1、Designation: D1050 05 (Reapproved 2017)Standard Specification forRubber Insulating Line Hose1This standard is issued under the fixed designation D1050; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A nu
2、mber in parentheses 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 rub
3、berinsulating line hose for use as a portable protective device forprotection of workers from accidental contact with live elec-trical conductors.1.2 Two types of line hose are provided and are designatedas Type I, non-resistant to ozone, and Type II and Type III,resistant to ozone.1.3 Five classes
4、of line hose, differing in electricalcharacteristics, are provided and are designated as Class 0,Class 1, Class 2, Class 3, and Class 4.1.4 Four styles of line hose, differing in designcharacteristics, are provided and are designated as Style A,Style B, Style C, and Style D.1.5 The following precaut
5、ionary caveat pertains only to thetest method portion, Sections 16, 17, 18, 19, of this specifica-tion: 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,health, a
6、nd environmental practices and determine the appli-cability of regulatory limitations prior to use. For specificprecautionary statements, see 18.1.1.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision
7、 on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D297 Test Methods for Rubber ProductsChemical Analy-sisD412 Test Methods for Vulcaniz
8、ed Rubber and Thermoplas-tic ElastomersTensionD570 Test Method for Water Absorption of PlasticsD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic ElastomersD2865 Practice for Calibration of Standards and Equip
9、mentfor Electrical Insulating Materials TestingF819 Terminology Relating to Electrical Protective Equip-ment for Workers2.2 Federal Specification:3PPP-B-636 Box, Shipping, Filterboard2.3 ANSI Standards:4C2National Electrical Safety Code, Section 44C 39.5 Safety Requirements for Electrical and Electr
10、onicMeasuring and Controlling InstrumentationC 84.1 Electric Power Systems and Equipment-VoltageRatings3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 breakdownthe electrical discharge or arc occurringbetween the electrodes and through the equipment being tested.3.1.2 flashove
11、rthe electrical discharge or arc occurringbetween electrodes and over or around, but not through, theequipment being tested.3.1.3 electrical testing facilitya location with qualifiedpersonnel, testing equipment, and procedures for the inspectionand electrical testing of electrical insulating protect
12、ive equip-ment.3.1.4 electrode clearancethe shortest path from the ener-gized electrode to the ground electrode.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
13、-Up Equipment. This standard replacesANSI Standard J 6.1, which is no longer availableCurrent edition approved Dec. 15, 2017. Published December 2017. Originallyapproved in 1949 as D1050 49 T. Last previous edition approved in 2011 asD1050 05(2011). DOI: 10.1520/D1050-05R17.2For referenced ASTM stan
14、dards, 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 Standardization Documents, Order Desk, Bldg. 4, Section D,700 Robbins
15、Ave., Philadelphia, PA 19111-5094, ATTN: NPODS.4Available from American National Standards Institute, 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 StatesThis international standard was de
16、veloped in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13.1.5 insulateds
17、eparated from other conducting surfacesby a dielectric substance (including air space) offering a highresistance to the passage of current.NOTE 1When any object is said to be insulated, it is understood to beinsulated in a suitable manner for the conditions to which it is subjected.Otherwise, it is,
18、 within the purpose of this definition, uninsulated.Insulating covering of conductors is one means of making the conductorinsulated.3.1.6 isolatedan object that is not readily accessible topersons unless special means of access are used.3.1.7 ozonea very active form of oxygen that may beproduced by
19、corona, arcing, or ultra-violet rays.3.1.8 ozone cutting and checkingthe cutting action pro-duced by ozone on rubber under mechanical stress into a seriesof interlacing cracks.3.1.9 rubbera generic term that includes elastomers andelastomeric compounds, regardless of origin.3.1.10 voltage, maximum u
