Nematron iPC Series - Page 13

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Document No. DOC-IPC-003,
User Manual iPC-Series & nPC300, Rev C Rel. 11-2014 Page 13 of 27
CONDITIONS FOR SAFE USE IN ATEX GROUP IIC (ZONE 2)
INSTALLATIONS ONLY -
UNITS NEED TO BE INSTALLED IN AN APPROVED ATEX RATED
ENCLOSURE ACCORDING TO THE FOLLOWING CRITERIA:
 INSTALLATION WITHIN END-EQUIPMENT THAT PROVIDES AN INTERNAL
“MICRO-ENVIRONMENT” * OF POLLUTION DEGREE 2 OR BETTER:
FOR THIS INSTALLATION OPTION, THE OPEN-TYPE IPC-SERIES AND NPC300
INDUSTRIAL COMPUTERS SHALL BE INSTALLED WITHIN END-EQUIPMENT
THAT COMPLIES WITH ALL OF THE FOLLOWING CONDITIONS:
1. THE ENCLOSURE OF THE END-EQUIPMENT SHALL PROVIDE A DEGREE
OF PROTECTION NOT LESS THAN IP 64 IN ACCORDANCE WITH IEC/EN
60079-15; AND
2. THE END-EQUIPMENT SHALL PROVIDE AN INTERNAL ENVIRONMENT OF
POLLUTION DEGREE 2 OR BETTER, AS DEFINED IN IEC/EN 60664-1; AND
3. TRANSIENT PROTECTION SHALL BE PROVIDED THAT IS SET AT A LEVEL
NOT EXCEEDING 140 % OF THE PEAK RATED VOLTAGE VALUE AT THE
SUPPLY TERMINALS TO THE END-EQUIPMENT; AND
4. ENCLOSURE MUST UTILIZE A TOOL REMOVABLE COVER, DOOR, OR
PANEL.
 INSTALLATION WITHIN AREAS THAT PROVIDE AN EXTERNAL “MACRO-
ENVIRONMENT” ** OF POLLUTION DEGREE 2 OR BETTER:
FOR THIS INSTALLATION OPTION, THE OPEN-TYPE IPC-SERIES AND NPC300
INDUSTRIAL COMPUTERS SHALL BE INSTALLED WITHIN END-EQUIPMENT
THAT COMPLIES WITH ALL OF THE FOLLOWING CONDITIONS:
1. THE END-EQUIPMENT SHALL BE USED IN A POLLUTION DEGREE 2 OR
BETTER AREA, AS DEFINED IN IEC/EN 60664-1; AND
2. THE ENCLOSURE OF THE END-EQUIPMENT SHALL PROVIDE A DEGREE
OF PROTECTION NOT LESS THAN IP 54 IN ACCORDANCE WITH IEC/EN
60079-15; AND
3. TRANSIENT PROTECTION SHALL BE PROVIDED THAT IS SET AT A LEVEL
NOT EXCEEDING 140 % OF THE PEAK RATED VOLTAGE VALUE AT THE
SUPPLY TERMINALS TO THE END-EQUIPMENT; AND
4. ENCLOSURE MUST UTILIZE A TOOL REMOVABLE COVER, DOOR, OR
PANEL.
*THE TERM “MICRO-ENVIRONMENT”, PER IEC 60664-1, IS DEFINED AS THE
“IMMEDIATE ENVIRONMENT OF THE INSULATION WHICH PARTICULARLY
INFLUENCES THE DIMENSIONING OF THE CREEPAGE DISTANCES” (INSIDE
ENCLOSURE).
**THE TERM “MACRO-ENVIRONMENT”, PER IEC 60664-1, IS DEFINED AS AN
“ENVIRONMENT OF THE ROOM OR OTHER LOCATION IN WHICH THE
EQUIPMENT IS INSTALLED OR USED” (OUTSIDE ENCLOSURE).