ASTM D1048-11

    Standard Specification for Rubber Insulating Blankets


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    1. Scope

    1.1 This specification covers acceptance testing of rubber insulating blankets for protection of workers from accidental contact with live electrical conductors, apparatus, or circuits.

    1.2 Two types of blankets are provided and are designated as Type I, not resistant to ozone, and Type II, resistant to ozone.

    1.3 Five classes of blankets, differing in electrical characteristics, are provided and are designated as Class 0, Class 1, Class 2, Class 3, and Class 4.

    1.4 Two styles of blankets, differing in construction characteristics, are provided and are designated as Style A and Style B.

    1.5 The following safety hazards caveat pertains only to the test method portion, Sections 16-19, of this specification: 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    American National Standards

    ANSI/IEEE C 2 National Electrical Safety Code Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE), 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331, http://www.ieee.org.

    C84.1 Electric Power Systems and EquipmentVoltage Ratings (60 Hz) Available from National Electrical Manufacturers Association (NEMA), 1300 N. 17th St., Suite 900, Arlington, VA 22209, http://www.nema.org.

    ASTM Standards

    D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies

    D297 Test Methods for Rubber ProductsChemical Analysis

    D412 Test Methods for Vulcanized Rubber and Thermoplastic ElastomersTension

    D518 Test Method for Rubber Deterioration--Surface Cracking

    D570 Test Method for Water Absorption of Plastics

    D573 Test Method for RubberDeterioration in an Air Oven

    D624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers

    D1388 Test Method for Stiffness of Fabrics

    D2865 Practice for Calibration of Standards and Equipment for Electrical Insulating Materials Testing

    F819 Terminology Relating to Electrical Protective Equipment for Workers


    ICS Code

    ICS Number Code 29.035.20 (Plastic and rubber insulating materials)

    UNSPSC Code

    UNSPSC Code 52121508(Blankets)


    Referencing This Standard
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    DOI: 10.1520/D1048-11

    Citation Format

    ASTM D1048-11, Standard Specification for Rubber Insulating Blankets, ASTM International, West Conshohocken, PA, 2011, www.astm.org

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