9
2 Principles
Caution
This symbol warns of a possible failure.
Failure to observe this caution may result in
the total failure of the device or the system
or plant to which it is connected.
Note
This symbol highlights important information.
X
ATEX - IEC
Special conditions
This symbol shows Highlights for safe use in
accordance to EU-Type-Examination Certificate/
IEC Ex-Certificate of Conformity.
2.1 Safety instructions
Target group:
For skilled electricians and suitable
qualified, instructed personnel in
accordance with national legislation,
including the relevant standards and, where
applicable, in acc. with IEC/EN 60079-14 on
electrical apparatus for explosive atmospheres.
The terminal boxes GHG 72. are not suitable
for Zone 0 and Zone 20 hazardous areas.
The requirements of the IEC/EN 60079-31
regarding excessive dust deposits and
temperature to be considered from the user.
The temperature class and explosion group
marked on the terminal boxes have to be
observed.
Modifications to the terminal boxes or
changes of their design are not permitted.
They shall to be used for their intended
purpose and in perfect and clean condition.
Prior to taking the terminal boxes into
operation, they shall be checked in accord-
ance with the instruction as per section 6.
Observe the national safety rules and
regulations for prevention of accidents as
well as the safety instructions included in
these operating instructions and set in
italics the same as this text!
3
Conformity with standards
The apparatus is conform to the standards
specified in the EC-Declaration of conformity,
enclosed separately.
References to standards and directives in these
operating instructions always relate to the latest
version. Other additions (e.g. details relating to
the year) shall be observed.
4
Field of application
The plastic terminal boxes are suitable for use
in Zone 1, 2 and 21, 22 hazardous areas acc.
to IEC/EN 60079-10-1 and IEC/EN 60079-10-2.
The enclosure materials employed, including
the exterior metal parts, are made of high-
quality materials which ensure a corrosion pro-
tection and resistance to chemical sub-stanc-
es corresponding to the requirements
in a "normal industrial atmosphere":
- glass-fibre reinforced polyester
- special stainless steel V4 A AISI 316 L.
In case of use in an extremely aggressive
atmosphere, you can obtain information
concerning the chemical resistance of the
materials used from your
Cooper Crouse-Hinds branch.
5
Use / Properties
The terminal boxes are intended for the
distribution of electrical energy, e.g. light
circuits, heating circuits, control circuits,
intrinsically safe circuits etc..
As to temperature class, explosion group,
permissible ambient temperature, see
technical data.
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 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
(CCH)/EATON's 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).
Explosion protected terminal boxes type, GHG 72.
GB
