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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 must
reach up to the terminal or the socket
contact pins and plug pins. The
conductor itself must not be damaged.
In the case of mixed Ex-e / Ex-i
installations, the required minimum
clearances shall be maintained (see, for
example, EN 60 079-11 and EN 60 079-14).
When apparatus is open, it is necessary to
ensure (disconnect voltage supply) that
no voltage is carried over into any
connected intrinsically safe circuits.
The correctly stripped wires of the cable shall
be connected according to the relevant
regulations as follows (plug pins and socket
contact pins are included loose with the plugs
or the 21-pole socket and coupler).
6.2.1
Plug, 7-pole
1.
First remove the pressure piece, Item
3,of the plug by undoing the screws,
Item 2. (see P15; fig.5)
2.
Then undo the 2 fixing screws of the
plug sleeve, Item 5, and separate the
sleeve from the plug insert (see Fig. 4).
3.
To open the pull relief of the cable,
Item 7, undo the screws, Item 8. It can
then be removed from the plug insert
(see Page15; Figs. 5 and 6).
4.
Now, as described in Section 6.2.3,
the connected plug pins can be
inserted into the drilled holes of the
plug insert.
5.
The connected cable shall be safe-
guarded against being pulled out of the
plug insert by means of the pull relief.
Then, to assemble the plug, proceed in the
reverse order (see also Section 6.4).
6.2.2
Plug, 21-pole
1.
First, unscrew the trumpet-shaped
gland, Item 15, from the plug sleeve,
Item 5, by undoing the pull relief lug,
Item 14, with the 2 cylinder head screws
(see page 15; fig 7)
Explosion-protected plugs and sockets, 7-pole
GHG 511 .7.. / 592 and 21-pole GHG 511 .9.. / 591
2.
Then undo the 2 fixing screws, Item 4,
of the plug sleeve, Item 5, and
separate the sleeve from the plug
insert, Item 6 (see P15; Fig. 7).
3.
Now, as described in Section 6.2.3,
the connected plug pins can be
inserted into the drilled holes of the
plug insert.
4.
The connected cable shall be fed into
the trumpet-shaped gland, Item 15,
the seal, Item 13, and the plug sleeve,
Item 5, in the given order. (s. P.15;F.7)
Then, to assemble the plug, proceed in the
reverse order (see also Section 6.4).
6.2.3
6.2.3
Connection of plug pins and
Connection of plug pins and
6.2.3
6.2.3
6.2.3
Connection of plug pins and
Connection of plug pins and
Connection of plug pins and
socket contact pins
socket
socket
socket
socket
contact pins
contact pins
contact pins
contact pins
The stripped wires of the connection cable
are pushed into the connection opening of the
plug pins, Item 10, or the connection opening
of the socket contact pins, Item 9, and
crimped on using a special crimping tool,
Item 11 (available from the manufacturer,
Messrs. COOPER CROUSE-HINDS, on
request) (see Fig. 9, page 15).
The socket contact pins, Item 9, of the 7-pole
socket are connected to the interlocking
switch in our factory.
Optionally, the pin and socket pin connections
can be soldered on, whereby an additional
shrink-on sleeve is fitted over the solder
connection.
After connection, the socket contact pins or
plug pins are pushed into the socket or plug
insert from the rear until they reach the stop
(can be done using normal hand pressure)
(see page 15; Fig. 8).
A description of how to dismantle the contact
pins or plug pins can be found in Section 8,
Repair / Overhaul / Modifications (see also
page 15, Figs. 11, 12 and 13).
Unused socket pin and plug pin openings
are to be sealed with the socket pins, Item 9,
and plug pins, Item 10, that are included in
the scope of delivery.
Before closing the sockets, couplers or
plugs, check to ensure that all the contact
pins or plug pins fit correctly.
The min. and max. connectible cable
cross sections shall be observed (see
technical data).
All the screws of the connection terminals,
including the unused ones, shall be tightened
down.
To maintain the type of protection, all
conductors shall be connected with
special care.
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 interna-
tional rules (e.g. use of sleeves for strands).
Warning:
If any fixing screws are missing, they shall
be replaced by screws of the same type or
ordered directly from the manufacturer.
6.3
Cable entries (KLE);
blanking plugs
6.3.1
Socket
Generally, only certified cable entries and
blanking plugs are permitted for use.
Flexible cables shall be used with
trumpet-shaped cable glands or other
suitable entries with additional pull-relief.
When using cable entries with a lower IP
protection than that which applies to the
device (see page 9, technical data), the IP
protection of the whole device will be
reduced.
The mounting directives applicable to the
cable entries used shall be observed.
Unused holes shall be closed with a certified
blanking plug in order to establish the
minimum protection category.
In case of sealing inserts that are cut to size,
it shall be ensured that the insert is properly
adapted to the cable diameter.
Care has to be taken that, when fitting the
cable entries, sealing inserts appropriate to
the cable diameter are used.
Intrinsically safe circuits shall be fed through
cable entries that are colour-coded (light
blue).
In order to ensure the required minimum
protection category, the cable glands are to
be tightened down.
Overtightening might impair the
protection category.
All unused metric COOPER CROUSE-
HINDS cable entries shall be closed with
the certified blanking plug for metric
cable entries.
Cooper Crouse-Hinds GmbH
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