UL 1640
Standard for Portable Power-Distribution Equipment

DETAILS
Edition Number:4SCC Approved:--
Edition Date:2016-11-14DOD Approved: --
Price Code:BANSI Approved: 2016-11-14
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover portable power-distribution equipment rated 600 volts or less and 1600 amperes maximum. They are intended for either single- or multi-phase supply and are intended to distribute power in accordance with the National Electrical Code, NFPA 70 (NEC).

    1.2 These requirements cover portable power-distribution equipment intended for use in the following locations:

    a)    Carnivals, circuses, fairs, and similar locations in accordance with Article 525 of the NEC;

    b)    Exhibition halls in accordance with Article 518 of the NEC;

    c)    Motion picture and television studios and similar locations in accordance with Article 530 of the NEC;

    d)    Theaters, audience areas of motion-picture and television studios, and similar locations in accordance with Article 520 of the NEC; and

    e)    Temporary installations at construction sites in accordance with Article 590 of the NEC.

    1.3 These requirements do not cover portable power-distribution equipment:

    a)    Intended to be mounted above or adjacent to the lighting unit it supplies. These devices are covered by the Standard for Stage and Studio Luminaires and Connector Strips, UL 1573.

    b)    Intended to be connected to the load side of branch circuits, such as:

    1)    Relocatable power taps. These devices are covered by the Standard for Relocatable Power Taps, UL 1363;

    2)    Cord sets. These devices are covered by the Standard for Cord Sets and Power-Supply Cords, UL 817;

    3)    Convention-center Cord Sets. These devices are covered by the Standard for Exhibition Display Units, Fabrication and Installation, UL 2305; and

    4)    Current taps. These devices are covered by the Standard for Current Taps and Adapters, UL 498A.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • Part
          • INTRODUCTION
          • 1 Scope
          • 2 Components
          • 3 Units of Measurement
          • 4 Undated References
          • 5 Glossary
        • PART 1 – ALL EQUIPMENT
          • CONSTRUCTION
          • 6 General
          • 7 Current-Carrying Parts
            • 7.1 General
            • 7.2 Bus bars
            • 7.3 Support and securement of live parts
            • 7.4 Internal wiring
          • 8 Electrical Insulation Material
          • 9 Enclosure
            • 9.1 General
            • 9.2 Specific enclosures
            • 9.3 Cast metal
            • 9.4 Sheet metal
            • 9.5 Doors and covers
            • 9.6 Inlet and receptacle covers
            • 9.7 Polymeric
            • 9.8 Enclosure of switches, circuit breakers, or fuses
            • 9.9 Accessibility of live parts
          • 10 Enclosure Performance
          • 11 Corrosion Protection
          • 12 Grounding and Bonding
            • 12.1 General
            • 12.2 Output receptacle grounding
          • 13 Input Connections
            • 13.1 General
            • 13.2 Cord-connected equipment
            • 13.3 Multi-conductor inlet input
            • 13.4 Single-conductor inlets and plugs
            • 13.5 Interlocked inlet assemblies
            • 13.6 Sequentially-interlocked inlet assemblies
            • 13.7 Bus bars
          • 14 Output Connections
            • 14.1 General
            • 14.2 Receptacles
          • 15 Overcurrent Protection
            • 15.1 General
            • 15.2 Circuit breakers
            • 15.3 Fuses
            • 15.4 Fuseholders
          • 16 Spacings
          • 17 Switches
          • 18 Transformers
          • PERFORMANCE
          • 19 General
          • 20 Temperature Test
          • 21 Clamped-Joint Temperature Test
          • 22 Dielectric Voltage-Withstand Test
            • 22.1 General
            • 22.2 Clamped insulating joint
            • 22.3 Insulating barriers
          • 23 Strain-Relief Test
          • 24 Resistance to Rain Test
          • 25 Icing Test
          • 26 Gasket Tests
          • 27 Spring-Closing Cycling Test
          • 28 Metallic Coating Thickness Test
          • RATINGS
          • 29 Details
          • MARKINGS
          • 30 General
          • 31 Public Access
          • 32 Conductors in Parallel
          • 33 Enclosure Type
          • 34 Neutral Connection
          • 35 Qualified Personnel
          • 36 Receptacle Ratings
          • 37 Multi-Pole Receptacle Configuration
          • 38 Single-Pole Inlets or Output Receptacles
          • 39 Supply Cord Without Attachment Plug
          • 40 Switches or Circuit Breakers
        • PART 2 – BUS BAR CLAMPS
          • CONSTRUCTION
          • 41 General
          • PERFORMANCE
          • 42 General
          • MARKINGS
          • 43 Details
        • PART 3 – CABLE-SPLICING BLOCKS
          • CONSTRUCTION
          • 44 General
          • PERFORMANCE
          • 45 General
          • 46 Temperature Test
          • 47 Loose Connection Test
          • 48 Drop Test
          • 49 Pullout Test
          • 50 Crushing Test
          • 51 Insulation Resistance and Dielectric Voltage-Withstand Test
          • 52 Impact Test
          • RATINGS
          • 53 Details
          • MARKINGS
          • 54 Details
        • PART 4 – CONSTRUCTION-SITE EQUIPMENT FOR TEMPORARY INSTALLATIONS IN ACCORDANCE WITH ARTICLE 590 OF THE NEC
          • CONSTRUCTION
          • 55 General
          • 56 Mounting Legs
          • 57 Ground-Fault Protection for Personnel
          • 58 Receptacles
          • 59 Supply Connection
          • 60 Overcurrent Protection
          • 61 Enclosures
          • 62 Spacings
          • PERFORMANCE
          • 63 General
          • 64 Loading Tests
          • 65 Resistance to Rain Test
          • 66 Door Endurance Test
          • MARKINGS
          • 67 Details
    • FOLLOW-UP INSPECTION INSTRUCTIONS
    • APPENDIX A