1、Designation:F267708a(Reapproved 2013)Standard Specification forElectrically Insulating Aprons1This standard is issued under the fixed designation F2677;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numbe
2、r in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the acceptance testing ofelectrically insulating aprons for the protection of workersfrom incidental contact with live
3、 electrical apparatus or cir-cuits.1.2 The objective of this specification is to prescribe func-tion and performance criteria for insulating aprons that meet aminimum level of electrically insulating and physical perfor-mance characteristics.1.3 Three types of aprons are provided and are designated
4、asType I,non-resistant to ozone,Type II and Type III,resistant toozone.1.4 Six classes of insulating aprons,differing in electricalcharacteristics,are provided and are designated as Class 00,Class 0,Class 1,Class 2,Class 3,and Class 4.2.Referenced Documents2.1 ASTM Standards:2D1048 Specification for
5、 Rubber Insulating BlanketsF819 Terminology Relating to Electrical Protective Equip-ment for WorkersF1742 Specification for PVC Insulating SheetingF2320 Specification for Rubber Insulating Sheeting3.Terminology3.1 Definitions:3.1.1 exposed areathe area of the electrically insulatingapron that does n
6、ot contain any stitching or fasteners.3.1.2 exposure zonethe area on the front of theelectrically-insulated apron 1 in.from the fasteners and stitch-ing or borders.3.1.3 For definitions of other terms,refer to TerminologyF819.4.Significance and Use4.1 This specification covers the minimum electrical
7、,chemical and physical properties,and design characteristics forinsulating aprons and the procedures by which properties are tobe determined.The purchaser may as his/her option,performor have performed any of these tests in order to verify anymanufacturer claim.Claims for failure to meet the specifi
8、cationare subject to verification by the manufacturer.4.2 The insulating materials used in aprons in this specifi-cation are designed for personal protection;therefore,whenauthorizing its use a margin of safety shall be allowed betweenthe maximum voltage at which it is used and the proof-testvoltage
9、 at which it is tested.The relationship between proof-test and the maximum voltage at which materials shall be usedis shown in Table 1.4.3 Work practices vary from user to user,depending uponmany factors.These factors may include,but are not limited to,operating system voltages,design,work procedure
10、s andtechniques,weather conditions,etc.Therefore,except for therestrictions set forth in this specification because of designlimitations,the use and maintenance of the equipment isbeyond the scope of this specification.4.4 It is common practice and the responsibility of the userof this type of prote
11、ctive equipment to prepare completeinstructions and regulations to govern the correct and safe useof such equipment.5.Classification5.1 Insulating aprons covered under this specification shallbe designated as Type I,Type II or Type III;and as Class 00,Class 0,Class 1,Class 2,Class 3,or Class 4.5.1.1
12、 Type I,non-resistant to ozone,made from a high-gradecis-1,4-polyisoprene rubber compound of natural or syntheticorigin,properly vulcanized.5.1.2 Type II,ozone-resistant,made of any elastomer orcombination of elastomeric compounds.5.1.3 Type III,ozone-resistant,made of any combination ofelastomer an
13、d thermoplastic polymers,elastic in nature.5.1.4 The class designation shall be based on the electricalproperties as shown in Table 1.1This specification is under the jurisdiction of ASTM Committee F18 onElectrical Protective Equipment for Workers and is the direct responsibility ofSubcommittee F18.
14、15 on Worker Personal Equipment.Current edition approved Sept.1,2013.Published September 2013.Originallyapproved in 2008.Last previous edition approved in 2008 as F2677-08a.DOI:10:1520/F2677-08AR13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at
15、serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Ordering Information6.1 Orders for insulating aprons und
16、er this specificationshould include the following information:6.1.1 Type,6.1.2 Class,and6.1.3 Design or catalogue number.6.1.4 The listing of types and classes is not intended to meanall shall necessarily be available from manufacturers;it signi-fies only that,if made,they shall conform to the details of thisspecification.7.Manufacture and Marking7.1 The electrical insulating aprons shall be Type I,Type IIor Type III materials and shall be free of irregularities asdefined in Section 11.The elect
