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Dimensions, stainless steel terminal
X = fixing dimensions
boxes
GHG 744
GHG 745
GHG 746
GHG 749
Fig. 1
Connection of bolt terminal
Explosion protected terminal boxes made of plastic or
stainless steel type GHG 74.
2 Safety instructions
The plastic or stainless steeltermi-
nal boxes GHG 74. are not
suitable for Zone 0 and Zone
20 hazardous areas.
The temperature class and explosion
group marked on the terminal boxes have
to be observed.
The requirements of the EN 61241-0 and -1
regarding excessive dust deposits and
temperature to be considered from the
user.
Modifications to the terminal boxes or
changes of their design are not permitted.
They have to be used for their intended
purpose and in perfect and clean condition.
For replacement and repair only genuine
COOPER CROUSE-HINDS / CEAG spare
parts may be used.
Repairs that affect the explosion
protection, may only be carried out by
COOPER CROUSE-HINDS / CEAG or a
qualified electrician in compliance with
the respective national regulations.
Prior to taking the terminal boxes into
operation, they will have to be checked in
accordance with the instruction as per
section 6.
Before the initial operation, any foreign
matter will have to be removed from the
terminal boxes.
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 explosion protected terminal boxes have
been designed, manufactured and tested by
Cooper Crouse-Hinds (CCH), according to
the state of the art and to DIN EN ISO 9001.
The apparat is conform to the standards
specified in the EC-Declaration of conformity.
94/9 EC: Equipment and protective systems
intended for use in potentially explosive
atmospheres.
The control units fulfil further requirements,
such as the EC directive on electromagnetic
compatibility (2004/108/EC).
4
Field of application
The plastic or stainless steel* terminal boxes
are suitable for use in Zone 1 and 2 as well as
in Zones 21 and 22 hazardous areas acc. to
IEC 60 079-10!
The enclosure materials employed, including
the exterior metal parts, are made of high-
quality materials which ensure a corrosion
protection and resistance to chemical sub-
stances 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 aggresive
atmosphere, please refer to manufacturer.
5 5 5 5 5
Use / Properties
Use / Properties
Use / Properties
Use / Properties
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).
The electrical limiting values that are
decisive for the intrinsic safety shall be
observed.
The terminal boxes can also be used in a
„normal industrial area".
The data as per point 3 and 4 will have to
be taken into account with the use.
Applications other than described are not
permitted without COOPER CROUSE-HINDS
/ CEAG´s prior written consent.
For the operation, the instructions stated in
section 7 of the operating instructions will
have to be observed.
The responsibility for the suitability and proper
use of the terminal boxes lies on the user.
6 6 6 6 6
Installation
Installation
Installation
Installation
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 will have to be
observed.
6.1
6.1
6.1
6.1
6.1
Mounting
Mounting
Mounting
Mounting
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 8 and 9
as fig. 2 and 3 page 10).
They shall not damage the hole (e.g. use of
a washer).
Cooper Crouse-Hinds GmbH
9 9 9 9 9
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