UL 122
Standard for Photographic Equipment

DETAILS
Edition Number:5SCC Approved:--
Edition Date:2007-10-29DOD Approved: --
Price Code:BANSI Approved: 2015-07-27
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover electrically-operated, cord-connected photographic equipment rated 300 V or less, and permanently connected photographic equipment rated 600 volts or less, intended for household or commercial use on interior wiring systems in accordance with the National Electrical Code, NFPA 70. These requirements also cover battery-powered photographic equipment involving a risk of fire or electric shock.

    1.2 These requirements cover motion picture projectors, including those intended for use in motion picture theaters; still picture projectors; equipment intended for use in taking photographs; accessories intended for use with or installation upon picture projectors or intended to be employed in viewing, editing or handling films, slides, pictures, drawings, or similar stationary graphic material; cameras; chemical replenishers; contact printers; enlargers; exposure meters; film copiers, film cutters, film dryers; film editors; household film viewers; film and paper processors; film rewinders, film strip projectors; film strip projector-phonograph combinations; film strip projector-tape player combinations; motor-operated projector screens; silent and sound motion picture projectors; print dryers; print processors; printing easels; opaque projectors; overhead projectors; photoflash equipment; photographic timers; photometers, flash cameras; slide projectors; silver recovery units; slide projector-phonograph combinations; slide projector-tape player combinations; slide sorters; slide viewers; stripping and line-up tables; video printers; and similar equipment.

    1.3 These requirements do not cover commercial film viewers and dark room safelights, which are evaluated under the requirements for fixtures and portable lamps; projector tables, which are evaluated under the requirements for utility tables; microfilm and micrographic equipment, which are evaluated under the requirements for office appliances and business equipment; or portable photographic lamps and floodlights, which are evaluated under the requirements for stage and studio lighting fixtures.

    1.4 Electric photographic equipment intended for use in a hazardous location as defined in the National Electrical Code is evaluated on the basis of its compliance with the requirements in this standard, and other appropriate examination and tests to determine whether it is acceptable for the purpose.

