16
2
Safety instructions
The modules GHG 61. 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, the
terminal cross section and the self-heating of
the apparatus, that is mainly caused by the
power dissipation are to be observed to
ensure that the temperature class stated on
the type label of the apparatus is maintained.
(Test criterion for the self-heating is an
overload of 10%).
The temperature class of the complete
installation or distribution is determined by
the power dissipation of all the built-in
modules and components.
The apparatus shall be used for the intended
purpose and shall be in a perfect and clean
state.
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 60204-1:2005.
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.
3
Conformity with standards
The apparatus are 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
Modules of the series GHG 61. may be built into
enclosures in the type of protection ”increased
safety”. 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”
- polyester reinforced with glass fibre
- special steel AISI 316 L.
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, relays, contactors, etc. that
give off arcs or sparks during normal operation
and, as a result, could ignite an existing
potentially explosive atmosphere.
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 and ELCBs (RCDs) are
flameproof encapsulated in the enclosures, after
several short circuits it is necessary to test the
modules to ensure that they function correctly.
An ELCB(RCD) does not prevent the feeling
caused by an electric shock, but limits the
duration of the current flow through the human
body to such an extent that the probability of its
being fatal is reduced to a negligible value.
After the cause for tripping has been eliminated,
reset the ELCB (RCD) by switching the toggle
switch to the ”ON” position.
Flameproof module, series GHG 61. .... R....
Fig. 1
Item 1
Item
3
Item
2
The manufacturer of the ECD (ELCB) recom-
mends to test the function by the test button
Fig. 1, Item 2, twice yearly.
A signal contact (optional) on a circuit breaker or
ELCB is actuated by an overload, earth fault or
short circuit. It cannot, however, be tripped if the
circuit breaker is switched manually.
When switching on the signal contact, first of all
the actuating switch of the circuit breaker, Fig. 1,
Item 3, has to be switched on. After this, the
rotary switch of the signal contact, Item 1, can
be actuated.
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.
Adequately marked special versions of the
control units can be operated in „intrinsically safe
circuits“. The electric limiting values applicable to
„intrinsic safety“ shall be observed.
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.
6.1 Mounting
Before mounting the modules, it is necessary to
check them to ensure that they are in perfect
condition. Special attention shall be given to any
possible transport damages (cracks and damage
to the flameproof encapsulation or any other
damage to the modules).
The modules can be mounted by snapping them
onto a DIN rail or screwing them onto an internal
mounting plate (Test torque 2.5 Nm).
When mounted directly onto an internal
mounting plate, the enclosures shall be fixed in
such a way that they rest evenly on the fastening
points provided for this purpose and that they
cannot turn.
The screws used shall match the fixing hole (see
dimensions drawing) and shall not damage the
hole (e.g. use of a washer).
If the fixing screws are overtightened, the
apparatus may be damaged.
