UL 469
Standard for Musical Instruments and Accessories

DETAILS
Edition Number:4SCC Approved:--
Edition Date:2006-11-03DOD Approved: --
Price Code:BANSI Approved: --
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover power-operated musical instruments and accessories rated 300 volts or less, intended for household and commercial use on supply circuits in accordance with the National Electrical Code, NFPA 70.

    1.2 Musical instruments include organs, electronic pianos, music synthesizers, and other such products that produce music under the direct control of the player.

    1.3 These requirements also cover accessories for use with musical instruments, such as rhythm generators and similar equipment having self-contained tone generators, tone cabinets, music tuners, and the like.

    1.4 These requirements do not cover commercial audio equipment, such as amplifiers, mixers, and signal processors for general use; or special effects units, amplifier-speakers, and the like, that are intended for use by professional and semiprofessional musicians.

    1.5 These requirements do not cover musical instruments that are categorized as electrically operated toys and are covered by the Standard for Electric Toys, UL 696.

    1.6 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to maintain the acceptable level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific provisions of this standard cannot be judged to comply with this standard. Where considered appropriate, revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Components
            • 2.2 Units of measurement
            • 2.3 Undated references
          • 3 Glossary
        • CONSTRUCTION
          • 4 General
          • 5 Enclosure
          • 6 Mechanical Assembly
          • 7 Materials
            • 7.1 General
            • 7.2 Guard and barrier insulating material for rendering live parts inaccessible
          • 8 Protection Against Corrosion
          • 9 Current-Carrying Parts
          • 10 Accessibility of Live Parts
            • 10.1 General
            • 10.2 Adjustment opening
            • 10.3 Screens, barriers, and other openings
            • 10.4 Control shaft
            • 10.5 Captive part
          • 11 Exposure to Rain or Moisture
          • 12 Supply Connections
            • 12.1 General
            • 12.2 Power-supply cord
            • 12.3 Cord-connector body
            • 12.4 Cord strain relief
            • 12.5 Cord push-back relief
            • 12.6 Bushings
            • 12.7 Cord routing
            • 12.8 Attachment plug
          • 13 Grounding
            • 13.1 General
            • 13.2 Grounding-type cord-connector body
            • 13.3 Grounding adapters
            • 13.4 Grounded-product receptacle
          • 14 Supply-Circuit-Voltage Selector
          • 15 Capacitors
          • 16 Lampholders
          • 17 Receptacles
          • 18 Overload Protection
            • 18.1 General
            • 18.2 Fuses
          • 19 Internal Wiring
            • 19.1 Types of wire
            • 19.2 Sleeving, tape, tubing, and wire insulation
            • 19.3 Mechanical protection
            • 19.4 Splices and connections
            • 19.5 Wire-wrapped connections
            • 19.6 Aluminum terminations
            • 19.7 Quick-connect terminals
          • 20 Remote-Control and Interconnecting Cables
          • 21 Integrated Circuits
          • 22 Motors, Coil Windings, and Transformers
          • 23 Field-Installed Accessories
          • 24 Switches and Interlocks
            • 24.1 Switches
            • 24.2 Interlocks
          • 25 Spacings
            • 25.1 General
            • 25.2 Barriers and liners
          • 26 Risk of Fire
          • 27 Low-Energy Circuits
            • 27.1 Low-voltage, limited-energy circuits
            • 27.2 Nonhazardous secondary circuits
        • PROTECTION AGAINST INJURY TO PERSONS
          • 28 Scope
          • 29 General
          • 30 Power-Operated Moving Parts
          • 31 Enclosures and Guards
          • 32 Sharp Edges
        • PERFORMANCE
          • 33 General
            • 33.1 Voltmeters
            • 33.2 Cheesecloth indicators
