UL 916
Standard for Energy Management Equipment

DETAILS
Edition Number:5SCC Approved:--
Edition Date:2015-10-22DOD Approved: --
Price Code:CANSI Approved: --
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover energy management equipment and associated sensing devices rated 600 volts or less and intended for installation in accordance with the National Electrical Code, NFPA 70.

    1.2 This equipment energizes or de-energizes electrical loads to achieve a desired use of electrical power. The equipment is intended to control electrical loads by responding to sensors or transducers monitoring power consumption, by sequencing, by cycling the loads through the use of preprogrammed data logic circuits, or any combination thereof. Devices responding to signals from a utility company may receive the signals over the power lines or as radio signals.

    1.3 These requirements also cover equipment intended for connection only to a low-voltage circuit of limited power supplied by a Class 2 transformer.

    1.4 These requirements do not cover switching devices operated by a mechanical or electromechanical clock mechanism to energize or de-energize loads. These requirements do cover electronic clock operated energy management equipment.

    1.5 Controls intended to be installed in air handling spaces or in other environmental air space (plenums) are covered under the scope of this standard.

  • 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 Frame and Enclosure
            • 7.1 General
            • 7.2 Covers
            • 7.3 Transformers
            • 7.4 Cast metal
            • 7.5 Sheet metal
            • 7.6 Nonmetallic
            • 7.7 Windows
            • 7.8 Raintight and rainproof enclosures
          • 8 Openings in Enclosures
            • 8.1 Ventilating openings
            • 8.2 Other openings
            • 8.3 Screens and expanded metal
            • 8.4 Wire openings
          • 9 Mounting
          • 10 Mechanical Assembly
          • 11 Operating Mechanism
          • 12 Accessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts
          • 13 Protection Against Corrosion
          • 14 Insulating Materials
          • 15 Field Connections
            • 15.1 General
            • 15.2 Equipment permanently connected electrically
            • 15.3 Terminals
            • 15.4 Outlet-box-mounted devices
            • 15.5 Portable equipment
            • 15.6 Stationary equipment
            • 15.7 Polarity
            • 15.8 Strain relief
            • 15.9 Bushings
          • 16 Current-Carrying Parts
          • 17 Switches
          • 18 Internal Wiring
            • 18.1 General
            • 18.2 Interconnecting cords and cables
            • 18.3 Interconnection of units
          • 19 Grounding
            • 19.1 General
            • 19.2 Grounding means
            • 19.3 Terminals and leads
          • 20 Bonding of Internal Parts
            • 20.1 General
            • 20.2 Construction and connection
          • 21 Motors
          • 22 Printed Wiring Boards
          • 23 Transformers
          • 24 Capacitors
            • 24.1 General
            • 24.2 Signal coupling capacitors
          • 25 Fuseholders
          • 26 Overcurrent Protection, Control-Circuit Conductors
          • 27 Overload Relays, Thermal Protectors for Motors, and Impedance-Protected Motors
          • 28 Coil Windings
          • 29 Spacings
            • 29.1 General
            • 29.2 Line-voltage circuits
            • 29.3 Magnet-coil windings
            • 29.4 Low-voltage class 2 circuits
            • 29.5 Isolated limited secondary circuits (100-volt-amperes or less)
            • 29.6 Controlled environment circuits
          • 30 Clearances and Creepage Distances
          • 31 Controlled-Environment Secondary Circuits
          • 32 Wiring Space
          • 33 Separation of Circuits
          • 34 Isolation Devices
          • 35 Connections to Separate Equipment
            • 35.1 General
            • 35.2 Fuel-control circuit
            • 35.3 Circulator or auxiliary-control circuit
          • 36 Interconnection of Class 2 Circuits
