Special Condition of Use for Division 2/Zone
2 Hazardous Location Installation
For the United States
n The installer shall provide transient over-voltage protection
external to the apparatus such that the voltage at the supply
terminal of the apparatus does not exceed 140% of the voltage
rating of the equipment.
n The installation shall provide a controlled environment that limits
the pollution degree to the pollution degree 2 or better as defined
in IEC 60664-1.
n The equipment shall be mounted within a tool-secured enclosure
which meets the requirements of UL 60079-0 and UL 60079-7
and is capable of accepting the application wiring methods
specified in NFPA 70.
n The enclosure for the equipment shall provide a degree of
protection not less than IP54 in accordance with the test of
enclosure section of UL 60079-0 and UL 60079-7 unless the
equipment is afforded an equivalent degree of protection by
location.
For Canada
n The installer shall provide transient over-voltage protection
external to the apparatus such that the voltage at the supply
terminal of the apparatus does not exceed 140% of the voltage
rating of the equipment.
n The installation shall provide a controlled environment that limits
the pollution degree to the pollution degree 2 or better ad defined
in IEC 60664-1.
n The equipment shall be mounted within a tool-secured enclosure
which meets the requirements of CSA 60079-0 and CSA 60079-7
and is capable of accepting the application wiring methods
specified in CEC Part I.
n The enclosure for the equipment shall provide a degree of
protection not less than IP54 in accordance with the test of
enclosure section of CSA 60079-0 and CSA 60079-7 unless the
equipment is afforded an equivalent degree of protection by
location.
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Chapter 7 - Special Condition of Use and Approved Standards
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