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The user alone is responsible for the
appropriate use of this maintenance and
repair supply socket distributions in consider-
ation of the basic conditions existing at the
plant (see Technical data).
6
Installation
The respective national regulations as well as the
general rules of engineering shall be observed
for the mounting and operation
(IEC/EN 60079-14).
The improper installation and operation of
maintenance and repair socket distribution
may result in the invalidation of the guaran-
tee.
6.1 Mounting
The maintenance and repair supply socket
distributions can be mounted without opening
the enclosures.
When the socket distributions are mounted
directly onto the wall, the distributions shall rest
evenly only at the fastening points provided for
them.
The chosen screw shall match the fastening hole
(see dimensional drawing).
The socket distributions shall be fixed with four
screws minimum.
6.2 Opening the device/
Electrical connection
The electrical connection of the apparatus
may only be carried out by specialized
personnel (IEC/EN 60079-14).
Before opening the apparatus (safety switch),
ensure that it has been isolated from the
voltage supply, or take appropriate protective
measures.
Before opening, set the switch to the "ON"
position.
The properly bared conductors of cables shall be
connected with due regard to the respective
regulations.
The conductors shall be connected with
special care in order to maintain the
explosion category.
To maintain the explosion protection, conduc-
tors shall be connected with special care.
The insulation shall reach up to the terminal.
The conductor itself shall not be damaged.
Maintenance and repair supply socket distributions, GHG 981
The minimum and maximum conductor cross
sections that can be connected shall be
observed (see Technical Data, page 9).
If desired, the safety switch 80A can be
connected using 35 mm² cable lugs
(DIN 46 234 / 8-35).
Attention: The cable lugs should be crimped
onto the cable in a workmanlike manner.
It is to be ensured that the required min. air
gaps are kept (at 690V >12mm).
All screws and/or nuts of connection terminals,
including those not in use, shall be tightened
down securely.
Excessive tightening may affect or damage
the connection.
The supply terminals are designed for the direct
connection of conductors with copper wires.
If multi- or fine-wire connection cables are used,
the wire ends shall be handled according to the
applicable national and international regulations
(e.g. use of multicore cable ends).
The position of the connection terminals is
shown in the wiring diagrams on pages 8 and 9
of these operating instructions.
To ensure that the safety switch closes correctly,
switching at the switch shaft of the switch insert
is not permitted when the apparatus is open.
In order to guarantee the functioning and
efficiency of the ELCB (RCD), the maximum
permissible earth resistances specified in the
installation requirements shall be observed.
If, to facilitate the feeding of conductors into the
enclosure, the switch insert is removed from the
enclosure base, it shall be put back correctly
before the electrical connection is made.
6.3
Cable entries (KLE);
blanking plugs
Generally, only certified cable entries and
blanking plugs may be used.
Trumpet-shaped cable glands or other
suitable entries with additional pull-relief
shall be used for flexible cables.
When using cable entries with a lower IP
protection than that which applies to the device
(see pages 8+9, Technical Data), the IP
protection of the whole device is reduced.
The mounting directives applicable to the
cable entries used shall be observed.
Unused holes shall be sealed with a certified
blanking plug in order to establish the minimum
protection category.
EATON's Crouse-Hinds Business
In case of sealing inserts that are cut to size, it is
necessary to ensure that the insert is properly
adapted to the cable diameter.
When fitting the cable entries, taken that the
sealing inserts are case shall be appropriate for
the cable diameter.
In order to ensure the required minimum
protection category, the cable glands shall be
tightened down.
Overtightening might impair the protection
category.
Warning: When tightening the cap nut of the
metal cable entry (e.g. type ADL/ADE),a suita-
ble tool shall be used to safeguard the gland
against twisting.
All unused metric COOPER CROUSE-HINDS /
CEAG cable entries shall be closed with the
certified blanking plug for metric cable entries.
6.4 Flanges, metal plates and
external earth connection
If flange plates have to be dismantled, (e.g. to
drill entry holes), when replacing the plates, in
order to maintain the minimum degree of
protection, it is necessary to ensure that the
flange plate and the fixing clamp fit correctly.
PE conductors fed from outside shall be
connected to the PE terminal provided on the
flange.
If a separate external earth connection is
mounted on the moulded plastic enclosure,
connection shall be made using a cable with a
max. cross section of 25 mm².
Inside the enclosure this external earth
connection is designed for a cable lug connec-
tion with an M6 borehole (see Fig. 2).
Warning: Metal flanges, metal plates and
metal glands shall be incorporated in the
potential equalization.
6.5 Closing apparatus
Any foreign matter shall be removed from the
apparatus.
The switch handle on the cover of the switch is
to be set to the "ON" position.
When fitting the apparatus cover, care shall
be taken to ensure that the switch shaft of
the switch insert engages correctly in the
carrier hole of the switch handle.
13
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