JPEx Certification Standards

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JPEx Standards and IEC Counterparts

This page provides a list of Japanese technical standards (JNIOSH-TR-46 series) for explosion-proof electrical equipment and their corresponding international standards (IEC).

JPEx Standard Title IEC counterpart
JNIOSH-TR-46-1:2015Equipment - General requirementsIEC 60079-0:2011
JNIOSH-TR-46-1:2020Equipment - General requirementsIEC 60079-0:2017
JNIOSH-TR-46-2:2015Equipment protection by flameproof enclosures 'd'IEC 60079-1:2007
JNIOSH-TR-46-2:2018Equipment protection by flameproof enclosures 'd'IEC 60079-1:2014
JNIOSH-TR-46-3:2015Equipment protection by pressurized enclosures 'p'IEC 60079-2:2007
JNIOSH-TR-46-3:2018Equipment protection by pressurized enclosures 'p'IEC 60079-2:2014
JNIOSH-TR-46-4:2015Equipment protection by oil immersion 'o'IEC 60079-6:2007
JNIOSH-TR-46-4:2018Equipment protection by oil immersion 'o'IEC 60079-6:2015
JNIOSH-TR-46-5:2015Equipment protection by increased safety 'e'IEC 60079-7:2006
JNIOSH-TR-46-5:2018Equipment protection by increased safety 'e'IEC 60079-7:2015
JNIOSH-TR-46-6:2015Equipment protection by intrinsic safety 'i'IEC 60079-11:2011
JNIOSH-TR-46-7:2015Equipment protection by encapsulation “m”IEC 60079-18:2009
JNIOSH-TR-46-7:2018Equipment protection by encapsulation “m”IEC 60079-18:2014
JNIOSH-TR-46-8:2015Equipment protection by type of protection 'n'IEC 60079-15:2010
JNIOSH-TR-46-8:2020Equipment protection by type of protection 'n'IEC 60079-15:2017
JNIOSH-TR-46-9:2015Equipment dust ignition protection by enclosure 't'IEC 60079-31:2008
JNIOSH-TR-46-9:2018Equipment dust ignition protection by enclosure 't'IEC 60079-31:2013
JNIOSH-TR-46-11:2020Protection of equipment and transmission systems using optical radiationIEC 60079-28:2015