· iec60079-28:2006 explosive atmosphere — part 28: protection of equipment and transmission...

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Page 1: · IEC60079-28:2006 Explosive atmosphere — Part 28: Protection of equipment and transmission systems using optical radiation Ex d [op is] 11 c T4 Ga/Gb GYJ14.1337X 2. 3. 4. ákJ

Page 2: · IEC60079-28:2006 Explosive atmosphere — Part 28: Protection of equipment and transmission systems using optical radiation Ex d [op is] 11 c T4 Ga/Gb GYJ14.1337X 2. 3. 4. ákJ

Page 3: · IEC60079-28:2006 Explosive atmosphere — Part 28: Protection of equipment and transmission systems using optical radiation Ex d [op is] 11 c T4 Ga/Gb GYJ14.1337X 2. 3. 4. ákJ

Page 4: · IEC60079-28:2006 Explosive atmosphere — Part 28: Protection of equipment and transmission systems using optical radiation Ex d [op is] 11 c T4 Ga/Gb GYJ14.1337X 2. 3. 4. ákJ

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