MALUX GHG 791 02, GHG 791 01 User Manual

Cooper Crouse-Hinds GmbH

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Explosion protected terminal boxes GHG 791 01 and
GHG 791 02

1 Technical data

Terminal box GHG 791 01/GHG 721 02

Marking acc. to 94/9/EC and directice: II 2 G Ex e d m ia IIC T6

II 2 D Ex tD A21 IP 66 T80 °C
EC type examination certificate: PTB 00 ATEX 3108
Rated voltage: up to 690 V
Rated current: acc. to table an the inside of the enclosure cover
Perm. ambient temperature: -20° C up to +40° C (catalogue version)

Special versions permit deviating temperature ranges.

Perm. storage temperature in original packing: -40° C up to +80° C
Schutzart nach EN/IEC 60529: IP 66 (catalogue version)
Insulation class acc. to EN/IEC 61140: I - is complied with by the terminal boxes

II - with internal earth plate
Supply terminal: acc. to customers specification and as certificate
GHG 791 01 max. 4mm²
GHG 791 02 max. 6mm²
Cable entries: acc. to customers specification and as certificate
Test torques:
Cover screws 1.20 Nm
Cap nut of the M12 entry 1.65 Nm
Cap nut of the M16 entry 2.50 Nm
Cap nut of the M20 entry 2.50 Nm
Cap nut of the M25 entry 3.50 Nm
Cap nut of the M32 entry 5.00 Nm
Weight GHG 791 01:
empty weight approx. 0.25 kg
with internal earth plate approx. 0.30 kg
Weight GHG 791 02:
empty weight approx. 0.45 kg
with internal earth plate approx. 0.52 kg
Intrinsically safe circuits:
Max. safe voltage U

m

690 V eff

Safe galvanic isolation from all other circuits

and earth

Terminal box GHG 791 02

Terminal box GHG 791 01 Terminal box GHG 791 02

Dimensions in mm

X = fixing dimensions

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Cooper Crouse-Hinds GmbH

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2 Safety instructions

The terminal boxes GHG 791 are

not suitable for Zone 0 and Zone

20 hazardous areas.

The operations must be carried out by
electrical suitably trained in hazardous
areea with knowledge of increased safety
explosion protection.

The temperature class and explosion
group marked on the terminal boxes shall
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 shall be used for their intended
purpose and in perfect and clean
condition.

For replacement and repair only genuine
COOPER CROUSE-HINDS spare parts
shall be used. Repairs that affect the
explosion protection, may only be carried
out by COOPER CROUSE-HINDS 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!

Explosion protected terminal boxes GHG 791 01 and
GHG 791 02

3 Conformity with standards

The apparat is conform to the standards
specified in the EC-Declaration of conformity,
enclosed separately.
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/EEC).

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). The temperature
class, explosion group and 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 shall be
taken into account with the use.

Applications other than described are not
permitted without COOPER CROUSE­HINDS’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.

4 Field of application

The terminal boxes GHG 791 01 and GHG
791 02 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 and
IEC 60 079-14!

The enclosure materials employed, including
the exterior metal parts, are made of high­quality materials which ensure a corrosion
protection and resistance to chemical
substances corresponding to the
requirements in a “normal industrial
atmosphere”:

- impact resistant polyamide

- special steel AISI 316 L
In case of use in an extremely aggresive
atmosphere, please refer to manufacturer.

Terminal box GHG 791 01

Fig. 1

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