UL 2237
Outline of Investigation for Multi-Point Interconnection Power Cable Assemblies For Industrial Machinery

DETAILS
Edition Number:4SCC Approved:--
Edition Date:2015-04-20DOD Approved: --
Price Code:AANSI Approved: --
Type:outline

  • SCOPE

    1 Scope

    1.1 This outline of investigation covers multi-point interconnection power cable assemblies. They may consist of power cable assemblies, male and female power cable fittings, panel-mounted power cable/conductor fittings and feeder-tap power cable fittings used with industrial machinery in accordance with the National Fire Protection Association Electrical Standard for Industrial Machinery, NFPA 79 that have system voltages up to and including 1000 V.

    1.2 These interconnection power cable assemblies may be used in an industrial environment to distribute the power to branch circuits, including motor branch circuits, of industrial machinery.

    1.3 Devices covered under this outline of investigation are only intended for indoor use, unless otherwise identified.

    1.4 The power cable assemblies covered under this outline of investigation are rated 1000 V or less, and are intended to be used on industrial machinery in accordance with the National Fire Protection Association Electrical Standard for Industrial Machinery, NFPA 79 that have system voltages up to and including 600 V. Each power cable assemblies and fittings are rated in volts and amperes. The electrical ratings are marked, on each device or on a flag label affixed to each individual power cable assembly.

    1.5 The cable assembly fittings and panel-mount fittings are intended to be installed in accordance with the manufacturer’s installation instructions. The cable assembly fittings are intended to be assembled or molded on flexible cord. The power cable assemblies and mating fittings are not intended to be used as a substitute for the fixed wiring of the building structure. The power cable assemblies and mating fittings may be connected to the fixed wiring of the building structure; using a feeder tap fitting or male/female cable fitting.

    1.6 Power cable assemblies and fittings covered under this outline of investigation are not intended to make or interrupt current under load conditions. These power cable assemblies and fittings have been investigated to their marked short-circuit current rating. Power cable assemblies and fittings may specify a maximum ampere rating, type of overcurrent protective device, or both. Unless otherwise marked, the power cable assemblies and fittings are intended to be supplied from an overcurrent protective device of the maximum ampere rating permitted by the Relationship Between Conductor Size and Maximum Rating or Setting of Short-Circuit Protective Device for Power Circuits Table, Table 7.2.10.4, of the National Fire Protection Association Electrical Standard for Industrial Machinery, NFPA 79.

    1.7 This outline of investigation does not cover male-to-male cable assemblies or multi-outlet fittings.

    1.8 These devices are intended for use only with the manufacturer’s same line of products covered under this outline of investigation.

    1.9 These devices are not intended for disconnect use only not for current interrupting. Devices may be investigated for disconnecting means, if so requested and comply with the overload, temperature, resistance to arcing and dielectric voltage withstand testing as described in Table 19.1.

  • TABLE OF CONTENTS
    Expand All

    • Outline Title Page
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Glossary
          • 3 Components
          • 4 Units of Measurement
          • 5 References
        • CONSTRUCTION
          • 6 Accessibility of Uninsulated Live Parts
          • 7 Insulating Materials
            • 7.1 Insulating materials for devices rated 600 V or less
            • 7.2 Insulating materials for devices rated 601 – 1000 V
          • 8 Live Parts
          • 9 Grounding and Dead-Metal Parts
          • 10 Terminals
          • 11 Strain Relief and Cord Entries
          • 12 Spacings
            • 12.1 Spacing for devices rated 600 V or less
            • 12.2 Spacings for devices rated 601 – 1000 V
            • 12.3 Alternate spacings – clearance and creepage distances
          • 13 Assembly
            • 13.1 General
            • 13.2 Polarization
            • 13.3 Mating and interchangeability
            • 13.4 Terminal identification
          • 14 Enclosure
          • 15 Flexible Cord, Cable or Wiring
          • 16 Mounting
          • 17 Environmental Rating
            • 17.1 Jacket adhesion
          • 18 Outdoor Use
        • PERFORMANCE
          • 19 General
          • 20 Mold Stress-Relief Distortion Test
          • 21 Moisture Absorption Test
          • 22 Dielectric Voltage-Withstand Test
          • 23 Insulation Resistance Test
          • 24 Conductor Secureness Test
          • 25 Strain-Relief Test
            • 25.1 Cord-to-fitting test
            • 25.2 Feeder-tap cable systems test
          • 26 Overload Test
          • 27 Temperature Test
          • 28 Resistance to Arcing Test
          • 29 Current-Cycling and Vibration Test
            • 29.1 General
            • 29.2 Current-cycling before vibration test
            • 29.3 Vibration test
            • 29.4 Current-cycling after vibration test
            • 29.5 Calculations
          • 30 Jacket Retention Test
          • 31 Polarization Test
          • 32 Adhesion Test
          • 33 Environmental Enclosure Tests
          • 34 Grounding (Bonding) Path Current Test
          • 35 Cable Pullout Test (For Pin Type or Insulation Displacement Type Terminals)
          • 36 Creep Test (For Pin Type or Insulation Displacement Type Terminals)
          • 37 Short-Circuit Withstand Test
            • 37.1 General
            • 37.2 Protective devices
            • 37.3 Calibration of test circuits
            • 37.4 Alternating-current circuits
            • 37.5 Available current of 10,000 A or less
            • 37.6 Available current more than 10,000 A
            • 37.7 Instrumentations for test currents above 10,000 A
            • 37.8 Direct current circuits
            • 37.9 Calibration characteristics for protective device
          • 38 Humidity Conditioning Test
          • 39 Crush Test
          • 40 No-Load Endurance Test
          • 41 Impact Test (Male and Female Fittings)
          • 42 Abnormal Overload Test
          • 43 Resistance to Corrosion Test
          • 44 Accelerating Aging Tests
            • 44.1 General
            • 44.2 Rubber, EPDM, and TEE compounds
            • 44.3 PVC compounds and copolymers
          • 45 Insulating Materials
            • 45.1 Glow wire test
            • 45.2 Comparative tracking index test
            • 45.3 High-current arc resistance to ignition test
        • MANUFACTURING AND PRODUCTION TESTS
          • 46 Dielectric Voltage-Withstand Test
        • RATINGS
          • 47 General
        • MARKINGS
          • 48 Details
          • 49 Environmental Enclosures
    • Appendix A