Electrical Installation; Cable Entries; Selection Of Cables - SPM intellinova compact INS06 Ex Assembly, Installation And Operation Instructions

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Cable Entries

For type "Ex nR" and "Ex tc" explosion-proof Intellinova
System units, only those cable and conductor entries and
plugs that possess an EC type-examination certificate
(Category 3 G or 3 D) issued by a European Notified Body
as per European Standards EN 60079-0, EN 60079-7, EN
60079-15 and EN 60079-31 may be used.
The cable and conductor glands must be installed to
prevent self-loosening and to ensure permanent sealing
of the cable and conductor entry points.
The spacing between the cable glands is such that a
torque wrench can be used to secure the gland bodies
in the enclosure wall and to tighten the seals around the
cables.
Intrinsically safe circuits must enter and leave the enclo-
sure via separate cable glands that are specially marked
with a light blue color.
If any cable and conductor glands are not used or are no
longer needed, the holes and redundant gland bodies
must be blanked off with suitable blind plugs or caps.
The cabinet has the following cable glands:
A. One cable gland M20 x1.5 for power supply cable,
cable diameter 6 to 12 mm.
B. Three cable glands M16 x1.5 for digital in DI/RPM
cables, cable diameter 4.5 to 10 mm.
C. Two cable glands of type M25 x1.6 for up to four
measuring cables each with diameter 4.5 to 6 mm.
D. One cable gland of type M16 x1.5 for a standard
Ethernet cable with cable diameter 4.5 to 10 mm.
E. Two cable glands of type M16 x1.5 for Intrinsic
Safety Earth, cable diameter 4.5 to 10 mm.

Electrical Installation

E E D D A A F F
BOTTOM VIEW
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F. Markings for additional six cable glands intended
®
for digital / analog signal cables and extra Ethernet
cables. Holes have to be drilled if needed for the
installation. Drill the holes in the punch marks and
mount cable glands of type M20 x1.5 or M16 x1.5.
G. Cable gland not intended to be used as cable en-
try. This cable gland is intended to be used as test
port, see "Periodic Pressure Testing" on page 19.
Cable gland torque moment to be followed
Cable gland
size
M16 x1.5
M20 x1.5
M25 x1.5

Selection of Cables

Use only cables and conductors that meet the following
minimum requirements:
• Made of thermoplastic, thermosetting or elasto-
meric materials
• Exceptionally firm and circular
• Only extruded embedding material between the
individual cores
• No hygroscopic fillers used
• Cables currently fulfil IEC 60079-14
SPM Instrument can supply sensor cables that fulfil re-
quirements of testing according to IEC 60079-14.
– 7 –
PE Earth screw
B B E E
Tighten torque
Connection thread Pressing nut
(Nm)
2.5
3.3
3.3
(Nm)
3.75
3.75
3.75