1、Designation: F2320 11Standard Specification forRubber Insulating Sheeting1This standard is issued under the fixed designation F2320; 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 parentheses
2、 indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers testing of rubber insulatingsheeting for use as a covering for the protection of workersfrom accidental contact with live electric
3、al conductors, appa-ratus, or circuits.1.2 Two types of sheeting, differing in chemical and physi-cal characteristics, are provided and are designated as Type I,non-resistant to ozone and Type II, resistant to ozone.1.3 Six classes of sheeting, differing in electrical protectioncharacteristics are p
4、rovided and designated as Class 00, Class0, Class 1, Class 2, Class 3, Class 4.1.4 Two styles of sheeting, differing in construction charac-teristics, are provided and are designated as Style A and StyleB.1.5 The follow safety hazards caveat applies only to the testmethod portion, Sections 17-19, of
5、 this specification. Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory require-ments prior to use.
6、NOTE 1Rubber Insulating Sheeting should remain flexible for usethrough normal temperature ranges.NOTE 2Rubber as used in this specification is a generic term thatincludes elastomers and elastomeric compounds, regardless of origin.2. Referenced Documents2.1 ASTM Standards:2D149 Test Method for Dielec
7、tric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD518 Test Method for Rubber DeteriorationSurfaceCracki
8、ng3D570 Test Method for Water Absorption of PlasticsD751 Test Methods for Coated FabricsD1048 Specification for Rubber Insulating BlanketsD1149 Test Methods for Rubber DeteriorationCrackingin an Ozone Controlled EnvironmentD1388 Test Method for Stiffness of FabricsD2136 Test Method for Coated Fabric
9、sLow-TemperatureBend TestD2240 Test Method for Rubber PropertyDurometerHardness2.2 Other Standards:MVSS 302 Motor Vehicle Safety Standard 302 Flammabil-ity of Interior Materials4UL 214 Standard for Tests for Flame-Propagation of Fabricsand Films5ANSI C84.1 Voltage Ratings for Electric Power Systemsa
10、nd Equipment (60 Hz)63. Terminology3.1 Definitions:3.1.1 userthe entity employing the actual worker(s) uti-lizing the equipment; if no separate employer, then the indi-vidual.3.1.2 voltage, maximum usethe ac voltage (rms) classifi-cation of the protective equipment that designates the maxi-mum nomin
11、al design voltage of the energized system that maybe safely worked. The nominal design voltage is equal tophase-to-phase voltage on multiphase circuits.3.1.2.1 DiscussionIf there is no multiphase exposure in asystem area, and the voltage exposure is limited to phase(polarity on dc systems) to ground
12、 potential, the phase (polarityon dc systems) to ground potential shall be considered to be thenominal design 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
13、 Cover-Up Equipment.Current edition approved May 1, 2011. Published June 2011. Originallyapproved in 2003. Last previous edition approved in 2003 as F232003. DOI:10.1520/F2320-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
14、 For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.4Available from the U.S. Department of Transportation, 400 7th Street SW,Room 6111, Mai
15、l Code: NSA-30, Washington, DC 20590.5Available from Underwriters Laboratories (UL), Corporate Progress, 333Pfingsten Rd., Northbrook, IL 60062.6Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Dr
16、ive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.2.2 DiscussionIf the electrical equipment and devicesare insulated or isolated or both, such that the multiphaseexposure on a grounded wye circuit is removed, then thenominal design voltage may be considered as the phase-to-ground
17、 voltage on that circuit.3.1.3 voltage, nominal designa nominal value consistentwith the latest revision of ANSI C84.1, assigned to the circuitor system for the purpose of conveniently designating itsvoltage class.4. Significance and Use4.1 This specification covers the minimum electrical,chemical a
18、nd physical properties guaranteed by the manufac-turer and the detailed procedures by which such properties areto be determined. The purchaser may as his/her option, performor have performed any of these tests in order to verify theguarantee. Claims for failure to meet the specification aresubject t
19、o verification by the manufacturer.4.2 Rubber Insulating Sheeting is used for personal protec-tion; therefore, when authorizing its use a margin of safetyshall be allowed between the maximum voltage at which it isused and the proof-test voltage at which it is tested. Therelationship between proof-te
