7
GB
Explosions protected installation switches
type GHG 273
5 Use / Properties
The installation switches are designed for
switching on and off light circuits in hazardous
areas up to 16 A (see technical data). The
temperature class, explosion group and
permissible ambient temperature, see technical
data.
The installation switches can also be used in
a ”normal industrial area“.
The switch rocker is provided with a lumines-
cent label in acc. with § 7 of the Workshop
regulations and free from any radioactive
additives.
The data as per point 3 and 4 shall be taken
into account with the use.
Applications other than described are not
permitted without Cooper Crouse Hinds
prior written consent.
For the operation, the instructions stated in
section 7 of the operating instructions shall
be observed.
The user alone is responsible for the
appropriate use of this installation switch in
consideration of the basic conditions
existing at the plant (see technical data).
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 shall be observed
(IEC/EN 60079-14).
The improper installation and operation
of switches may result in the invalidation
of the guarantee.
6.1 Mounting
The installation switches can be mounted
without opening their enclosure.
In case the switches are mounted directly onto
the wall, they may rest evenly only at the
respec tive 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).
The device shall be fastened diagonally with at
least 2 screws.
If the screws are overtightened, the
apparatus can be damaged.
When the installation switch is mounted with
the cable entries on bottom side, the switch
insert and the enclosure cover must be turned
through 180° (see fig.2).
The installation switch is suitable for fixing onto
CEAG apparatus holders size 1 by means of
self-cutting screws (see fig. 1).
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
(IEC/EN 60079-14).
Before opening the apparatus, ensure that
it has been isolated from the voltage supply,
or take appropriate protective measures.
Taking into account the respective regulations,
the properly bared conductors of the cables
shall be connected.
The insulation of the conductors shall reach
up to the terminal. The conductor itself shall
not be damaged.
If the installation switch is mounted with the
cable entries on bottom, point 6.1 and fig. 2 will
have to be observed.
After dismantling the switch base in order to
facilitate the introduction of cables, such switch
base will have to be properly fitted in again prior
to the electrical connection.
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 vacant, shall be
tightened down.
Excessive tightening may affect or damage
the connection.
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 inter-
national rules (e. g. use of ferrules).
B
for wall-
and channel
fixing
for pipe
fixing
Fastening holes “B”
Enclosure base
- entry from
bottom side -
Switch basel
(Testing the switch socket
with a hard object (screwdriver)
is not permitted.)
- PE-terminal -
on the bottom
Enclosure cover
- type label -
on bottom
Size 1 apparatus holder
Fig. 1
Fig. 2