20、sethe ac voltage (rms) rating ofthe protective equipment that designates the maximum nominaldesign voltage of the energized system that may be safelyworked. The nominal design voltage is equal to the phase tophase voltage on multiphase circuits.3.1.11 If there is not multiphase exposure in a system
21、areaand the voltage exposure is limited to phase (polarity on dcsystems) to ground potential, the phase (polarity on dc sys-tems) to ground potential shall be considered to be the nominaldesign voltage. If electrical equipment and devices areinsulated, or isolated, or both, such that the multiphase
22、expo-sure on a grounded wye circuit is removed, then the nominaldesign voltage may be considered as the phase-to-groundvoltage on that circuit.NOTE 2The work practices and methods associated with removingmultiphase exposures at any given work site are not addressed in thisspecification. Users should
23、 refer to ANSI C2, National Safety Code,Section 44, for proper work practices.3.1.12 voltage, nominal designa nominal value consistentwith the latest revision on ANSI C 84.1, assigned to the circuitor system for the purpose of conveniently designating itsvoltage class.3.2 For definitions of other te
24、rms, refer to TerminologyF819.4. 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 perform
25、ed any of these tests in order to verify theguarantee. Claims for failure to meet the specification aresubject to verification by the manufacturer.4.2 Line hose is used for personal protection; therefore,when authorizing its use, a margin of safety should be providedbetween the maximum voltage at wh
26、ich it is used and theproof-test voltage at which it is tested. The relationshipbetween proof-test voltage and the nominal maximum voltageat which line hose shall be used is shown in Table 1.4.3 It is common practice for the user of this type ofprotective equipment to prepare complete instructions a
27、ndregulations to govern in detail the correct and safe use of suchequipment.5. Classification5.1 Line hose covered under this specification shall bedesignated as Type I, Type II, or Type III; Class 0, Class 1,Class 2, Class 3, or Class 4; Style A, Style B, Style C, or StyleD.5.1.1 Type I, non-resist
28、ant 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 ofan elastomer and thermop
29、lastic polymers, elastic in nature.5.1.4 The class designation shall be based on the electricalproperties as shown in Table 1, Table 2,orTable 3.5.1.5 Style A line hose shall be designed in the straight stylewith a constant cross section throughout the length of the linehose (Fig. 1).5.1.6 Style B l
30、ine hose shall be designed in the connector-end style, which is similar to the straight style except that itshall have a molded connector permanently affixed to one endof the line hose (Fig. 1).5.1.7 Style C line hose shall be designed in the extended-lipstyle with major outward extending lips (Fig.
31、 1).5.1.8 Style D line hose shall be designed in the extended lipstyle with major outward extending lips. It shall have a moldedconnector permanently affixed to one end of the line hose (Fig.1).NOTE 3Rubber insulating line hose should remain suitably flexible forapplication and removal through norma
32、l working temperatures of 29 to54.5C (20 to 130F).NOTE 4Separate molded connectors are available to connect twolengths of Style A or Style C line hose.6. Ordering Information6.1 Orders for line hose under this specification shouldinclude the following information:6.1.1 Type,6.1.2 Class,6.1.3 Style,T
33、ABLE 1 Proof-Test/Use Voltage RelationshipClass ofInsulating LineHoseNominalMaximumUse VoltageAPhase-Phase,ac rms, VAC Proof-Test Voltage,rms VDC Proof-Test Voltage,avg, V,0 1 000 5 000 20 0001 7 500 10 000 40 0002 17 000 20 000 50 0003 26 500 30 000 60 0004 36 000 40 000 70 000AExcept for Class O e
34、quipment, the maximum use voltage is based on thefollowing formula:Maximum use voltage = 0.095 ac proof-test voltage 2000The formula takes into account the reduction in the volts per mil capability of thematerial with increasing thickness.D1050 05 (2017)26.1.4 Size, and6.1.5 Length.6.2 The listing o
35、f types, classes, styles, sizes, and lengths isnot intended to mean that all shall necessarily be available frommanufacturers; it signifies only that, if made, they shallconform to the details of this specification. In addition, lengthsother than standard lengths may be obtained to meet fieldconditi