    1.5 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 or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. 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 Terminology
          • 4 Glossary
        • CONSTRUCTION
          • 5 Moisture Condensation
          • 6 Frame and Enclosure
            • 6.1 General
            • 6.2 Remotely- and automatically-controlled appliances
            • 6.3 Enclosure material
          • 7 Accessibility of Live Parts
            • 7.1 Openings
            • 7.2 Pin terminals
          • 8 Mechanical Assembly
          • 9 Protection Against Corrosion
          • 10 Power Supply Connections
            • 10.1 Cord-connected appliances
            • 10.2 Permanently-connected appliances
          • 11 Current-Carrying Parts
          • 12 Internal Wiring
            • 12.1 Mechanical protection
            • 12.2 Types of wire
            • 12.3 Splices and connections
          • 13 Grounding and Bonding
            • 13.1 Grounding
            • 13.2 Bonding
          • 14 Interconnecting Cords and Cables
          • 15 Receptacles and Connectors
          • 16 Separation of Circuits
          • 17 Insulating Material
            • 17.1 Electrical insulation
            • 17.2 Thermal insulation
          • 18 Overcurrent Protection
            • 18.1 General
            • 18.2 Motors
            • 18.3 Lampholders and receptacles
            • 18.4 Primary circuits
            • 18.5 Secondary circuits
          • 19 Short-Circuit and Ground-Fault Protection
          • 20 Motors
          • 21 Switching Devices
            • 21.1 General
            • 21.2 Rating
          • 22 Lampholders
          • 23 Medium- and High-Pressure Lamps
          • 24 Capacitors
            • 24.1 Motor and power-factor capacitors
            • 24.2 Isolating capacitors
            • 24.3 Interference elimination capacitors
            • 24.4 Capacitor discharge
            • 24.5 Capacitor rating
          • 25 Transformers
          • 26 Heating Elements
          • 27 Printed-Wiring Boards
          • 28 Lasers
          • 29 Modems and Modem Cards
          • 30 Spacings
            • 30.1 General
            • 30.2 Field-wiring terminal spacings
            • 30.3 Primary circuit spacings
            • 30.4 Limited-primary circuit spacings
            • 30.5 Multiple spacings
            • 30.6 Barriers for spacings
            • 30.7 Secondary and battery circuit spacings
          • 31 Secondary and Battery Circuits
          • 32 Low-Voltage, Limited-Energy Circuits
          • 33 Safety Circuits
          • 34 Liquid Containers, Seals, and Diaphragms
        • PROTECTION AGAINST INJURY TO PERSONS
          • 35 General
          • 36 Sharp Edges
          • 37 Enclosure of Moving Parts
          • 38 Stability
          • 39 Strength of Handles
          • 40 Glass Parts
          • 41 Interlocks
          • 42 Surface Temperatures
          • 43 Cord Flexing
          • 44 Marking
        • PERFORMANCE
          • 45 General
          • 46 Resistance of Grounding Circuit
          • 47 Leakage Current and Shock Current Tests
            • 47.1 General
            • 47.2 Leakage current
            • 47.3 Shock current
            • 47.4 Transient electric shock
            • 47.5 Stored energy electric shock
            • 47.6 Tube interchange and substitution
            • 47.7 Standardized pin/socket arrangements
          • 48 Leakage Current Following Humidity Conditioning Test
          • 49 Operational Tests
          • 50 Starting Current Test
          • 51 Input Test
            • 51.1 General
            • 51.2 Maximum normal load
          • 52 Temperature Test
            • 52.1 General
            • 52.2 Ambient temperatures
            • 52.3 Temperature measurements
            • 52.4 Operation for temperature test
          • 53 Potential Measurements
          • 54 Electrolytic Capacitor Test
          • 55 Dielectric Voltage-Withstand Test
            • 55.1 Primary circuits
            • 55.2 Limited primary circuits
            • 55.3 Secondary and battery circuits
            • 55.4 Interconnecting cables
            • 55.5 Maximum voltage
          • 56 Abnormal Operation Tests
            • 56.1 General
            • 56.2 Test conditions
            • 56.3 Components
            • 56.4 Limited primary
            • 56.5 Transformers
            • 56.6 Silver recovery unit
          • 57 Ozone Test
          • 58 Strength of Enclosure Test
            • 58.1 General
            • 58.2 Wood, glass, and metal enclosures
          • 59 Strain Relief Test
          • 60 Cord and Cable Push-Back Relief Test
          • 61 Fluid Entry Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 62 Dielectric Voltage-Withstand Test
          • 63 Electrical Continuity Test
            • 63.1 Grounding continuity
            • 63.2 Grounded conductor
        • RATING
          • 64 Electrical Rating
        • MARKING
          • 65 General
          • 66 Informational
            • 66.1 Identification and rating
            • 66.2 Alternate supply voltages
            • 66.3 Multiple factory
            • 66.4 Lamp replacement
            • 66.5 Other than general-purpose receptacle
            • 66.6 On-off switch
            • 66.7 Wiring compartment
            • 66.8 Use of circuit breaker or time-delay fuses
            • 66.9 Projector for professional use
            • 66.10 Component replacement
            • 66.11 Supply circuit and overcurrent protective device
          • 67 Cautionary
            • 67.1 General
            • 67.2 Ultraviolet lamp
            • 67.3 High-pressure lamp
            • 67.4 Capacitor discharge
            • 67.5 Battery
            • 67.6 Hot surface
            • 67.7 Servicing
            • 67.8 Fuse replacement
            • 67.9 Bonding
            • 67.10 Flammable film
            • 67.11 Ungrounded dead-metal parts
            • 67.12 Stability
            • 67.13 Lasers
        • INSTRUCTIONS
          • 68 General
          • 69 Safety Instructions
        • ACCESSORY EQUIPMENT
          • 70 General
          • 71 Construction
          • 72 Performance
            • 72.1 General
            • 72.2 Installation and operation
          • 73 Marking
    • HIGH-PRESSURE LAMPS AND LAMP SYSTEMS
    • APPENDIX A