ASTM F2715-2008 Standard Specification for Temporary Protective Equipotential Bond Mat To Be Used on De-Energized Equipment.pdf

1、Designation: F 2715 08Standard Specification forTemporary Protective Equipotential Bond Mat To Be Usedon De-Energized Equipment1This standard is issued under the fixed designation F 2715; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revis

2、ion, the year of last revision. A number 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 manufacture and testing ofthe temporary protective equipotential bond m

3、at used on oraround de-energized electrical equipment.1.2 It is common practice for users of protective equipmentto prepare complete instructions and regulations to govern indetail the correct use and maintenance of such equipment.1.3 The use and maintenance of this equipment is beyondthe scope of t

4、his specification.1.4 It is recognized that the use of temporary protectiveequipotential bond mats requires additional equipment forinstallation and use, typically temporary connecting jumperassemblies.2. Referenced Documents2.1 ASTM Standards:2B33 Specification for Tinned Soft or Annealed CopperWir

5、e for Electrical PurposesD 2261 Test Method for Tearing Strength of Fabrics by theTongue (Single Rip) Procedure (Constant-Rate-of-Extension Tensile Testing Machine)2.2 Other Standards:Fed Std 191/5100 Strength and Elongation, Breaking ofWoven Cloth; Grab MethodFed Std 191/5874 Temperature, Low; Effe

6、ct on CoatedClothFed Std MVSS302 Flammability of Interior MaterialsA-A-59551 Wire, Electrical, Copper Un-insulated3. Terminology3.1 Definitions:3.1.1 bonding, nthe mechanical interconnection of con-ductive parts to maintain a common electrical potential.3.1.2 Equipotential Grounding System, ntempora

7、rygrounding system placed in such locations and arranged insuch a manner as to minimize the likelihood of workers beingexposed to hazardous differences in electrical potential.3.1.3 carrier, nthe main body of the equipotential bondmat on which the flat braid conductor is sewn.4. Classification4.1 Eq

8、uipotential bond mats covered under this specifica-tion shall be designated as Type I or Type II; Class A or ClassB; Style 1 or Style 2; Grid Conductor 1 to 24 and CarrierMaterial I or II.4.1.1 Type I, capable of being cascaded (joined together).4.1.2 Type II, without capability of being cascaded.4.

9、1.3 Class A, with continuity cable.4.1.4 Class B, without continuity cable.4.1.5 Style 1, exposed conductor termination.4.1.6 Style 2, jacketed conductor termination.4.1.7 Grid Conductor, 1 to 24, in accordance with thenormal flat width, or equivalent, of the flat braid conductorscombination that ma

10、kes up the grid conductor and perimeterconductor of the carrier, as shown in Table 1.4.1.8 Carrier material I, slip resistant.4.1.9 Carrier material II, without slip resistance.5. Ordering Information5.1 Orders for equipotential bond mats under this specifica-tion shall include the ASTM designation

11、and the followinginformation:5.1.1 Quantity,5.1.2 Type,5.1.3 Style,5.1.4 Class,5.1.5 Grid Conductor,5.1.6 Carrier Material,5.1.7 Size, specified in length and width dimensions, notingany specific configuration requirements; rectangular, L shape,rectangular shape with access hole in middle, etc.1This

12、 specification is under the jurisdiction of ASTM Committee F18 onElectrical Protective Equipment for Workers and is the direct responsibility ofSubcommittee F18.45 on Mechanical Apparatus.Current edition approved Oct. 1, 2008. Published November 2008.2For referenced ASTM standards, visit the ASTM we

13、bsite, 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United St

14、ates.5.2 The listing of types, styles, classes, grid conductors,carrier material and size is not intended to mean that all shallnecessarily be available from the manufacturers; it signifiesonly that, if made they shall conform to the details of thisspecification.6. Manufacture and Marking6.1 Each eq

15、uipotential bond mat shall be marked clearly andpermanently with the name of the manufacturer or supplier,ASTM F 2715, serial number, type, style and class.7. Chemical and Physical Requirements7.1 Equipotential bond mats samples selected in accordancewith Section 10 shall conform to the physical and

16、 chemicalrequirements as specified in this section.7.2 Carrier Strength:7.2.1 Tensile (Grab)Carrier material shall be capable of atensile (grab) of 1828 2037 N (411 458 lbf) in accordancewith Fed Std 191/5100.7.2.2 Tongue TearCarrier material shall be capable oftongue tear of 485 516 N (109 116 lbf)

17、 in accordance withTest Methods D 2261.7.2.3 Cold FlexureCarrier material shall be capable of alow cold crack of -40 C (-40 F) in accordance with Fed Std191/5874-19787.3 Flat braid conductor shall comply with A-A-59551 andSpecification B33requirements and have the properties con-tained in Table 2 or