20、st and the maximum voltage atwhich Sheeting shall be used is shown in Table 1.4.3 Work practices vary from user to user, depending uponmany factors. These factors may include, but are not limited tooperating system voltages, design, work procedures and tech-niques, weather conditions, etc. Therefore
21、, except for therestrictions set forth in this specification because of designlimitations, the use and maintenance of the equipment isbeyond the scope of this specification.4.3.1 It is common practice and the responsibility of the userof this type of protective equipment to prepare completeinstructi
22、ons and regulations to govern the correct and safe useof such equipment.5. Classification5.1 Sheeting covered under this specification shall be des-ignated as Type I or Type II: Class 00, Class 0, Class I, Class2, Class 3, or Class 4; Style A or Style B.5.1.1 Type I, non-resistant to ozone, made fro
23、m any elasto-mer or combination of elastomeric compounds of natural orsynthetic origin.5.1.2 Type II, ozone resistant, made from any elastomer orcombination of elastomeric compounds of natural or syntheticorigin, which may include one or more of the following specialproperties:AFlame ResistanceBOil
24、Resistance5.1.3 The class designation is based on the electrical prop-erties as shown in Tables 1-3.5.1.4 Style A, constructed of the elastomers indicated underType I or Type II, shall be free of any reinforcements.5.1.5 Style B, constructed of the elastomers indicated underType I or Type II, shall
25、incorporate a reinforcement orreinforcements; this shall not adversely affect the dielectriccharacteristics of the sheeting.6. Ordering Information6.1 Orders for Rubber Insulating Sheeting under this speci-fication should include the following information:6.1.1 Type,6.1.2 Class,6.1.3 Width,6.1.4 Len
26、gth, and6.1.5 Style.6.2 The listing of types, classes, widths, length and styles isnot intended to mean that all shall necessarily be available frommanufacturer; it signifies only that, if made, they shall conformto the detail of this specification.7. Manufacture and Marking7.1 The sheeting shall co
27、nsist of a rubber compound with asurface free of harmful physical irregularities, as defined in11.1, and may have one or more fabric inserts. Any such fabricinsert shall not affect adversely the dielectric characteristics ofthe sheeting.7.2 The sheeting shall be marked clearly and permanently ata ma
28、ximum interval of 0.33 m (1ft) with the name of themanufacturer or supplier, ASTM (this specification#), Type,and Class.8. Chemical and Physical Requirements8.1 Insulating Sheeting shall conform to the applicablechemical and physical requirements in Table 4.9. Electrical Requirements9.1 The entire l
29、ength when new (unused) shall withstand the60-Hz ac proof-test voltage (rms value), Table 2 or the dcTABLE 1 Proof Test/Use RelationshipClass ofInsulatingSheetingMaximum ACUse Voltagems,VAPhase-Phaseac rms, maxAC Proof-TestVoltage, rms VMaximum DCUse Voltage,avg, VDC Proof-TestVoltage, avg V00 500 2
30、500 750 10 0000 1000 5000 1500 20 0001 7500 10 000 11 250 40 0002 17 000 20 000 25 500 50 0003 26 500 30 000 39 750 60 0004 36 000 40 000 54 000 70 000AExcept for Class 00 and 0 equipment, the maximum use voltage is based onthe following formula: maximum use voltage (maximum nominal design voltage)
31、=0.95 ac proof-test voltage2000.TABLE 2 AC Electrical Test RequirementsClassACElectrodemmClearancesminAin.Proof TestVoltagerms VDielectricBreakdownTest Voltagerms V00 76 3 2500 40000 76 3 5000 60001 76 3 10 000 20 0002 127 5 20 000 30 0003 178 7 30 000 40 0004 254 10 40 000 50 000AThese nominal clea
32、rances are intended to avoid flashover and may beincreased from the standard of 100 kPa (1 atm) barometric pressure and averagehumidity by no more than 51 m (2 in.) when required by change in atmosphericconditions. These clearances may be decreased if atmospheric conditions permit.F2320 112proof-tes
33、t (average value) specified in Table 3. The test voltageshall be applied continuously for at least 3 min.9.2 The sheeting material, when tested between 50-mm (2in.) disk electrodes with edges rounded to a radius of 6 mm(0.25 in.), shall show a 60-Hz dielectric strength of not lessthan the value show
34、n in Table 2, when tested in accordancewith 18.4.10. Dimensions and Permissible Variations10.1 WidthStandard width shall be 914 6 25 mm (36 61 in.)10.2 ThicknessThe thickness of the sheeting shall be asspecified in Table 5.11. Workmanship and Finish11.1 The sheeting shall be free of harmful physical
