Opening Apparatus / Electrical Connection; Cable Entries (Kle); Blanking Plugs - Eaton Crouse-Hinds Série Mode D'emploi

Fig. 1
1
2
Control switch, GHG 292 and control switch with
measuring instrument, GHG 293
6.2 Opening apparatus /
Electrical connection
Before opening the apparatus, it is neces-
sary to ensure that there is no voltage or to
take suitable protective measures.
The electrical connection of the may only be
carried out by specialists.
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 shall not be damaged.
The minimum and maximum conductor
cross sections that can be connected shall
be observed (see technical data).
In the case of mixed Ex-e / Ex-i installations,
the required minimum clearances shall be
maintained (see, for example,
IEC/EN 60079-11).
When apparatus is open, it is necessary to
ensure (disconnect voltage supply) that no
voltage is carried over into the connected
intrinsically safe circuits.
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 connecting 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 terminals can be found in
the connection diagram or the diagram showing
the contact arrangement of the switch insert on
page 8.
With measuring instruments for c.t. connection
n/1A (Fig. 1) the interchangeable scale, item 1,
can be exchanged via a flap, item 2, on the
upper part of the measuring instrument.
To ensure a correct closing of the manual motor
starter, switching at the switch shaft of the
switch insert when the apparatus is open is not
permitted.
If, to facilitate the feeding of conductors into the
enclosure, the switch insert is snapped out of
the rail on the enclosure base by releasing the
catches (top or bottom on insert), it shall be
snapped back properly into the same notch in
the enclosure base before the electrical
connection. 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 (pay
attention to the correct position of the switch
handle).
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.
When using cable entries with a degree of
protection that is lower than the IP protection of
the apparatus (see page 8), the degree of IP
protection for the complete unit is reduced.
The relevant mounting directives for cables
entries being used shall be observed.
In order to ensure the minimum degree of
protection, any unused entry holes shall be
sealed with certified blanking plugs.
When fitting cable entries, care has to be taken
that the sealing inserts are suitable for the cable
diameter.
In the case of sealing inserts that are cut out,
it is necessary to ensure that the insert is
properly adapted to the cable diameter.
Intrinsically safe circuits shall be fed through
cable entries that are colour-coded (light blue).
In order to ensure the required minimum
degree of protection, the cable entries shall be
tightened down securely.
Overtightening can impair the degree of
protection.
Warning: When tightening the cap nut of the
metal cable entry (e.g. type ADE 1F),
a suitable tool shall be used to safeguard
the gland against twisting.
Any unused metric CCH / CEAG cable entries
shall be sealed with the blanking plug certified
for these metric cable entries.
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