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2
Safety instructions
The operations shall be carried out
by engineering/development
specialists according to I
EC/EN 60079-0 and specialist
companies with QM-system.
The modules GHG 622. are not suitable for
Zone 0 hazardous areas.
Warning: These modules shall be built into an
enclosure that fulfils the requirements of a
recognized type of protection acc. to
IEC/EN 60079-0.
The letter "U" in the certification number
means that this component certificate may
only be used as a basis for the certification of
apparatus or protective systems.
The permissible ambient temperature range
and the self-heating of the apparatus, that is
mainly caused by the power dissipation are
to be observed to ensure that the operating
temperature range stated on the type label of
the apparatus is maintained.
The temperature class of the complete
installation or distribution is determined by
the power dissipation of all the built-in
modules and components.
Observe the directives for self-heating.
The apparatus shall be used for the intended
purpose and shall be in a perfect and clean
state.
Modifications to the distributions or design
changes are not permitted.
Prior to being put into operation, the
modules shall be checked in accordance with
the instructions given in section 6.
The minimum terminal cross sections of the
flameproof modules shall be observed during
connection in acc. with
IEC/EN 60204-1:2008.
The national safety rules and regulations for
the prevention of accidents, as well as the
safety instructions included in these
operating instructions, that, like this text, are
set in italics, shall be observed.
Flameproof module, series GHG 622
3
Conformity with standards
The apparatus is conform to the standards
specified in the EU-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
Modules of the series GHG 622. may be built
into enclosures in the type of protection
"increased safety" (EN 60079-7).
When built into these Ex e enclosures, the
modules are suited for use in both Zone 1 and
Zone 2 hazardous areas in accordance with
IEC/EN 60079-10-1!
The enclosure materials used, including any
external metal parts, are high quality materials
that ensure a corrosion resistance and resistance
to chemical substances according to the
requirements for use in a "normal industrial
atmosphere"
5
Application / Properties
The explosion-protected module enclosures in
accordance with IEC/EN 60079-1 are used for
the flameproof encapsulation of switchgear such
as circuit breakers that give off arcs or sparks
during normal operation and, as a result, could
ignite an existing potentially explosive atmos-
phere.
The use of these modules depends on the
respective encapsulated switch unit.
Important: When using these modules, the
technical data and the connection diagram
on the type label shall be observed.
When circuit breakers are flameproof encapsu-
lated in the enclosures, after several short
circuits it is necessary to test the modules to
ensure that they function correctly.
Optionally RCCB/RCBO be chosen with the
following additional equipment:
Auxiliary switch:
The auxiliary switch is equipped with poten-
tial-free contacts and clearly shows the switch
status of the main contacts, whether the
circuit-breaker is manually switched off or
through overload. By connection of the auxiliary
switch to the switchboard, it becomes trip-free.
Signal contact:
is activated by overload, earth fault or short-cir-
cuit but not through manual shutdown of the
circuit-breaker. Through switching-on the
circuit-breaker, the signal contact will be reset.
Undervoltage release:
For the remote tripping of the circuit-breaker. A
relay-coil allows for the switching on of the
circuit-breaker when tension is applied. When
supply voltage is interrupted or turned off, the
undervoltage release activates the circuit breaker
(suitable for emergency cut-off loop).
Shunt release:
For the remote tripping (switching off) of the
circuit-breaker. The shunt release has a relay-coil
with integrated contact which disconnects the
coil and the actuating voltage after the cir-
cuit-breaker has tripped.
When special switch or control units are
flameproof-encapsulated in these module
enclosures, details relating to the properties and
use of these modules shall be taken from the
respective supplementary sheet.
The data according to sections 3 and 4 shall be
taken into account during use.
Applications other than those described are not
permissible without a written declaration of
consent from the manufacturer.
During operation the instructions stated in
section 7 of the operating instructions shall be
observed.
The sole responsibility with respect to the
suitability and proper use of these modules lies
with the operator.
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