UL 1097
Double Insulation Systems for Use in Electrical Equipment

DETAILS
Edition Number:6SCC Approved:--
Edition Date:2012-02-01DOD Approved: --
Price Code:AANSI Approved: 2016-04-26
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover electrically operated equipment marked "Double Insulation" or "Double Insulated" to be used in accordance with the National Electrical Code, ANSI/NFPA 70 .

    1.2 Equipment marked "Double Insulation" or "Double Insulated" shall comply with the applicable requirements in this standard and the standard covering the particular type of equipment – the end-product standard. In cases where the end-product standard contains requirements for double insulation, that standard takes precedence.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Units of measurement
            • 2.2 Undated references
          • 3 Glossary
        • CONSTRUCTION
          • 4 General
          • 5 Reinforced Insulation
            • 5.1 General
            • 5.2 Brush caps and brush holders
            • 5.3 Commutator and end turns of the armature winding
            • 5.4 Switches
            • 5.5 Power-supply cord
            • 5.6 Internal wiring
            • 5.7 Other locations
          • 6 Flexible Cord
          • 7 Strain Relief
          • 8 Bushings
          • 9 Capacitors
          • 10 Transformers
          • 11 Spacings
          • 12 Internal Wiring
        • PERFORMANCE
          • 13 Leakage Current Test
          • 14 Dielectric Voltage-Withstand Tests
          • 15 Insulation Resistance Test
          • 16 Resistance to Impact Tests
          • 17 Overload Tests on Isolating Transformers
          • 18 Overload Test on Motors
          • 19 Abnormal Operation Test
          • 20 Investigation of Armature Employing Reinforced Insulation Test
          • 21 Moisture Resistance Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 22 Production-Line Dielectric Voltage-Withstand Test
        • MARKINGS
          • 23 General