Subject 1699B

Bulletin Dated: October 15, 2013

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for Photovoltaic (PV) DC Arc-Fault Circuit Protection, STP 1699B:

1. Sandia Suggestions for UL 1699B

2. Discussion of the Definitions for Rated Voltage of a PV Array (PR19842 - Discussion Item 1)

3. Discussion of Addition of Switch S2 to Figure 27.3 (PR19842 - Discussion Item 2)

4. Change Series connection arcing test circuit (Figure 27.3) Add capacitor (PR19639)

5. Change Series connection arcing test circuit (Figure 27.3) Add (optional) parallel strings (PR19640)

6. Discussion of Revisions to Figure 27.4 for Parallel Arcing Test (PR19842 - Discussion Item 3)

7. Improvement of Figure 27.4 Parallel Path Arcing Test (PR19752)

8. Discussion of Loading Condition I - Inverters, converters, and charge controllers (PR19842 - Discussion Item 4)

9. PV AFCI Devices (PR19857)

10. Discussion of Revisions to Figures for Masking the Signal to Operate (PR19842 - Discussion Item 5)

11. Improvement of Figure 29.1 Masking Test with Arcing and Inverter (PR19751)

12. Improvement of Figure 29.2 Masking Test with Arcing and Multiple Strings (PR19753)

13. Improvement of Figure 47.2 Parallel Path Arcing Circuit (PR19754)

14. Clarification on need for resistor in 47.3 Series Connection Arcing Test (PR19755)

15. Discussion of Switching Rate in Overload and Endurance Tests (PR19842 - Discussion item 6)

16. Sensata Technologies Series Arc-Fault Testing and Recommendations for UL 1699B (PR19856)

17. Annunciator on PV Interrupting Device (PR19638)

18. Change Endurance Test Requirements (Section 32) (PR19643)

19. Revise Short Circuit Current Test (Section 34) (PR19644)

20. Revision of Requirements for Short Circuit Current Test (PR19842 - Proposal 7)

21. Clarification of the Requirements for the Short Circuit Current Test (PR19842 - Proposal 10)

22. Modify Marking requirements (Section 37.6) AC AFCI vs DC AFCI (PR19646)

23. Modify Marking requirements (Section 50.1) PV DC AF Circuit Protection (PR19647)

24. Revision of the Definitions for Type 1 and Type 2 Devices (PR19842 - Proposal 1)

25. Revision of the Requirements for Operating Mechanism (PR19842 - Proposal 2)

26. Addition to the Requirements for Test Circuit (PR19842 - Proposal 3)

27. Revision to the Requirements for Test Sequence (PR19842 - Proposal 4)

28. Clarification of the Test Sequence Requirements (PR19842 - Proposal 9)

29. Revision to the Requirements for Environmental Test Sequence (PR19842 - Proposal 5)

30. Method of arc initiation (PR19861)

31. Testing to Manufacturers Specifications (PR19862)

32. Revision of Requirements for Line Impedance (PR19842 - Proposal 6)

33. Miscellaneous Editorial Revisions (PR19842 - Proposal 8)

34. Discussion of Future of the Outline of Investigation, UL 1699B

35. PV System Output Circuit AFCI protection

36. UL Patent Policy

37. Harmonization of UL 1699B with Canadian requirements

38. Unwanted Tripping