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Copyright © 2020 IEEE. All rights reserved.
Contents
1. Overview ..................................................................................................................................................... 9
1.1 Scope .................................................................................................................................................... 9
1.2 Purpose ................................................................................................................................................. 9
1.3 Application ........................................................................................................................................... 9
1.4 Word usage ........................................................................................................................................... 9
2. Normative references ................................................................................................................................ 10
3. Denitions, acronyms, and abbreviations ................................................................................................. 11
3.1 Denitions .......................................................................................................................................... 11
3.2 Acronyms and abbreviations .............................................................................................................. 12
4. Design requirements.................................................................................................................................. 12
4.1 Service conditions .............................................................................................................................. 12
4.2 Supply voltages .................................................................................................................................. 12
4.3 Electrical transient withstand capability ............................................................................................. 14
4.4 Electromagnetic compatibility ........................................................................................................... 16
4.5 Breaking and making capacity ............................................................................................................ 17
4.6 Temperature rise limits ....................................................................................................................... 17
4.7 Clearance and creepage distance ........................................................................................................ 19
4.8 Apparatus internal wiring requirements .............................................................................................. 20
4.9 Bus bar application ............................................................................................................................. 24
4.10 Printed circuit board design and construction ................................................................................... 24
4.11 Protective functions .......................................................................................................................... 25
4.12 Grounding and bonding .................................................................................................................... 26
4.13 Electro-pneumatic devices ............................................................................................................... 28
4.14 Electro-hydraulic devices ................................................................................................................. 28
4.15 Protective devices ............................................................................................................................. 28
4.16 Fiber optics ....................................................................................................................................... 29
4.17 Material requirements....................................................................................................................... 29
5. Testing requirements ................................................................................................................................. 29
5.1 General test requirements ................................................................................................................... 29
5.2 Operational test................................................................................................................................... 30
5.3 Environmental conditions testing ....................................................................................................... 31
5.4 Supply voltage testing ........................................................................................................................ 31
5.5 Electrical transient test ....................................................................................................................... 32
5.6 Electromagnetic compatibility test ..................................................................................................... 32
5.7 Breaking and making capacity tests .................................................................................................... 32
5.8 Temperature rise tests ......................................................................................................................... 32
5.9 Insulation testing ................................................................................................................................ 36
5.10 Environmental stress screening ........................................................................................................ 39
5.11 Settings and operation of protective apparatus, relays, and static circuits ......................................... 39
5.12 Tests for pneumatically-operated equipment .................................................................................... 40
5.13 Tests for hydraulically operated equipment ...................................................................................... 40
5.14 Measurement of resistance and impedance ....................................................................................... 41
Annex A (informative) Bibliography .............................................................................................................. 42
Annex B (normative) Uses of “authority having jurisdiction”........................................................................ 45
Annex C (informative) Recommended protective functions .......................................................................... 47
Annex D (informative) Classication of printed circuit boards ...................................................................... 48