UL 2556
Wire and Cable Test Methods

DETAILS
Edition Number:4SCC Approved:--
Edition Date:2015-12-15DOD Approved: --
Price Code:CANSI Approved: 2015-12-15
Type:ulcsance

  • SCOPE

    1 Scope

    1.1 This standard describes the apparatus, test methods, and formulas to be used in carrying out the tests and calculations required by wire and cable standards.

    1.2 Specific acceptance requirements are found in individual product standards.

    1.3 Where a test method indicates a “specified” test parameter or condition, the parameter or condition is found in the individual product standard.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • UL Harmonized Standard Title Page
    • Table of Contents
      • Wire and Cable Test Methods
        • 1 Scope
        • 2 General
          • 2.1 Units of measure
          • 2.2 Normative references
          • 2.3 Safety
          • 2.4 Definitions
          • 2.5 Test temperature
          • 2.6 Reports
          • 2.7 General requirements
        • 3 Conductor tests
          • 3.1 Conductor diameter
          • 3.2 Cross-sectional area by mass (weight) method
          • 3.3 Cross-sectional area by diameter method
          • 3.4 DC resistance
          • 3.5 Physical properties of conductors (tensile strength, elongation at break, and ultimate strength)
          • 3.6 High-current heat cycling for aluminum conductors
          • 3.7 Length of lay
        • 4 Insulation, overall covering, and jacket materials tests
          • 4.1 Thickness
          • 4.2 Physical properties (ultimate elongation and tensile strength)
          • 4.3 Dry temperature rating of new materials (long-term aging test)
          • 4.4 Carbon black content
        • 5 Components tests
          • 5.1 Coverage of fibrous braids
          • 5.2 Coverage of shielding (wraps and braids)
          • 5.3 Saturation
        • 6 Electrical tests for finished wire and cable
          • 6.1 Continuity
          • 6.2 Dielectric voltage-withstand
          • 6.3 Dielectric breakdown
          • 6.4 Insulation resistance
          • 6.5 Capacitance and relative permittivity
          • 6.6 Stability factor
          • 6.7 Spark
          • 6.8 Standard arcing test
          • 6.9 Flex arcing test
          • 6.10 Jacket resistance
          • 6.11 AC leakage current test through insulation
          • 6.12 AC leakage current test through jacket
          • 6.13 Resistance of armor
        • 7 Mechanical tests for finished wire and cable
          • 7.1 Fall-in of extruded materials
          • 7.2 Heat shock
          • 7.3 Heat shock resistance
          • 7.4 Shrinkback
          • 7.5 Shrinkback in air
          • 7.6 Cold bend
          • 7.7 Cold impact
          • 7.8 Deformation
          • 7.9 Hot creep elongation and hot creep set
          • 7.10 Abrasion resistance
          • 7.11 Crush resistance
          • 7.12 Crush resistance (accelerated compression rate)
          • 7.13 Impact resistance
          • 7.14 Dielectric breakdown after glancing impact
          • 7.15 Flexibility at ROOM TEMPERATURE after aging
          • 7.16 Flexibility of separator tape under a jacket
          • 7.17 Flexibility of armored cable and metal-sheathed cable
          • 7.18 Swelling and blistering when immersed in liquid
          • 7.19 Durability of ink printing
          • 7.20 Color coating
          • 7.21 Mechanical strength
          • 7.22 Strength and elongation of cable in tension
          • 7.23 Bend test on nylon covered conductors
          • 7.24 Tightness of insulation
          • 7.25 Tightness of armor
          • 7.26 Flexing of shielded cables
          • 7.27 Mandrel pinch of "-R" cords
          • 7.28 Mandrel crush of "-R" cords
          • 7.29 Flexing of "-R" cords
          • 7.30 Armored cable bushing insertion
        • 8 Environmental tests for finished wire and cable
          • 8.1 Copper corrosion
          • 8.2 Ozone resistance
          • 8.3 Copper sulfate test for zinc coatings on formed and unformed steel strip (preece test)
        • 9 Burning characteristics tests
          • 9.1 FT2/FH/Horizontal flame
          • 9.2 Burning particles (dropping)
          • 9.3 FT1
          • 9.4 FV-2/VW-1
          • 9.5 FV-1/Vertical flame
          • 9.6 Vertical tray flame tests (Method 1 – Vertical tray and Method 2 – FT4)
          • 9.7 ST1 limited smoke
          • 9.8 Fire propagation/RPI
          • 9.9 Smoke emission
          • 9.10 Halogen acid gas emission
          • 9.11 Acid gas emission
          • 9.12 Flame test for portable cables/FT5 (United States and Canada only)
        • TABLES
        • FIGURES
    • Annex A (informative)Conductor removal from insulation for tubular specimens
    • Annex B (informative)Determination of density
    • Annex C (informative)Sample calculation for the determination of ultimate elongation or tensile strength at 300 d
    • Annex D (normative)Establishment of parameters and requirements for short-term air oven aging test
    • Annex E (normative)Determination of temperature correction factor
    • Annex F (normative)Procedure and calculations for determining the degree of coverage of fibrous coverings
    • Annex G (normative)Calculation of coverage of shielding (wraps and braids)
    • Annex H (normative)Test enclosure and exhaust duct
    • Annex I (informative) Conversion of pH to acid gas (as % HCl) and acid gas (as % HCl) to pH
    • Annex J (informative)Correlation of NMX wire and cable test method standards with UL 2556/CSA C22.2 No. 2556