            • 33.3 Supply circuit
          • 34 Normal-Operation Tests
          • 35 Connector- and Component-Displacement and -Substitution Tests
            • 35.1 General
            • 35.2 Vacuum-tube substitution
          • 36 Leakage-Current and Shock-Current Tests
            • 36.1 Leakage-current test
            • 36.2 Shock-current test
          • 37 Resistance of Grounding Circuit Test
          • 38 Power-Input Test
          • 39 Temperature Test
          • 40 Audio-Output Test
          • 41 Dielectric Voltage-Withstand Tests
            • 41.1 General
            • 41.2 Primary circuit
            • 41.3 Isolating power transformer
            • 41.4 Primary insulation
            • 41.5 Output circuit
            • 41.6 Power-transformer secondary
            • 41.7 Direct-connected power supply
            • 41.8 Printed-wiring assembly
            • 41.9 Maximum voltage test
          • 42 Leakage Current After Humidity Conditioning Test
          • 43 Capacitor Test
          • 44 Low-Energy Circuit Tests for Low-Voltage, Limited-Energy Circuits
            • 44.1 General
            • 44.2 Current capacity
            • 44.3 Volt-ampere capacity
            • 44.4 Continuous operation
            • 44.5 Abnormal-operation
          • 45 Low-Energy Circuit Tests for Nonhazardous Secondary Circuits
            • 45.1 Power and voltage determination
            • 45.2 Abnormal operation
            • 45.3 Continuous operation
          • 46 Abnormal-Operation Tests
            • 46.1 General
            • 46.2 Component abnormal-operation test
            • 46.3 Audio-output-fault conditions
            • 46.4 Endurance
            • 46.5 Abnormal temperature test
          • 47 Switching-Device Test
          • 48 Solid-State Switch Test
            • 48.1 Abnormal operation
            • 48.2 Voltage-surge test
          • 49 Protective-Circuit Test
          • 50 Remote-Control and Interconnection Cable Test
            • 50.1 Cable-short-circuit test
            • 50.2 Cable-arcing test
          • 51 Strain-Relief Test
          • 52 Separable-Connector Test
          • 53 Flexing Test
          • 54 Solderless Wire-Wrap Connections Tests
            • 54.1 General – contact points
            • 54.2 Unwrapping test
            • 54.3 Strip-force test
          • 55 Strength of Enclosure Tests
            • 55.1 General
            • 55.2 Enclosure-loading test
            • 55.3 Pressure test
            • 55.4 Impact test
            • 55.5 Back-cover-bending test
            • 55.6 Drop test
            • 55.7 Handle-strength test
            • 55.8 Enclosure temperature-stability test
          • 56 Stability Tests
          • 57 Exposure to Rain Test
          • 58 Grille-Cloth Test
          • 59 Field-Installed Accessory Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 60 Dielectric Voltage-Withstand Test
          • 61 Grounding-Continuity Test
        • RATING
          • 62 General
        • MARKING
          • 63 Permanence
          • 64 Details
            • 64.1 Marking type and size
            • 64.2 Identifying and rating information
            • 64.3 Accessory identification
            • 64.4 User-serviceable components
            • 64.5 Factory identification
            • 64.6 Interlock warning
            • 64.7 Receptacles
            • 64.8 Protective-device replacement
            • 64.9 Lamp replacement
            • 64.10 Input-voltage selector
            • 64.11 Multiple-input voltage
            • 64.12 Exposure warning
            • 64.13 Grounding adapter
          • 65 Graphic Symbols and Supplemental Marking
            • 65.1 No-user-serviceable parts compartment warning
            • 65.2 Location
            • 65.3 Graphic-symbol size and color
            • 65.4 Supplemental marking size and color
            • 65.5 Size of outlines and symbols
        • INSTRUCTIONS
          • 66 General
          • 67 Instructions Pertaining to a Risk of Fire, Electric Shock, or Injury to Persons
          • 68 Installation and Operating Instructions
          • 69 User-Maintenance Instructions
    • APPENDIX A