Pending
Appendix C
This Appendix applies to TraceNet TC Series panels with purge equipment. The TC
Series panels have been certified to be in compliance with IEC 60079-0: 2011 and IEC
60079-2: 2007.
MARKINGS FOR TC SERIES PANELS
The panels shall be marked IECEx FMG 11.0028X Ex pxb IIC T4 Ta = -20
◦
C to +50
◦
C,
for Zone 1 applications.
The panel shall be marked IECEx FMG 11.0028X Ex pzc IIC T4 Ta = -20
◦
C to +55
◦
C,
for Zone 2 applications.
SUPPLY LINES FOR PROTECTIVE GAS
a. The point at which the protective gas enters the supply lines(s) shall be situated in a
non-hazardous location.
b. The intake line(s) to a compressor should not pass through a hazardous area. If the
compressor intake line passes through a hazardous area, it should be constructed of
noncombustible material and protected against mechanical damage and corrosion.
c. The purge duration shall be increased by the time necessary to purge the free volume
of the associated lines (if applicable) which are not a part of the certified panel by at least
five times their volume at the minimum flow rates (see panel markings) specified by the
manufacturer.
POWER FOR PROTECTIVE GAS SUPPLY
The electrical power for the protective gas supply shall be taken from a power source
separate from the power source of the panel.
ENCLOSURE MAXIMUM OVERPRESSURE
The purge equipment inlet pressure shall be limited to 120 PSI.
44
PN 50312_0414
Summary of Contents for TraceNet TCM18
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