3-20 | Model 933S UV Analyzer
European Installation
To maintain EMC compliance in European installations, AMETEK
recommends using metallic glands and shielded cable (at least 85 %
coverage) for both power and signal cable connections.
To make the AC power connections in the Ex d Lower Enclosure:
• The AC electrical supply cable must be approved by the local wiring
regulations and electrical codes for the hazardous location, and must
be rated for minimum 80 °C (176 °F). This cable enters the Ex d Lower
Enclosure through the Power Cable Entry on the bottom of the Ex d
Enclosure (Figure 3-7).
• The AC power connections are made at the terminals designated “H”,
“N”, and “PE” (at TB1) on the AC Terminal Strip (Figure 3-7, Detail A).
For Division 1/Zone 1 Installations, all cable entry glands (one power
cable entry and two signal cable entries) into the flameproof Discon-
nect Enclosure must be Ex d certified. Conduit or cable seals that
comply with the flameproof enclosure cable entry sealing requirements
of the local authority must be installed at the entries to the enclosure.
In all cases, each unused cable entry port must be plugged with a
certified Ex d plug.
North American Installation
To make the AC power connections in the Lower Enclosure:
The AC power connections are made at the terminals designated “H”,
“N”, and “G” (at TB1) on the AC Terminal Strip (see North American Style
drawing in Appendix A, or Final “As-Built” drawings, if ordered, in the
analyzer Documentation Package).
!
WARNING
NOTE
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