Cooper Crouse-Hinds GmbH
13
13
13
13
13
Explosion-protected safety switches for variable
frequency drives, 20A - 180A
Fig. 8
Fig. 9
1
Mounting plate
2
Self cutting screws
3
Mounting set M5
4
Fixing screws
5
Sealing sleeve
6
Seal
7
Perforated plates
8
Clamp ring
9
Enclosure base
10
Double cable end box - upper part
11
Double cable end box - base part
12
Fixing screws for cover
13
Cable bushings
14
Semi-clamp
Mounting of double cable end piece*
1
2
5
8
6
7
4
3
Mounting parts, double cable end piece*
9
14
1 / 2
6
4
8
10
12
13
11
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 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).
Refer to the wiring diagrams on page 11 for
the position of the connection terminals. An
example of one possible circuit arrangement
is shown in Fig. 5, page 11.
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.
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.
The safety switches GHG 262, GHG 263 and
GHG 264 shall be fixed diagonally with a
minimum of 2 screws.
The safety switch GHG 266 shall be fixed with
a minimum of 4 screws.
If the screws are overtightened, the
apparatus may be damaged.
The safety switch GHG 262 are suited for
mounting on CCH / CEAG apparatus holders
size 3, by means of self-cutting screws (see
Fig. 6).
The safety switches GHG 263 (6-pole), GHG
264 and GHG 266 are suited for mounting on
two CCH / CEAG apparatus holders size 3
by means of self-cutting screws (see Fig. 7).
See the respective mounting instructions.
6.2
Opening the device/
Electrical connection
The electrical connection of the apparatus
may only be carried out by skilled staff.
Before opening the apparatus, ensure that
it has been isolated from the voltage
supply, or take appropriate protective
meassures.
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.
To maintain the explosion protection, con-
ductors shall be connected with special care.
The insulation shall reach up to the terminal.
The conductor itself shall not be damaged.
The minimum and maximum conductor
cross sections that can be connected shall
be observed (see technical data).
If desired, the safety switch GHG 264 (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
maintained (at 690V >12mm).
In the case of mixed Ex-e / Ex-i
installations, the required minimum
clearances shall be maintained (see, for
example, EN 50 020 and EN 60 079-14).
When apparatus is open, (isolate voltage
supply) , it is necessary to ensure that no
voltage is carried over into the connected
intrinsically safe circuits.
6.3
Cable entries (KLE);
blanking plugs
Generally, only certified cable entries and
blanking plugs may be used.
Flexible cables shall be used with trumpet-
shaped cable glands or other suitable
entries with additional pull-relief.
The relevant mounting directives for the
cable entries fitted shall be observed.
See Figs. 8 and 9 for details of how to
mount the double cable end box * :
Unscrew the 2 fixing screws, Item 4, and the
3 fixing screws, item 12 of the upper part,
item 10, and remove the upper part.
Loosen the clamps, item 14, of the strain-relief.
The cable sleeves, item 13, have to be cut to
match the cable diameter.
After fitting the cable, the cable sleeve, item
13, is to be sealed by means of the respective
clamp ring, item 8.
Finally, the upper part, item 10, is fitted and
screwed down with the fixing screws, item 4
and item 12, and the pull-relief, item 14, is
put back into place.
*
not yet certified for category II D
