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2
Safety instructions
The operations must be carried out
by electrical suitably trained in
hazardous area with knowledge
of increased safty explosion
protection IEC 60079-14.
The terminal boxes GHG 731 are not
suitable for Zone 0 and Zone 20
hazardous areas.
The requirements of the EN 61241-0 and -1
regarding excessive dust deposits and
temperature to be considered from the
user.
The temperature class and explosion
group marked on the terminal boxes shall
be observed.
Modifications to the terminal boxes or
changes of their design are not
permitted.
They shall be used for their intended
purpose and in perfect and clean
condition.
For replacement and repair only genuine
COOPER CROUSE-HINDS / CEAG spare
parts shall 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 shall be checked in
accordance with the instruction as per
section 6.
Before the initial operation, any foreign
matter shall 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 apparat is conform to the standards
specified in the EC-Declaration of conformity.
It has been designed, manufactured and
tested according to the state of the art and to
DIN EN ISO 9001.
94/9 EC: Equipment and protective systems
intended for use in potentially explosive
atmospheres.
The apparats fulfil further requirements, such
as the EC directive on electromagnetic
compatibility (2004/108/EC)
4
Field of application
The terminal boxes are suitable for use in
Zone 1 and 2 hazardous areas acc.
IEC 60079-10!
The enclosure materials employed, including
the exterior metal parts, are made of high-
quality materials which ensure a corrosion
protection and resistance to chemical
substances corresponding to the
requirements in a "normal industrial
atmosphere":
- impact resistant polyamide
- impact resistant polyester
- special steel AISI 316 L
- Non-ferrous metal
In case of use in an extremely aggresive
atmosphere, please refer to manufacturer.
5
Use/Properties
The terminal boxes are intended for the
distribution of electrical energy e.g. light
circuits, heater circuits, control circuits,
intrinsically safe circuits etc. in hazardous
areas (see technical data). Temperature
class, explosion group and permissible
ambient temperature, see technical data.
The terminal boxes can also be used in a
„normal industrial area".
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 / CEAG'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 terminal box 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.
6.1
Mounting
The terminal boxes can be mounted without
opening their enclosure.
In case the terminal boxes are mounted
directly onto the wall, they may rest evenly
only at the respective 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.
6.2
Opening the device/
Electrical connection
The electrical connection of the device
may only be carried out by skilled staff.
The insulation of the conductors shall
reach up to the terminal. The conductor
itself shall not be damaged.
The properly bared conductors of the cables
shall be connected, taking into account the
respective regulations.
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 unused,
shall be tightened down.
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 international rules
(e. g. use of ferrules).
The table indicating the current load
values which is provided on the cover
inside of the terminal boxes is to be
observed.
In case of mixed equipment Ex e / Ex-i, the
required minimum distances will have to be
kept (see e.g. EN 60079-11).
After removing the terminal rail, item 1, fig. 1,
(in order to facilitate the entry of cables), the
terminal rail shall again be propperly put in
place before establishing the electrical
connection.
Removal and mounting of the terminal rail are
performed as follows:
The terminal rail with holder can be removed
from the enclosure base by releasing the lock
bolt, item 2, fig. 1, on the terminal rail holder,
item 1, fig. 1, with a suitable tool (e.g.
screwdriver).
The terminal rail holder is installed by
inserting it into the cam in the bottom of the
enclosure and snapping it into position (see
fig. 1).
In the case of building up the electrical
equipment in the "protective insulation"
version, appropriate sticker
(
) GHG 905 1002 P0005 can be
requested by the manufacturer.
If the inserted terminal rail is not equipped
completely with line-up terminals, the terminal
rail must be included in the equipotential
earth connection also.
Fig. 1
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Cooper Crouse-Hinds GmbH
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