UL 294
Standard for Access Control System Units

DETAILS
Edition Number:5SCC Approved:--
Edition Date:1999-01-29DOD Approved: --
Price Code:BANSI Approved: 2010-09-17
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements apply to the construction, performance, and operation of systems intended to regulate or control:

    a)    Entry into a protected area or a restricted area or

    b)    Access to or the use of a device(s) by electrical, electronic or mechanical means.


    1.1 revised August 14, 2009

    1.2 These requirements apply to computer equipment that, when used in conjunction with the main control, is necessary for proper operation of the access control system. This Standard does not apply to supplementary computer equipment that is not necessary for operation of the access control system if single opens, earth ground faults or wire-to-wire shorts on the circuit connection from the computer to the access control system does not inhibit intended operation.

    1.3 Deleted October 29, 2001

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
    • UL Foreword
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Components
            • 2.2 Units of measurement
            • 2.3 Undated references
            • 2.4 Terminology
          • 3 Glossary
          • 4 Installation and Operating Instructions
          • 4A Installation and Operating Instructions Physical Media
        • CONSTRUCTION
          • ASSEMBLY
          • 5 General
            • 5.1 Product assembly
            • 5.2 Electrical protection
          • 6 Protection of Service Personnel
          • 7 Enclosure
            • 7.1 General
            • 7.2 Doors and covers
            • 7.3 Enclosure openings
            • 7.4 Alarm enclosure
            • 7.5 Screens and expanded metal
            • 7.6 Cast metal
            • 7.7 Sheet metal
            • 7.8 Product enclosure mounting
            • 7.9 Polymeric materials
          • 8 Electric Shock
          • 9 Corrosion Protection
          • FIELD WIRING CONNECTIONS
          • 10 General
          • 11 Cord Connected Products
          • 12 Permanently Connected Products
            • 12.1 General
            • 12.2 Field-wiring terminals
            • 12.3 Qualified application
            • 12.4 Field wiring leads
            • 12.5 Polarity identification
          • 13 Grounding
          • INTERNAL WIRING
          • 14 General
          • 15 Wiring Methods
          • 16 Separation of Circuits
          • 17 Bonding for Grounding
          • COMPONENTS, ELECTRICAL
          • 18 Mounting of Components
          • 19 Insulating Materials
          • 20 Fuseholders and Current-Carrying Parts
          • 21 Overcurrent Protection
          • 22 Semiconductors
          • 23 Switches
          • 24 Transformers and Coils
          • SPACINGS
          • 25 General
          • 26 Components
          • 27 Computer Accessory Equipment
        • PERFORMANCE – ALL UNITS
          • 28 General
            • 28.1 Test units and data
            • 28.2 Test samples and miscellaneous data
            • 28.3 Test voltages
            • 28.4 FCC requirements
          • 29 Normal Operation Test
          • 30 Input Measurement Test
          • 31 Output Measurement Test
          • 32 Electrical Supervision Test
            • 32.1 General
            • 32.2 Power interruption
          • 33 Standby Power
          • 34 Undervoltage Operation Test
          • 35 Overvoltage Operation Test
          • 36 Variable Ambient Test
          • 37 Humidity Test
          • 38 Leakage Current Tests for Cord-Connected Products
          • 39 Electric Shock Current Test
          • 40 Overload Test
            • 40.1 General
            • 40.2 Separately energized circuits
          • 41 Endurance Test
            • 41.1 General
            • 41.2 Separately energized circuits
          • 42 Jarring Test
          • 43 Dielectric Voltage-Withstand Test
          • 44 Temperature Test
          • 45 Abnormal Operation Test
          • 46 Electrical Transient Tests
            • 46.1 General
            • 46.2 Supply line transients
            • 46.3 Internally induced transients
            • 46.4 Output circuit transients
          • 47 AC Induction Test
          • 48 Polymeric Materials Test
          • 49 Battery Replacement Test
          • 50 Drop Test
          • 51 Strain Relief Test
            • 51.1 General
            • 51.2 Field-wiring leads
          • 52 Tests for Ignition Through Bottom-Panel Openings
            • 52.1 General
            • 52.2 Hot, flaming oil
            • 52.3 Molten PVC and copper
          • 53 Mechanical Strength Tests for Enclosures
            • 53.1 Constant-force test
            • 53.2 Impact test
          • 54 Special Terminal Assemblies Tests
            • 54.1 General
            • 54.2 Disconnection and reconnection
            • 54.3 Mechanical secureness
            • 54.4 Flexing test
            • 54.5 Millivolt drop test
            • 54.6 Temperature test
          • 55 Attack Tests
            • 55.1 Destructive attack, access control systems
            • 55.2 Nondestructive attack
          • 56 Tests for Alarm Sounding Devices
          • 57 Alarm Housing Test
        • MANUFACTURING AND PRODUCTION LINE TESTS
          • 58 Production Line Dielectric Voltage-Withstand Test for High-Voltage Products
          • 59 Production Line Grounding Continuity Test
        • MARKINGS
          • 60 Details
          • 61 Marking Permanency Tests
        • OUTDOOR USE EQUIPMENT
          • ASSEMBLY
          • 62 General
          • 63 Construction
            • 63.1 General
            • 63.2 Corrosion protection
          • 64 Field-Wiring Connections
          • 65 Internal Wiring
          • 66 Components, Electrical Insulating Material
          • PERFORMANCE
          • 67 Rain Test
          • 68 Dust Test
          • 69 Variable Ambient Test
          • 70 Metallic Coating Thickness Test
          • 71 Corrosion Tests
            • 71.1 General
            • 71.2 Salt spray (fog)
            • 71.3 Moist hydrogen sulfide (H) – air mixture
            • 71.4 Moist carbon dioxide (CO) – sulfur dioxide (SO) – air mixture
          • 72 Ultraviolet Light and Water Exposure Test
          • 73 Accelerated Aging Tests for Gaskets, Sealing Compounds, and Adhesives
          • MARKINGS
          • 74 Details
        • ACCESSORY EQUIPMENT
          • 75 General
          • 76 Construction
          • 77 Performance (Installation) Test
          • 78 Markings
    • APPENDIX A