UL 879A
Standard for LED Sign and Sign Retrofit Kits

DETAILS
Edition Number:1SCC Approved:--
Edition Date:2012-12-12DOD Approved: --
Price Code:AANSI Approved: 2016-08-16
Type:ulstd

  • SCOPE

    1 Scope

    1.1 General

    1.1.1 This standard covers LED (light emitting diode) kits intended for field installation to retrofit signs already installed in the field and LED kits intended for installation in new signs.

    1.2 Retrofit kits

    1.2.1 These LED kits are intended to replace the electrical components related to the type of illumination used in a sign, such as neon, fluorescent, and HID. Neon sign components include neon tubes, tube supports, neon power supplies, and all secondary wiring from the neon supply. Fluorescent sign components include fluorescent tubes, ballast, and ballast secondary wiring, and in some cases lampholders.

    1.2.2 Retrofit kits include the power supply or transformer, power supply or transformer enclosure, the LEDs and the LED mounting means, and installation instructions.

    1.3 New sign construction

    1.3.1 Component power units may be incomplete with respect to electrical enclosure, mounting, supply connections, etc.

    1.3.2 LEDs, secondary wiring, and LED transformers or supplies may be provided separately.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
            • 1.1 General
            • 1.2 Retrofit kits
            • 1.3 New sign construction
          • 2 Components
          • 3 Units of Measurement
          • 4 Undated References
          • 5 Glossary
        • CONSTRUCTION
          • 6 Power Supplies and Transformers
            • 6.1 General
            • 6.2 Power supplies
            • 6.3 Transformers
          • 7 Enclosure of Live Parts
            • 7.1 General
            • 7.2 Metal enclosures
            • 7.3 Polymeric enclosures
            • 7.4 Openings
          • 8 Supply Connections
          • 9 Separation of Circuits
          • 10 Over-Current Protective Devices
          • 11 Fuses
          • 12 Circuit Breaker or Supplementary Protector
          • 13 Thermal Protective Devices
          • 14 Thermistors
          • 15 LED Units or Modules
            • 15.1 General
            • 15.2 Conditions of use
          • 16 Secondary Wiring
            • 16.1 Class 1 wiring
            • 16.2 Class 2 wiring
            • 16.3 Class 3 wiring
        • PERFORMANCE
          • 17 General
          • 18 Input Test
          • 19 Normal Temperature Test
          • 20 Dielectric Voltage Withstand Test
          • 21 Abnormal Operation Test
          • 22 Installation and Assembly Test
        • MARKINGS
          • 23 Marking Method
          • 24 Required Markings
        • INSTALLATION INSTRUCTIONS
          • 25 LED Kits for Factory Installation in New Signs
          • 26 LED Kits for Field Installation in Existing Signs
    • SUPPLEMENTAL REQUIREMENTS FOR TUBULAR LIGHT-EMITTING DIODE LAMPS
    • APPENDIX A