1、Designation:D17801(Reapproved 2010)Standard Specification forRubber Insulating Matting1This standard is issued under the fixed designation D178;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in par
2、entheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers acceptance testing of rubberinsulating ma
3、tting for use as a floor covering for protection ofworkers.1.2 Two types of matting,differing in chemical and physicalcharacteristics,are provided and are designated as Type I andType II matting.1.3 The following safety hazards caveat applies only to thetest method portion,Sections 17 to 19,of this
4、specification:This standard does not purport to address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.NOTE1Rubber
5、insulating matting should remain flexible for usethrough normal temperature ranges.NOTE2Rubber as used in this specification is a generic term thatincludes elastomers and elastomer compounds,regardless of origin.2.Referenced Documents2.1 ASTM Standards:2D149 Test Method for Dielectric Breakdown Volt
6、age andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD297 Test Methods for Rubber ProductsChemical Analy-sisD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD518 Test Method f
7、or Rubber DeteriorationSurfaceCracking(Withdrawn 2007)3D570 Test Method for Water Absorption of PlasticsD573 Test Method for RubberDeterioration in an AirOvenD1692 Method of Test for Rate of Burning or Extent andTime of Burning of Cellular Plastics Using a SpecimenSupported by a Horizontal Screen(Wi
8、thdrawn 1976)32.2 American National Standard:4ANSI C84.1 Voltage Ratings for Electric Power Systems andEquipment(60 Hz)3.Terminology3.1 Definitions:3.1.1 user,nas used in 4.3.1,the entity employing theactual worker(s)utilizing the equipment;if no separateemployer,then the individual.3.1.2 voltage,ma
9、ximum retest,nvoltage,either ac rms ordc avg,which is equal to the proof-test voltage for newprotective equipment.3.1.3 voltage,retest,nvoltage,either ac rms or dc avg,that used protective equipment must be capable of withstand-ing for a specified test period without breakdown.3.1.4 voltage,nominal
10、design,na nominal value consis-tent with the latest revision of ANSI C84.1,assigned to thecircuit or system for the purpose of conveniently designatingits voltage class.3.1.5 voltage,maximum use,nthe ac voltage(rms)clas-sification of the protective equipment that designates themaximum nominal design
11、 voltage of the energized system thatmay be safely worked.The nominal design voltage is equal tophase-to-phase voltage on multiphase circuits.3.1.5.1 If there is no multiphase exposure in a system area,and the voltage exposure is limited to phase(polarity on dcsystems)to ground potential,the phase(p
12、olarity on dc sys-tems)to ground potential shall be considered to be the nominaldesign voltage.1This specification is under the jurisdiction of ASTM Committee F18 onElectrical Protective Equipment for Workers and is the direct responsibility ofSubcommittee F18.25 on Insulating Cover-Up Equipment.Thi
13、s standard replacesANSI Standard J 6.7,which is no longer available.Current edition approved Oct.1,2010.Published November 2010.Originallyapproved in 1923.Last previous edition approved in 2005 as D178 01(2005).DOI:10.1520/D0178-01R10.2For referenced ASTM standards,visit the ASTM website,www.astm.or
14、g,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American National Standards Ins
15、titute,11 West 42nd Street,13th Floor,New York,NY 10036.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.5.2 If electrical equipment and devices are insulated,orisolated,or both,such that the multiphase exposure on agrounded wye circui
16、t is removed,then the nominal designvoltage may be considered as the phase-to-ground voltage onthat circuit.4.Significance and Use4.1 This specification covers the minimum electrical,chemical,and physical properties guaranteed by the manufac-turer and the detailed procedures by which such properties areto be determined.The purchaser may at his option perform orhave performed any of these tests in order to verify theguarantee.Claims for failure to meet the specification aresubject to verification