UL 2748A
Standard for Arcing Fault Interrupting Devices

DETAILS
Edition Number:1SCC Approved:--
Edition Date:2017-08-29DOD Approved: --
Price Code:AANSI Approved: 2017-08-29
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover fast operating devices intended to interrupt currents associated with arcing faults, having interrupting times faster than conventional overcurrent devices.

    1.2 These requirements cover open type devices that are intended to be installed within power distribution equipment.

    1.3 These requirements cover devices rated up to 52 kV ac maximum.

    1.4 This standard does not include the requirements for sensors intended to detect arcing faults, devices intended to trigger the functioning of the arc interrupting device, or devices intended to quench arcing faults by transferring the arcing fault to a lower impedance path.

    1.5 This standard does not include requirements for integration and testing of arcing fault interrupting devices within equipment it is intended to protect.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Components
          • 3 Units of Measurement
          • 4 Undated References
          • 5 Glossary
        • CONSTRUCTION
          • 6 General
          • 7 Creepage and Clearance Distance
          • 8 Wiring
          • 9 Operation
        • PERFORMANCE
          • 10 General
          • 11 Continuous Current Test
          • 12 Power-Frequency Withstand Voltage Tests
          • 13 Internal Arcing Fault Test
          • 14 Arcing Fault Interruption Test
        • RATINGS
          • 15 General
        • MARKING
          • 16 General
        • INSTRUCTIONS
          • 17 General