1、Designation: F 2320 03Standard Specification forRubber Insulating Sheeting1This standard is issued under the fixed designation F 2320; 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 parenthes
2、es indicates the year of last reapproval. Asuperscript epsilon (e) 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 elect
3、rical 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 ar
4、e provided 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,
5、 of 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 u
6、se.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:2D 149 Test Method for Di
7、electric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD 412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD 471 Test Method for Rubber PropertyEffect of LiquidsD 518 Test Method for Rubber Deterioration-Surfa
8、ceCrackingD 570 Test Method for Water Absorption of PlasticsD 751 Test Methods for Coated FabricsD 1048 Specification for Rubber Insulating BlanketsD 1149 Test Method for Rubber DeteriorationSurfaceOzone Cracking in ChamberD 2136 Test Method for Coated FabricsLow TemperatureBend TestD 2240 Test Meth
9、od for Rubber Property Durometer Hard-ness2.2 Other Standards:MVSS 302 Motor Vehicle Safety Standard 302 Flammabil-ity of Interior Materials3UL 214 Standard for Tests for Flame-Propagation of Fabricsand Films4ANSI C84.1 Voltage Ratings for Electric Power Systemsand Equipment (60 Hz)53. Terminology3.
10、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 nominal design voltage of the energized sy
11、stem 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 potential, the phase (polarityon dc
12、systems) to ground potential shall be considered to be thenominal design voltage.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
13、phase-to-ground voltage on that circuit.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.Current edition approved Nov. 1, 2003. Published December
14、2003.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from the U.S. Department of Transportation, 4
15、00 7th Street SW,Room 6111, Mail Code: NSA-30, Washington, DC 20590.4Available from Underwriters Laboratories (UL), Corporate Progress, 333Pfingsten Rd., Northbrook, IL 60062.5Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1Copyright ASTM In
16、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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. Significanc
17、e 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 as his/her option, performor have performed any of these tests in order to verify
18、 theguarantee. Claims for failure to meet the specification aresubject to 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 pr
19、oof-test voltage at which it is tested. Therelationship between proof-test 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, des
20、ign, work procedures and tech-niques, 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.4.3.1 It is common practice and the responsibility of t
21、he userof this type of protective equipment to prepare completeinstructions 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 Cl
22、ass 4; Style A or Style B.5.1.1 Type I, non-resistant to ozone, made from any elas-tomer 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 inclu
23、de one or more of the following specialproperties:AFlame ResistanceBOil 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
24、, constructed of the elastomers indicated underType I or Type II, shall 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 includ
25、e the following information:6.1.1 Type,6.1.2 Class,6.1.3 Width,6.1.4 Length, and6.1.5 Style.7. Manufacture and Marking7.1 The sheeting shall consist 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 fabric
26、insert shall not affect adversely the dielectric characteristics ofthe sheeting.7.2 The sheeting shall be marked clearly and permanently ata maximum interval of 0.33 m (1ft) with the name of themanufacturer or supplier, ASTM (this specification#), Type,and Class.8. Chemical and Physical Requirements
27、8.1 Insulating Sheeting shall conform to the applicablechemical and physical requirements in Table 4.9. Electrical Requirements9.1 The entire length when new (unused) shall withstand the60-Hz ac proof-test voltage (rms value), Table 2 or the dcproof-test (average value) specified in Table 3. The tes
28、t 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 shown in Table 2, when tested in accordancewith 18.