          • 37 Barriers
        • PROTECTION AGAINST INJURY TO PERSONS
          • 38 General
            • 38.1 Scope
            • 38.2 Sharp corners and edges
            • 38.3 Moving parts
            • 38.4 Enclosures and guards
            • 38.5 Surface temperatures
            • 38.6 Mounting devices
            • 38.7 Strength of parts
          • 39 Protection of Users and Service Personnel
            • 39.1 General
            • 39.2 Mechanical servicing
            • 39.3 Electrical servicing
        • PERFORMANCE
          • 40 General
          • 41 Power Input Test
          • 42 Temperature Test
          • 43 Overvoltage and Undervoltage Tests
          • 44 Leakage Current Test
          • 45 Leakage Current Test Following Humidity Conditioning
          • 46 Normal Operation Test
          • 47 Abnormal Operation Test
            • 47.1 General
            • 47.2 Rectifier – capacitor combinations
            • 47.3 Feedback sensing devices
            • 47.4 Isolation devices
            • 47.5 Abnormal switching test
          • 48 Component Breakdown Test
            • 48.1 Effects on equipment
            • 48.2 Effects on controlled load
          • 49 Overload Test
            • 49.1 General
            • 49.2 Tungsten-filament-lamp load characteristics
          • 50 Endurance Test
          • 51 Electronic Ballast, CFLs and LED Driver Rated Controls
          • 52 Dielectric Voltage-Withstand Test
            • 52.1 General
            • 52.2 Secondary circuits (controlled environment)
            • 52.3 Power transformers
            • 52.4 Induced potential (crossover lead)
            • 52.5 Induced potential repeated
            • 52.6 Dead-case-mounted semiconductors
          • 53 Volt-Ampere Capacity
          • 54 Burnout Test
          • 55 Limited Short-Circuit Test
            • 55.1 General
            • 55.2 Test circuit
          • 56 Conductor Short-Circuit Test
          • 57 Strain Relief and Flexing Test
            • 57.1 Strain relief
            • 57.2 Flexing
          • 58 Accelerated Aging Tests
            • 58.1 General
            • 58.2 Gaskets
            • 58.3 Sealing compound
            • 58.4 Adhesives
          • 59 Metallic Coating Thickness Test
          • 60 Rain Test
          • 61 Conduit Entries Strength Test
            • 61.1 Polymeric enclosures
            • 61.2 Metallic enclosures
          • 62 Cover Retention Test
          • 63 Bonding Conductor Tests
            • 63.1 Overload withstand test
            • 63.2 Resistance test
          • 64 Glass Window Impact Test
          • 65 Permanence of Marking
          • 66 Component Evaluation
          • 67 Isolating Resistor Evaluation
        • MANUFACTURING AND PRODUCTION TESTS
          • 68 Electronic Controls Requiring a Critical Component Evaluation
          • 69 Production-Line Dielectric Voltage-Withstand Test
            • 69.1 General
            • 69.2 Dead-case-mounted semiconductors
          • 70 Production-Line Grounding-Continuity Test
        • RATINGS
          • 71 Details
        • MARKINGS
          • 72 General
          • 73 Wiring
          • 74 Elevated Air Temperature
          • 75 Cautionary Markings
          • 76 Instructions
        • ACCESSORY EQUIPMENT
          • 77 General
          • 78 Construction
          • 79 Performance
          • 80 Markings
        • POLYMERIC MATERIALS
          • 81 General
          • 82 Flammability of Enclosure – 5-Inch Flame
          • 83 Thermal Aging
          • 84 Exposure to Ultraviolet Light Test
          • 85 Water Exposure and Immersion Test
          • 86 Volume Resistivity Test
          • 87 Resistance to Hot-Wire Ignition Test
          • 88 Heat-Deflection Temperature Test
          • 89 Resistance to Impact Test
          • 90 Resistance to Crushing Test
          • 91 Mold-Stress Evaluation
          • 92 Dielectric Strength Test
          • 93 Knockout Test
          • 94 Abnormal Operation Test
          • 95 Resistance to Ignition Test
          • 96 Creep and Overcurrent Test
    • SAFETY OF SMART ENABLED ENERGY MANAGEMENT EQUIPMENT
    • APPENDIX A