Subject 508C (61800-5-1, 61800-5-2)

Bulletin Dated: April 19, 2016

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for Power Conversion Equipment:

1. Update on current projects for the Standard for Power Conversion Equipment, UL 508C

2. Update on current projects for the Standard for Adjustable Speed Electrical Power Drive Systems - Part 5-1: Safety Requirements - Electrical, Thermal and Energy, UL 61800-5-1

3. Update on the Standard for Adjustable Speed Electrical Power Drive Systems - Part 5-2: Safety Requirements - Functional, UL 61800-5-2

4. Update from the Servo Drive Amplifier Task Group

5. Update from the IGBT Task Group

6. Update from the Multiple Motors Task Group

7. Update from the Drives with Power and Control Cable Assemblies Task Group

8. Update from the Spacings Task Group

9. Update from the DC Bus Connection Task Group

10. Update from the Drive Output Conductor Protection Task Group

11. Discussion on Across the Line and Line to Earth (X and Y) Capacitor Requirements

12. Discussion on High Fault Breakdown of Components Test Samples and Branch Circuit Protection

13. Discussion on Clause 6.3.1DV.1 Marking Requirement

14. Discussion on capacitors

15. Presentation covering the transition from UL 508C to UL 61800-5-1

16. Review of Amendment for IEC 61800-5-1

17. National Electrical Code proposals