Opening Apparatus/Electrical Connection - Eaton CROUSE-HINDS serie Betriebsanleitung

Fig� 7
Apparatus holder for pipe mounting, size 3
A = Fixing holes for size 1
distribution enclosures
Apparatus holder for wall and trellis mounting,
size 3
A = Fixing holes for size 1
distribution enclosures
48
Explosion-protected distributions GHG 619
Individual moulded plastic distribution boxes are
suited for mounting on Size 3 apparatus holders
using self-tapping screws (see figs� 7 and 7a)�
The mounting instructions for the apparatus
holder shall be observed�
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�
Fig� 7a
A
A = Fixing holes for:
size 2 distribution enclosures
size 3 distribution enclosures
size 4 distribution enclosures
The built-in standard terminal is designed for
the direct connection of conductors with copper
wires�
DIN cable lugs shall be used to connect the
built-in bus bars and bolt terminals�
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).
Observe the datas and notes regarding the bus
bar system GHG758 in the operating instruction
GHG 750 7002 P0001, enclosed separately�
If connection terminals up to 240 mm² (bolt
terminals) are built into the terminal boxes,
these terminals shall be wired as shown in
Fig� 10, (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.
2 x apparatus holders, size 3, for pipe mounting, horizontal
(Dimension X = 0 mm)
(Dimension X = 267 mm))
(Dimension X = 540 mm)
GB
X