36、ons.6.3 Factory-produced openings located on the top, sides, orlips of the hose are permissible. These openings must bespecified on the purchase order and shall not be larger than 25mm (1 in.) in diameter and the center of the opening shall notbe more than 25 mm from the end of the hose or less than
37、 25mm from the edge of the lips.7. Manufacture and Marking7.1 The line hose shall be constructed in four styles: straightstyle, connector-end style, extended-lip style, and connector-end extended-lip style. The line hose shall be formed with aninterlocking lip of sufficient length to prevent the dev
38、ice frombeing dislodged accidentally from the conductor it covers. Theinterlocking lip shall be closely adjacent to the inside surfacecontour of the outer wall. The adapter end of connector-endstyle line hose shall be not less than 140 mm (512 in.) deep, andTABLE 2 AC Voltage RequirementsTypes I, II
39、, and IIIStyle A and BTypes II and IIIStyle C and DHose Size,ID, in.Test MandrelSize,in.AMinimum MinimumProof-Test Flashover Test Proof-test Flashover TestClass Voltage, Voltage,BClass Voltage, Voltage,Brms V rms V rms V rms V14316 0 5 000 6 000 0 5 000 7 00058916 1 10 000 12 000 1 10 000 20 0001151
40、6 2 20 000 22 000 2 20 000 30 000114 1316 2 20 000 25 000 2 20 000 35 000112 114 3 30 000 30 000 4 40 000 50 0002134 3 30 000 32 000 4 40 000 50 000212 214 3 30 000 35 000 4 40 000 60 000ACommercially available copper, brass, or iron tubing, conduit, or rod that approximates these nominal sizes is a
41、cceptable.BThe flashover test values investigate design capability of each style of line hose.TABLE 3 DC Voltage RequirementsHose Size,ID, in.Test MandrelSize,in.ATypes I, II, and IIIStyle A and BTypes II and IIIStyle C and DMinimum MinimumProof-Test Flashover Test Proof-test Flashover TestClass Vol
42、tage,BVoltage,C, DClass Voltage,BVoltage,C, Davg V avg V avg V avg V14316 0 10 000 12 000 0 10 000 15 00058916 1 30 000 30 000 1 30 000 55 00011516 2 35 000 35 000 2 35 000 60 000114 1316 2 35 000 45 000 2 35 000 65 000112 114 3 50 000 50 000 4 60 000 75 0002134 3 50 000 60 000 4 60 000 75 000212 21
43、4 3 50 000 70 000 4 70 000 90 000ACommercially available copper, brass, or iron tubing, conduit, or rod that approximates these nominal sizes is acceptable.Bdc proof-test values shown in Table 3 are limited due to the inability to seal lip openings.CThe flashover test values investigate design capab
44、ility of each style of line hose.Ddc flashover values were determined using negative polarity.FIG. 1 Typical StylesD1050 05 (2017)3its inside diameter shall be such that it will snugly grip the endof the line hose of the same size which it joins.7.2 Each line hose shall be marked clearly and permane
45、ntlywith the name of manufacturer or supplier, type, class, andASTM D1050. Line hose may be marked by either molding theinformation directly into the hose or by use of a label; eithermethod is equally acceptable. The method shall be at thediscretion of the manufacturer. If a label is used, the color
46、 shallbe that specified for each voltage class: Class 0red, Class1white, Class 2yellow, Class 3green, and Class4orange.8. Chemical and Physical Properties8.1 Each line hose shall conform to the physical require-ments in Table 4 and, for Type I line hose, the determination ofrubber polymer in accorda
47、nce with 19.1.1.9. Electrical Requirements9.1 Each line hose shall withstand the 60-Hz ac proof-testvoltage (rms value) specified in Table 2 or the dc proof testvoltage (average value) specified in Table 3. The proof testshall be performed in accordance with Section 18 and shall berun continuously f
48、or 3 min.9.2 Sample lengths of line hose, as specified in 14.3.2 and14.3.3, shall pass the minimum flashover test values of Table 2or 3 when tested in accordance with 18.2.9.3 Sample lengths of Type II and Type III line hose, asspecified in 14.3.4, shall show no visible effects from ozonewhen tested
49、 in accordance with 18.3. Any visible signs ofozone deterioration, such as checking, cracking, breaks,pitting, etc., shall be considered as evidence of failure to meetthe requirements of Type II and Type III line hose.10. Dimensions and Permissible Variations10.1 SizeThe inside diameter shall indicate the size of theline hose. Standard sizes shall be: 6.3 mm (14 in.), 25 mm (1in.), 31.5 mm (114 in.), 40 mm (112 in.), 50 mm (2 in.), and63.0 mm (212 in.). The permissible variation in size shall be62.0 mm (6116 in.).10.2 L
