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1.1 These test methods cover procedures for testing pressure-sensitive adhesive-coated tapes to be used as electrical insulation. These tapes are classified as follows:

1.1.1 Class 1—Non-elastomeric backings made from materials such as:

Paper, flat or creped, Fabric, uncoated or coated, Cellulose ester films, Polyethylene terephthalate (polyester) films, Fluorocarbon polymer films, Composite filament films, Polyamide films, Polyimide films, and Combinations thereof.

1.1.2 Class 2—Elastomeric backings that are characterized by both high stretch and substantial recovery. These backings are made from materials such as:

Vinyl chloride and co-polymers, Vinylidene chloride and co-polymers, and Polyethylene and co-polymers.

1.2 Laminates of Class 1 and Class 2 backings should be tested according to Class 1 test methods.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazards see Section 3.

1.4 The procedures appear in the sections indicated below and in alphabetical order:

Adhesion Strength to Steel and Backing at Room   Temperature46-53 Adhesion Strength to   Steel and Backing at Low Temperatures46-53 Bond Strength After Solvent Immersion110-115 Breaking Strength and Elongation at Room Temperature37-45 Breaking Strength and Elongation at Low Temperatures37-45 Conditioning6-8 Curling and Twisting140-146 Dielectric Breakdown Voltage83-90 Effect of Accelerated Aging on High-Temperature Tapes97-103 Flagging66-76 Flammability104-109 Hazards/Precautions3 Insulation Resistance at High Humidity91-96 Length of Tape in a Roll28-36 Oil Resistance116-122 Puncture Resistance123-128 Resistance to Accelerated Aging (Heat and Moisture)129-139 Sampling4 Specimen Preparation5 Thermosetting Properties77-82 Thickness21-27 Unwind Force at Room Temperature54-65 Unwind Force at Low Temperatures54-65 Width11-20

Note 1—These procedures apply to both Class 1 and Class 2 tapes except as noted above.

1.5 The values stated in SI units are the standard, unless otherwise noted. If a value for measurement is followed by a value in inch-pound or English units in parentheses, the second value may only be approximate and is for information only. The first stated value is the preferred unit.

Note 2—These test methods are similar to IEC 60454–3, but may differ sometimes in some details.

1.6 This is a fire–test response standard.