MTL MTL5000 Series, Инструкция по эксплуатации

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6 INM5000-6 Jul 2010
ETM7 Earth terminal, bag of 50 (figure 4.11)
For terminating cable screens and 0V returns on the ERL7 earth rail.
For cables
≤
4mm 2 .
TH5000 Tag holder
Spares replacement.
Connectors
Spares replacement: HAZ1-3, HAZ4-6, HAZ-CJC, PWR5000, SAF7-9,
SAF10-12 (SAF1-3 and SAF4-6 grey connectors, also available for use
in safe-area applications).
4.2.2 Assembly
4.2.2.1 Fitting earth rails
a) In upper position
Before fitting insulating mounting blocks IMB57, check that the
swing nuts in the base of each unit are turned back into the
moulding. Locate the mounting blocks on the DIN rail in the
chosen position and tighten the screws (see figure 4.12). Check
that the swing nuts rotate correctly to locate underneath the
flanges of the DIN rail.
Slide a straight earth-rail bracket ERB57S into the upper slot in
each mounting block. Push two plastic push fasteners into each
bracket to locate the brackets in the mounting blocks.
Cut earth rail ERL7 to the length needed. Slide the required
number of ETM7 earth terminals (5mm or 7mm wide) onto the
rail. Clamp each end of the earth rail to earth-rail brackets
ERB57S using the terminal clamps (14mm, 35mm
2
) supplied. Fit
an earth clamp (10mm, 16mm
2
) to the free end of each earth-rail
bracket.
Note: For lengths of earth-rail greater than 500mm,
provide additional support by installing a third IMB57 mounting
block and earth-rail bracket, mid-way between the end mounting
blocks. Snap out the perforated extension between the lugs on
this mounting block if a continuous tagging strip is to be fitted
(see figure 4.3).
b) In lower position, where at least 150mm clearance exists
on one side, measured from the edge of the mounting
block.
As for a), but slide earth-rail brackets ERB57S into the
lower slots in each mounting block.
c)
In lower position, where there is insufficient clearance to fit
earth-rail brackets ERB57S.
As for a), but slide offset earth-rail brackets ERB57O into
the upper slot in each mounting block before assembling
the mounting blocks to the DIN rail. ERB57S brackets
cannot be used because they obscure the mounting
blocks' fixing screws.
4.2.2.2 Fitting tagging strips
Assemble mounting blocks IMB57 to the DIN rail as above. Cut TAG57
tagging strip and label to the length needed, and insert label so that the
appropriate side is visible. Clip the strip onto the lugs on the mounting
blocks. Hinge up the strip to provide access to the tops of the isolators.
Note: If necessary, provide additional support for long lengths of
tagging strip by installing an extra IMB57 mounting block mid-way
between the end mounting blocks. Snap out the perforated extension
between the lugs on this mounting block.
4.2.3 Completed assemblies
Figure 4.13(below) illustrates a complete assembly of MTL5000 isolators
using the accessories mentioned above.
The broken-line boxes either side of the assembly represent cable
trunking, and the accompanying dimensions represent the minimum
spacing between trunking and assemblies.
For further information on the use of the accessories please refer to the
relevant MTL customer drawings listed in section 8.
5.5
mm 7mm
Type A Type B
110mm 110mm
Figure 4.11: ETM7 Earth terminal
Figure 4.12: Fitting IMB57
Figure 4.13: MTL5000 Series - complete assembly
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