UL 122001
General Requirements for Electrical Ignition Systems for Internal Combustion Engines in Class I, Division 2 or Zone 2, Hazardous (Classified) Locations

DETAILS
Edition Number:1SCC Approved:--
Edition Date:2014-08-29DOD Approved: --
Price Code:AANSI Approved: 2014-08-29
Type:ulisa

  • SCOPE

    2 Scope

    This standard provides minimum construction and test requirements in addition to manufacturer installation and maintenance recommendations for the safe operation of ignition systems and components for spark-ignited reciprocating internal combustion engines in Class I, Division 2, Group C or D or Class I, Zone 2, Group IIB or IIA, hazardous (classified) locations. These requirements apply to systems rated for normal operation with secondary voltages less than or equal to 35 kV.

    This standard is intended to cover only ignition systems of reciprocating internal combustion engines that are stationary when in operation. This does not include any application where the engine would be in motion (vehicles) while operating. Applications addressed by the scope of this document include but are not limited to gas compressors, electric power generators, and pumps.

    This standard applies to ignition systems suitable for use in an ambient temperature range of -40°C to +70°C (-40°F to +158°F).

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • UL Harmonized Standard Title Page
    • Table of Contents
    • UL Introduction
    • Foreword
      • Body
        • 1 Purpose
        • 2 Scope
        • 3 References
        • 4 Definitions
        • 5 General requirements
        • 6 Construction and testing requirements
          • 6.1 General
          • 6.2 Power sources
          • 6.3 Ignition control unit
          • 6.4 Primary wires
          • 6.5 Ignition coils
          • 6.6 Secondary leads
          • 6.7 Spark plugs
        • 7 Spark containment
          • 7.1 General
          • 7.2 Secondary leads
          • 7.3 Spark plugs
          • 7.4 Terminations
        • 8 Spark prevention
          • 8.1 General
          • 8.2 Terminations
        • 9 Spark detection/prevention
        • 10 Documentation and marking
          • 10.1 Surface temperature marking requirements
          • 10.2 Manufacturer’s instructional manual
        • 11 Test procedures
          • 11.1 Abrasion test for secondary leads or wiring
          • 11.2 Elevated temperature exposure test
          • 11.3 Chemical compatibility
          • 11.4 Vibration test
          • 11.5 Shielded secondary system tests
          • 11.6 Spark plug pressure and temperature tests
          • 11.7 Secondary lead assembly flashover tests
          • 11.8 Secondary lead UV degradation tests
          • 11.9 Secondary lead bending and dielectric voltage withstand tests
          • 11.10 Spark prevention test
          • 11.11 Primary and secondary terminations pull test
          • 11.12 Spark plug dielectric test
          • 11.13 Secondary lead or wiring insulation cut test
          • 11.14 Surface temperature test
          • 11.15 Impact test
          • 11.16 Secondary lead pull test