User's Guide Part 1

Table Of Contents
Chapter 3: System planning Site planning
Hazardous locations
Check that the ODUs will not be exposed to hazardous gases, as defined by HAZLOC (USA) and
ATEX (Europe) regulations. If there is a risk of such exposure, then order the PTP 700
ATEX/Hazloc product variants, as these are intended for operation in locations with gas
hazards. The ATEX and HAZLOC standards limit the EIRP as shown in Table 50.
Table 50
EIRP limits from ATEX and HAZLOC standards
ATEX gas
group
HAZLOC gas
group
Typical gas type
Maximum EIRP
(Watt)
IIA D Propane 6
IIB C Ethylene 3.5
IIC B Hydrogen 2
IIC A Acetylene 2
Further reading
For information about…
Refer to…
Ordering Connectorized ATEX/HAZLOC ODUs Individual ODU part numbers on page 2-4
Ordering Connectorized+Integrated
ATEX/HAZLOC ODUs
Individual ODU part numbers on page 2-7
ATEX/HAZLOC standards and type approval
Hazardous location compliance on page 4-27
Deployment of ATEX/HAZLOC ODUs PTP 700 Series Hazardous Location Guide
PSU DC power supply
If using the DC input on the AC+DC power injector, ensure that the DC power supply meets the
following requirements:
The voltage and polarity must be correct and must be applied to the correct PSU terminals.
The power source must be rated as Safety Extra Low Voltage (SELV).
The power source must be rated to supply at least 1.5A continuously.
The power source cannot provide more than the Energy Hazard Limit as defined by
IEC/EN/UL60950-1, Clause 2.5, Limited Power (The Energy Hazard Limit is 240VA).
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