UL 1699B
Standard for Photovoltaic (PV) DC Arc-Fault Circuit Protection

DETAILS
Edition Number:1SCC Approved:--
Edition Date:2018-08-22DOD Approved: --
Price Code:AANSI Approved: 2018-08-10
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover DC photovoltaic arc-fault circuit protection devices intended for use in solar photovoltaic electrical energy systems as described in Article 690 of the National Electrical Code, NFPA 70. This protection is intended to mitigate the effects of arcing faults that may pose a risk of fire ignition under certain conditions if the arcing persists.

    1.2 These requirements cover devices including photovoltaic (PV) dc arc-fault circuit-interrupters (AFCI), arc-fault detectors (AFD), interrupting devices (ID) and inverters, converters, and charge controllers with integral arc-fault circuit-interrupter protection.

    1.3 These requirements cover devices rated 1500 volts or less. They are intended for use in dc electrical systems that are supplied by a photovoltaic source, such as a module with solar cells designed to generate dc power when exposed to sunlight.

    1.4 These devices are not intended to detect glowing connections.

    1.5 In Part 1 of these requirements the term "device" is used generically to apply to all of the devices covered by these requirements and is modified when the requirement does not apply to all types. In Part 2 and Part 3 of these requirements the term "device" is used generically to apply to all devices covered by the particular part of this Standard, and is modified when the requirement does not apply to all types.

    1.6 A device that is also intended to perform other functions, such as overcurrent protection, disconnects, combiner boxes, inverters, or other PV system functions or any combination thereof, shall additionally comply with the requirements of the applicable Standard or Standards that cover devices that provide those functions as intended for use in PV systems.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • PART 1 – ALL DEVICES
          • INTRODUCTION
          • 1 Scope
          • 2 Glossary
          • 3 Components
          • 4 Units of Measurement
          • 5 Undated References
          • CONSTRUCTION
          • 6 General
          • 7 Corrosion Protection
          • 8 Current Carrying Parts
          • 9 Internal Wiring
          • 10 Insulation
          • 11 Power Supply
          • 12 Operating Mechanism
          • 13 Programmable Circuit Components
          • 14 Electronic Interruption
            • 14.1 General
            • 14.2 "Off" state or stand-by mode current
            • 14.3 Reliability
            • 14.4 Programmable circuit components
          • MANUFACTURING AND PRODUCTION LINE TESTS
          • 15 General
        • PART 2 – PV AFCI, PV AFD, AND PV ID DEVICES
          • CONSTRUCTION
          • 16 General
          • 17 Accessibility of Energized Parts
          • 18 Spacings
          • 19 Terminals
            • 19.1 General
            • 19.2 Terminal leads
            • 19.3 Wire binding screw terminals
            • 19.4 Pressure wire terminals
          • 20 Enclosure
          • 21 Grounding
          • 22 Annunciator
          • 23 Test Circuits
          • PERFORMANCE
          • 24 General
          • 25 Humidity Conditioning
          • 26 Leakage Current Measurement
          • 27 Voltage Surge Test
            • 27.1 General
            • 27.2 Unwanted tripping test (Ring wave)
            • 27.3 Surge immunity test (Combination wave)
          • 28 Environmental Test Sequence
          • 29 Arc Fault Detection Tests
            • 29.1 General
            • 29.2 One string, one MPPT
            • 29.3 Two strings combined, one MPPT
            • 29.4 Combiner box
            • 29.5 External AFCI
            • 29.6 DC-DC converter systems
            • 29.7 Microinverters
          • 30 Unwanted Tripping Tests
            • 30.1 General
            • 30.2 Loading condition I – Inverters, converters, and charge controllers
            • 30.3 Loading condition II – DC switch operation
            • 30.4 Loading condition III – Irradiance step changes
          • 31 Normal Temperature Test
          • 32 Overvoltage Test
          • 33 Overload Test
          • 34 Endurance Test
          • 35 Dielectric Voltage-Withstand Test
          • 36 Abnormal Operations Test
          • 37 Short Circuit Current Test
          • 38 Corrosion Test
          • 39 Surge Current Test
            • 39.1 General
            • 39.2 Mounting and installation
            • 39.3 Surge parameters
            • 39.4 Surge polarity
          • 40 Abnormal Overvoltage Tests
            • 40.1 General
            • 40.2 Full phase voltage – high current abnormal overvoltage test
            • 40.3 Limited current abnormal overvoltage test
          • 41 Supplemental Voltage Surge Immunity Test
            • 41.1 General
            • 41.2 Surge immunity test (combination wave)
          • 42 Resistance to Environmental Noise Test
            • 42.1 General
            • 42.2 Electrostatic discharge immunity
            • 42.3 Radiated electromagnetic field immunity
            • 42.4 Electrical fast transient immunity
            • 42.5 Voltage surge immunity
            • 42.6 Immunity to conducted disturbances, induced by RF fields
            • 42.7 Voltage dips, short interruptions and voltage variations immunity
          • 43 Strain-Relief Tests
            • 43.1 Terminal lead strain-relief test
            • 43.2 Power-supply cord strain-relief test
          • 44 Mechanical Tests
          • 45 Dust Test
          • RATINGS
          • 46 General
          • MARKINGS
          • 47 General
          • INSTRUCTIONS
          • 48 Operating and Installation Instructions
        • PART 3 – INVERTERS, CONVERTERS, AND CHARGE CONTROLLERS WITH INTEGRAL PHOTOVOLTAIC DC ARC-FAULT CIRCUIT INTERRUPTER PROTECTION
          • GENERAL
          • 49 General
          • CONSTRUCTION
          • 50 General
          • 51 Alternate Spacings – Clearances and Creepage Distances
          • 52 Annunciator
          • 53 Test Circuits
          • PERFORMANCE
          • 54 General
          • 55 Voltage Surge Test
          • 56 Overvoltage, Overload, Endurance, Abnormal Operations, and Short Circuit Tests
          • MARKINGS
          • 57 General
          • INSTRUCTIONS
          • 58 Operating and Installation Instructions
    • APPENDIX A
    • APPENDIX B Manufacturing and Production Line Tests