELCB (RCD) does not prevent the sensation
caused by an electric shock, but it limits the
duration of the current flow through the human
body to such a short time that the probability of
a fatal effect is reduced to a negligible amount�
Once the cause for the tripping of the ELCB
(RCD) has been eliminated, it is reset by
switching the toggle to the "ON" position�
By cutting out the switch collar in the respec-
tive locking position, the small control switches
can be locked with a padlocking facility� (Ø lock
shackle 5mm)�
The front actuators of the Ex 23 control
switches feature a drilled hole, Ø 5�5mm, in the
respective locking position on the switch collar
and can, therefore, be locked with a padlocking
facility of the type mentioned above�
Explosion-protected distributions GHG 619
When required, the Ex 28 and Ex 29 control
switches are provided with a locking facility that
also allows them to be locked with a padlock�
Details of the electric contacts are given on the
base of the component�
The version with gold-tipped contacts is marked
with a "G" or with colour (see Technical Data,
for max� current load)�
To ensure reliable isolation, the normally closed
contacts are designed as forced break contacts
(optional Ex 28/Ex 29 with forced make
contacts)�
Wall fixing
Where required, the bases are fitted with 0�6 W
lugs
resistors, fine-wire fuses and diodes (max� pow-
er dissipation 1 W)�
The measuring instruments AM 72 and AM 45
are used for the local indication of electrical
values� (See Technical Data, for the type of
movement, accuracy and connections)�
With measuring instruments for c�t� connection
n/1A (fig� 4, item 2), the interchangeable scales
(fig� 4, page 28) can be exchanged via a flap on
underneath
the upper part of the measuring instrument�
Observe the rated diversity factors accordance
to IEC/EN 60439 4�7 when equip the
distributions�
Information on the safe use of third-party
products, unless non specified in these
operating instructions, have to be requested
from the respective manufacturer of the
equipment.
The data according to sections 3 and 4 shall
be taken into account during use.
Applications other than those described are
not permissible without a written declaration
of consent from the manufacturer.
During operation the instructions stated in
section 7 of the operating instructions shall
be observed. These operating instructions
also apply as instructions for the replacement
or addition to individual flameproof compo-
nents.
The sole responsibility with respect to the
suitability and proper use of these boxes lies
with the operator.
5.1 Application / Properties
Flange sockets
The flange sockets are used for the power
supply of local controls with varying locations,
as well as of electrical installations, mobile
machinery and driving gear in hazardous areas�
The low-voltage plugs and sockets are fitted
with a load switch and can be used up to max�
16 A / 32 A (see technical data)� The plugs and
sockets can generally be used for the voltage
range laid down in IEC/EN 60309 (e�g� UN 400V
that corresponds to the voltage range 380-415V)�
The apparatus connected to the plug shall
be suitable for the applied mains voltage.
In order to switch on the socket, the plug is
inserted, pushed fully home and then turned
through approx� 45° to the right� Thereby the
plug is locked in the socket�
For switching off and pulling the plug, proceed
in inverse Order�
After a short in the circuit, the functioning of
the plug and socket system and of the plugs
has to be checked.
6

Installation

The relevant national regulations(e�g� Betr�Si�V,
the equipment safety law for Germany), the
generally recognized rules of engineering and
the IEC/EN 60079-14 apply for the installation
and operation�
6.1

Mounting

The distribution enclosures can be mounted
without opening the cover�
When the boxes are mounted directly onto the
wall, they shall rest evenly only on the fastening
points provided for this purpose, and they shall
be fixed in such a way that they cannot twist or
turn�
The screw used shall match the fixing hole (see
dimension drawings) and must not damage the
opening (e�g� use of a washer)�
Distributions in the sizes 1 + 2 shall be fixed
with a minimum of two diagonally opposed
screws�
Distributions in the sizes 3 + 4 shall be fixed
with a minimum of 4 screws�
The mounting of wall fixing lugs on stainless
steel distribution boxes is shown on Figs� 5 + 6�
The fixing lugs are not be loaded with more
than 50 kg�
Excessive tightening can result in damage to
the flameproof enclosure or the terminal or
bus bar box.
See the drawings and Figs� 1 - 3 for the
mounting of the bus bar connections�
The individual parts are enclosed loose in a bag�
The MCB flap Size 2 is mounted with six
screws� The clickframe is catched in the holders
of the flap� Only with the clickframe the degree
of protection is IP66�
Warning: The connections for the incoming
and outgoing leads of the bus bar systems
shall be fitted in such a way that the current
load of the copper rails is distributed evenly.
All minimum clearances of the bus bar
systems to the enclosure wall and between
the connections shall be maintained in
accordance with figs. 2-3.
GB
47