29、4.TABLE 1 Proof Test/Use RelationshipNOTEThe ac voltage (rms) classification of the protective equipmentdesignates the maximum nominal design voltage of the energized systemthat may be safely worked. The nominal design voltage is equal to: (a) Thephase to phase voltage on multiphase circuits, or (b)
30、 the phase to groundvoltage on single phase grounded circuits.Class ofInsulatingSheetingMaximumUse VoltageAPhase-Phaseac rms, maxAC Proof-TestVoltage, rms VDC Proof-TestVoltage, avg V00 500 2500 10 0000 1000 5000 20 0001 7500 10 000 40 0002 17 000 20 000 50 0003 26 500 30 000 60 0004 36 000 40 000 7
31、0 000AExcept for Class 00 and 0 equipment, the maximum use voltage is based onthe following formula: maximum use voltage (maximum nominal design voltage) =0.95 ac proof-test voltage2000.TABLE 2 AC Electrical Test RequirementsClassACElectrodemmClearancesminAin.Proof TestVoltagerms VDielectricBreakdow
32、nTest 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 clearances are intended to avoid flashover and may beincreased from the standard of 100 kPa (1 atm) barometric pressure and averagehumidity by no more
33、 than 51 m (2 in.) when required by change in atmosphericconditions. These clearances may be decreased if atmospheric conditions permit.F232003210. 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 asspe
34、cified in Table 5.11. Workmanship and Finish11.1 The sheeting shall be free of harmful physical 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 haza
35、rd to the user, such as pinholes, cracks, blisters,cuts, conductive imbedded foreign matter creases, 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
36、manufacturing process. These irregu-larities or imperfections may appear as indentations, protuber-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 a
37、ny irregularity conforms to the thickness require-ments.11.2.2 The rubber thickness at any irregularity 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
38、 supplier shall replace withoutcharge to the purchaser, unused sheeting which, at any timewithin 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 su
39、pplier only if the sheeting has been properlystored and has not been subjected to more than an 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
40、specified.NOTE 3Proper storage means that the sheeting is stored withoutdistortion, and not stored 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 e
41、xceed 36C (95F).13. Sampling13.1 Each roll of sheeting in a lot or shipment shall besubject to inspection and test by the manufacturer includingelectrical proof test to levels required in Table 2 or Table 3 andSections 7, 9.1, 10, 11, and 15.13.2 An original sample of sufficient material shall be cu
42、tfrom the end of a roll or rolls selected from the lot for the testrequirements of Sections 8 and 9. A lot is defined as thatquantity of material produced by a common manufacturingprocess during a consecutive time period. If failure occurs inthe first sample, a second sample of the same quantity sha
43、ll beselected and tested.TABLE 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 cl
44、earances 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 mm (2 in.) when required by change in atmosphericconditions. These clearances may be decreased if atmospheric conditions permit.BDC Proof Test
45、voltages were determined using negative polarity.TABLE 4 Physical Requirements for SheetingType I Type IIStyle A Style B Style BTensile strength, minMpa(psi)4.83 (700) 4.83 (700) 4.83 (700)Resistance to Acceleratedheat-aging, max. loss warpand fill %A20 20 20Bursting Strength, min,Mpa (psi)1.72 (250
46、) 1.72 (250) 1.72 (250)Tear Resistance, Min., N (lb)WarpFill1.3 (6)1.3 (6)1.3 (6)1.3 (6)1.3 (6)1.3 (6)Low temperatureResistanceBNo Cracking No Cracking No CrackingPuncture resistance, minKN/m (lbf/in.)18 (100) 29 (150) 18 (100)Moisture absorption, maxIncreaseC%333Flame resistance, Type II AHorizonta
47、lVerticalN/AN/AN/AN/ASelf-ExtinguishingPassOzone resistance, Type IIDBent LoopN/A N/A No CrackingOil resistance, max, volumeIncrease,E% Type II BN/A N/A 4Elongation, min %Tension set, max, mm (in.)5006.4 (0.25)5006.4 (0.25)5006.4 (0.25)Drape Stiffness, max at25C (77F), min (in.)89 (3.5) 89 (3.5) 89
48、(3.5)Drape Stiffness, max at-10 (14F), mm (in.)110 (4.5) 110 (4.5) 110 (4.5)Flex Stiffness, max at25C (77F), Nm (in.lbf)0.028 (0.25) 0.028 (0.25) 0.028 (0.25)Flex Stiffness, max at-10C (14F), Nm (in.lbf)0.034 (0.30) 0.034 (0.30) 0.034 (0.30)A70C (158F) for 7 days.B-40C (-40F) for 4 h.CDistilled wate
49、r 23C (75F).D50 pph for 3 h 40C.EASTM Oil No. 2 room temperature for 24 h.TABLE 5 Thickness MeasurementClassThicknessmm in.00 0.45 to 0.56 0.018 to 0.0220 0.75 to 1.02 0.030 to 0.0401 0.90 to 1.50 0.035 to 0.0592 2.40 to 3.20 0.094 to 0.1263 2.80 to 3.60 0.100 to 0.1424 3.05 to 4.05 0.100 to 0.159F232003314. Rejection14.1 Individual rolls shall be rejected if they fail to meet themanufacturing and marking requirements of Section 7, theelectrical requirements of Section 9, the width requirements of10.1, the thickness requirements of 10.2, or the w