35、 irregu-larities, which can be detected by a thorough test or inspection.11.1.1 Harmful physical irregularities may be defined as anyfeature that disrupts the uniform surface and represents apotential hazard to the user, such as pinholes, cracks, blisters,cuts, conductive imbedded foreign matter cre
36、ases, pinchmarks, voids (entrapped air), and prominent ripples.11.2 Nonharmful IrregularitiesSurface irregularities orimperfections may be present on all rubber sheeting due toinherent difficulties in the manufacturing process. These irregu-larities or imperfections may appear as indentations, protu
37、ber-ances, or imbedded foreign material that are acceptable pro-vided that:11.2.1 The indentation or protuberance tends to blend into asmooth slope upon stretching of the material. The rubberthickness at any irregularity conforms to the thickness require-ments.11.2.2 The rubber thickness at any irre
38、gularity conforms tothe thickness requirements.11.2.3 Foreign material remains in place when the sheetingis bent and stretches equally with the material surrounding it.12. Guarantee12.1 The manufacturer or supplier shall replace withoutcharge to the purchaser, unused sheeting which, at any timewithi
39、n a period of (12) months from date of initial delivery ofshipment to the purchaser or his/her designee, fails to pass thetests in this specification. The guarantee will be binding on themanufacturer or supplier only if the sheeting has been properlystored and has not been subjected to more than an
40、originalacceptance test and one retest.12.2 Any acceptance test made by the purchaser, or thepurchasers designee, shall be performed within the first two (2)months of the guarantee period unless otherwise specified.NOTE 3Proper storage means that the sheeting is stored withoutdistortion, and not sto
41、red directly above or in proximity to steam pipes,radiators, or other sources of artificial heat, or exposed to direct sunlightor sources of ozone. It is desirable that the ambient storage temperaturenot exceed 36C (95F).13. Sampling13.1 Each roll of sheeting in a lot or shipment shall besubject to
42、inspection and test to meet the requirement ofSections 7, 9.1, 11 and 15.13.2 An original sample of one roll or 1 % of the lot orshipment, whichever is greater, shall be selected at randomfrom the lot or shipment for the test requirements of 9.2 andSections 8 and 15. If a failure occurs in the first
43、 sample, asecond sample of the same quantity shall be selected andtested.Asufficient amount of material shall be cut from the endof a roll or rolls selected from the lot for the test.14. Rejection14.1 Individual rolls shall be rejected if they fail to meet themanufacturing and marking requirements o
44、f Section 7, theelectrical requirements of Section 9, the width requirements of10.1, the thickness requirements of 10.2, or the workmanshiprequirements of Section 11.14.2 The entire lot or shipment of sheeting shall be rejectedunder any of the following conditions:14.2.1 If 5 % or more of the sheeti
45、ng in a shipment fails tomeet the requirements of 9.1.14.2.2 If two dielectric breakdowns that do not meet thedielectric strength value specified in 9.2 occur in five tests onthe specimen.14.2.3 If one dielectric breakdown of five tests on theoriginal and one or more dielectric breakdowns of five te
46、sts onan additional specimen fail to meet the dielectric strength valuespecified in 9.2.14.2.4 If the coating sample specimens of Type II sheeting,using the sampling methods and criteria specified in 19.1.1.1-19.1.1.3 fail to meet the ozone resistance requirements of 9.2.14.2.5 (If Applicable)If the
47、 coating sample specimens ofType II sheeting using the sampling methods and criteriaspecified in 19.1.3 fail to meet the oil resistance requirementsof Table 4.14.2.6 (If Applicable)If the Sheeting sample specimens ofType II sheeting using the sampling methods and criteriaspecified in 19.2.8 fail to
48、meet the flame-resistant requirementsof Table 4.14.3 The testing shall be terminated and the manufacturer orsupplier notified if, during the course of testing, 5 % or more,of the sheeting in a lot or shipment fail to meet the require-ments of 9.1, 9.2 or as determined by the rejection criteria of14.
49、1 and 14.2. The manufacturer or supplier may in such caserequire the purchaser to submit proof that the test procedureand equipment conform to the appropriate paragraphs ofTABLE 3 DC Electrical Test RequirementsClassDCElectrodemmClearancesminAin.Proof TestVoltageBrms VDielectricBreakdownTest Voltagerms V00 76 3 10 000 13 0000 76 3 20 000 35 0001 76 3 40 000 60 0002 152 6 50 000 70 0003 203 8 60 000 80 0004 305 12 70 000 90 000AThese nominal clearances are intended to avoid flashover and may beincreased from the standard of 100 kPa (1 atm) barometric pressure a
