UL 346 : 5

FOREWORD
INTRODUCTION
1. Scope
2. General
3. Glossary
CONSTRUCTION
4. General
5. Enclosure
6. Electric Shock
7. Drain Holes
8. Protection Against Corrosion
9. Field Wiring Connections
10. Grounding and Bonding for Grounding
11. Internal Wiring
12. Components
13. Spacings
14. Servicing and Maintenance
PERFORMANCE
15. General
16. Normal Operation Test
17. Calibration Test - Retard Feature
18. Endurance Test - Retard Feature
19. Overload and Endurance Test
20. Temperature Test
21. Electrical Transient Tests
22. Dielectric Voltage-Withstand Test
23. Electric Shock Current Test
24. Corrosion Test
25. Abnormal Tests
26. Burnout Test
27. Tests of Polymeric Materials
28. Flexing Test (Vane Assembly)
29. Impact Test
30. Tests of Elastomeric Materials
31. Immersion Test (Indicator Assembly)
32. Sensitivity Test
33. Hydraulic Friction Loss Test
34. Surge Test
35. Hydrostatic Strength Test
MANUFACTURING AND PRODUCTION TESTS
36. Introduction
37. Production-Line Dielectric Voltage-Withstand Test
MARKING
38. General
39. Instructions and Installation Drawings

This revision to ANSI/UL 346 dated September 20, 2019 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS).

1.1 These requirements cover vane type waterflow indicators intended for use in fire protective signaling systems to be employed in ordinary indoor locations, in accordance with the National Fire Alarm Code, NFPA 72.