Opening Apparatus/Electrical Connection; Cable Entries (Kle); Blanking Plugs - Eaton CROUSE-HINDS Serie Betriebsanleitung

Fig� 8
Connection of bolt terminals up to 240 mm²
Fig� 8�1
Cables connection with
bus bar system terminal
66
Explosion-protected distributions GHG 619; EXKO
6.2

Opening apparatus/Electrical connection

Before opening the distribution enclosure, it
is necessary to ensure that the distributions
are isolated from the voltage supply or to
take suitable protective measures.
The electrical connection of the apparatus
must be carried out by electrical suitably
trained in hazardous area with knowledge of
increased safety explosion protection and
IEC/EN 60079-14.
The properly bared conductors of cables shall be
connected with due regard to the respective
regulations� To maintain the explosion protection,
conductors shall be connected with special care�
The insulation shall reach up to the terminal.
The conductor itself must not be damaged.
The minimum and maximum connectable
conductor cross sections are to be observed�
The test torques are specified by the manufac-
turer in cap� 10 have to be observed�
All screws and/or nuts of the connection
terminals, including those not in use, shall be
tightened down securely�
The built-in standard terminal is designed for
the direct connection of conductors with copper
wires�
The bus bar in the terminal bus bar mount from
above� The connecting cables from the bottom
to introduce into the busbar terminal�
See figure 8�1�
Warning: The cable lugs shall be crimped
onto the cable in a workmanlike manner. It
is necessary to ensure that the minimum
required clearances are maintained
(<12 mm for 690 V).
If connection terminals up to 240 mm² (bolt
terminals) are built into the terminal boxes,
these terminals shall be wired as shown in
Fig� 8, (max� 2x 240 mm²)�
In the case of mixed Ex-e / Ex-i installations, the
required minimum clearances shall be
maintained (see, for example, IEC/EN 60079-11).
The instructions for the installation of
intrinsically safe electrical apparatus shall be
observed.
It is necessary to ensure that the permissible
external capacitance and inductance for the
specific intrinsically safe circuit are not
exceeded.
When the apparatus is open, it is necessary
to ensure (isolate voltage) that there is no
voltage transmission to the connected
intrinsically safe circuits.
The circuit diagram for the built-in components
is either shown on the components, enclosed
with the switch unit, or shown in the operating
instructions� In the case of wired control units,
the connection diagram included with the
apparatus is to be observed�
When using multi- or fine-wire connection
cables, the wire ends shall be treated in
accordance with the valid national and
international regulations (e�g� use of cable end
sleeves)�
!
In the case of building up the electrical
equipment in the "protective insulation" version,
appropriate sticker
( ) GHG 905 1002 P0005 can be requested
by the manufacturer�
!
If the inserted terminal rail is not equipped
completely with line-up terminals, the terminal
rail must be included in the equipotential earth
connection also�
To ensure that the distribution enclosure closes
properly and to avoid damage, switching at the
switch shafts of the switch inserts is prohibited
when the apparatus is open or the cover is only
replaced loosely�
If a flameproof component is disassembled,
before it is connected to the electric power
supply, it is necessary to ensure that the
components are put back into the distribution
enclosure correctly�
For actuating the flameproof protective
components (circuit breakers / ELCBs RCDs),
the actuating flap may also be opened while the
circuit is live�
Overtightening can damage the enclosure or
impair the sealing effect.
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 .
The relevant mounting directives for the
built-in cables entries shall be observed.
GB