Field Of Application; Installation; Mounting - Cooper Crouse-Hinds CEAG GHG 75 Mode D'emploi

Contact arrangement
Control switch Ex 23, 28, 29
Switch mechanism
4 5
Special switch
7 8
4

Field of application

The terminal and bus bar boxes are suitable
for use in Zone 1, 2 and 21, 22 hazardous
areas acc. to IEC 60079-10.
The materials used for the enclosures,
including the exterior metal parts, are high
quality materials that ensure a corrosion
protection and resistance to chemical
substances according to the requirements for
use in a "normal industrial atmosphere":
- sheet steel with plastic powder coating
- stainless steel V4 A AISI 316 L.
Optionally, a surface protection for tropical
and sea climates, etc. is also available for use
in extremely aggressive atmospheres.
14 14 14 14 14
Cooper Crouse-Hinds GmbH
Explosion-protected termina- and bus bar boxes, type
GHG 75.
5 Application / Properties
Circuitry
The terminal and bus bar boxes are primarily
used for the flange-mounting and connection
. 049
of flameproof enclosures. They can be used
independently as terminal or bus bar boxes
for the distribution of electric energy, e.g. main
circuits, lighting circuits, heating circuits,
. 037
control circuits, intrinsically safe circuits, etc.
(see Technical Data, pages 11-12, for the
temperature class, explosion group,
permissible ambient temperature).
. 191
The boxes can be fitted with control and
indicating components that have been
certified for this purpose within the scope of
the approvals. They are then used as boxes
for the control or indication of the electric
energy of electrical installations, machines,
drives, etc. in potentially explosive
atmospheres.
6
Specially marked control unit components can
be operated in "intrinsically safe circuits".
mechanism
The electric limiting values applicable to
9
"intrinsic safety" shall be observed.
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, pages 12-13, 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).
Where required, the bases are fitted with 0.6
W resistors, fine-wire fuses and diodes (max.
power dissipation 1 W).
The measuring instrument is used for the local
indication of electrical values. (See Technical
Data, pages 12-13, for the type of movement,
accuracy and connections).
If a cut out is made in the respective locking
position of the switch collar, the small control
switches can be padlocked (diameter of
shackle up to 5 mm).
Ex 23 control switch actuator elements shall
be provided with a drilled hole,
the respective locking position in the switch
collar, thus allowing them to be padlocked as
described above.
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.
The data according to sections 3 and 4 is
to be taken into account during use.
Applications other than those described
are not permissible without a written
declaration of consent from Messrs. CEAG.
During operation the instructions stated in
section 7 of the operating instructions are
to be observed.
The sole responsibility with respect to the
suitability and proper use of these boxes
lies with the operator.
6 6 6 6 6

Installation

Installation Installation Installation Installation
The relevant national regulations
(e.g. Betr.Si.V, the equipment safety law for
Germany) and the generally recognized rules
of engineering apply for the installation and
operation.
6.1 6.1 6.1 6.1 6.1

Mounting

Mounting Mounting Mounting Mounting
The terminal and bus bar boxes can be
mounted without opening the enclosure.
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 fixed in such a way that they
cannot twist.
The chosen screw shall match the fixing hole.
Apparatus shall be fixed with a minimum of
two diagonally opposed screws.
If the terminal and bus bar boxes are mounted
on flameproof enclosures, the boxes shall be
fitted with the number of screws, M8 x 25,
with washers and toothed disks that is
provided for in the flameproof enclosure.
Excessive tightening can result in damage
to the flameproof enclosure or the terminal
or bus bar box.
Warning: All seals between the boxes and
between the boxes and the flameproof
enclosures are to be fitted correctly. (On
ordering they are included in the scope of
delivery for this purpose).
The bus bar connections shall be made as
shown in Fig. 3, page 16, Figs. 4-9, page 17,
and Figs. 11-16, page 18. In each case the
individual parts are enclosed loose in a bag.
Warning: The connections for the incoming
and outgoing leads of the bus bar systems
∅
5.5 mm, in
shall be fitted in such a way that the
current load of the copper rails is
distributed evenly.
If necessary, the connection up to 240 mm²
shall be used for all connections (Fig. 10,
page 17, and Fig. 17, page 18).
All minimum clearances of the bus bar
systems to the enclosure wall and between
the connections shall be maintained in
accordance with Fig. 10, page 17, and fig.
17, page 18.