18、 greater.7.4 Carrier Fire ResistanceThe flame resistance of thecarrier shall be performed in accordance with Fed StdMVSS302 and shall be self extinguishing.8. Dimensions and Permissible Variations8.1 Equipotential bond mat size is the combination of gridspacing and perimeter dimensional configuratio

19、ns.8.2 The length and width of grid spacing shall be 200 by200 mm (8 by 8 in.), with a permissible variation of 625 mm(61 in).8.3 Thread stitch spacing shall be 6 stitches or more per 25.4mm (6 stitches or more per 1 in).8.4 A minimum adequate area must be provided for footingsurface of 0.37 m2(4 ft

20、2) and a minimum of 0.6 m linear (2 ft)in any direction, with a permissible variation of 625 mm ( 61in).9. Workmanship and Finish9.1 Components shall be free of structural defects that affecthandling or performance, or both.9.2 Cosmetic and other surface irregularities which do notaffect strength, p

21、erformance, or handling, or combinationthereof, are not cause for rejection.10. Sampling10.1 A product model represents a manufacturers designspecification standard according to which the production lot ismanufactured.10.2 A production lot shall consist of all equipotential bondmats of one product m

22、odel produced at one time.10.3 A test sample consists of two specimens, selected atrandom, for each different test specified. When a failure occursin one specimen from the first sample, a second sample fromthe same lot shall be selected and tested. If the second sample(two specimens) passes, the lot

23、 shall be accepted. If the onespecimen from the second sample fails, the lot shall berejected.11. Electrical Test11.1 Design TestThe design test that follows shall bemade on test samples of each product model to verify that therequirements of this specification are met.11.1.1 Test set up configurati

24、on shall be as specified in Fig.1.11.1.2 Test shall be performed with grid both facing up anddown.11.1.3 The equipotential bond mat is to be placed on theearth, laid out flat, with one corner connecting strap attached tothe source conductor witha3m(10ft)1/0ground cable, withthe same corner connected

25、 to a ground rod 1.22 m (4 ft) feet inthe ground, witha3m(10ft)1/0ground cable. The ground rodshall be spaced 3 m (10 ft) from the bond mat.11.1.4 Connect a 1000 V resistor (610 %) with one leadconnected to a 0.3 m by 0.3 m by 11.34 kg (12 in. by 12 in. by25 lb) steel plate in the center of the equi

26、-pontential bond matand another lead connected to the source conductor.11.1.5 Energize the source conductor at 8 kV and measurethe voltage across or current through, the 1000 V resistor. Thevoltage across the resistor can be recorded by a digitalTABLE 1 Bond Mat Conductor SizeGridPatternGrid, in. Pe

27、rimeter, in. Class11412 B21412 B31434 B41212 B51234 B63434 B71414 A81412 A91434 A101212 A111234 A123434 A131414 A141412 A151434 A161212 A171234 A183434 A191414 A201412 A211434 A221212 A231234 A243434 ATABLE 2 Flat Braid Minimum SpecificationsNominalBraid Width,mm (in.)NominalThickness,mm (in.)Strand

28、AWGNo. ofStrandsNo. WiresPer Strand6.35(14) 0.76(0.03) 36 24 712.7 (12) 0.76(0.03) 36 48 819 (34) 1.0(0.04) 36 48 18F2715082oscillograph and the readings converted mathematically tocurrent. The test current is to be measured to a precision of 63%.11.1.6 Test duration shall be 14.5 cycles minimum.11.

29、1.7 The voltage across the resistor shall not exceed 5 Vand the current shall not exceed 0.005 amps.11.2 Resistance Test:11.2.1 Measure the resistance, corner to corner diagonally;the resistance shall be less than 1 milliohm per foot ofmeasured length.12. Acceptance, Rejection and Rehearing12.1 At t

30、he option of the purchaser, a production lot may besubjected to the following:12.2 Visual inspection for workmanship and finish in accor-dance with Section 9. Individual equipotential bond mats thatdo not conform may be rejected.12.3 Visual inspection for grid spacing, stitch complianceand adherence

31、 to manufacturers design specification in accor-dance with Section 8. Individual equipotential bond mats thatdo not conform shall be rejected.12.4 Chemical and Physical requirements are given inSection 7. Individual equipotential bond mats that do notconform shall be rejected.12.5 Resistance, corner

32、-to-corner requirements are given in12.2. Individual equipotential bond mats that do not conformshall be rejected.12.6 The entire lot of shipment of equipotential bond matsshall be rejected under the following conditions. Rejectionshall be reported to the producer or supplier promptly and inwriting.

33、 In case of dissatisfaction with the results of the test, theproducer or supplier may make a claim for a rehearing.12.6.1 Rejection shall be reported to the producer or sup-plier promptly and in writing. In case of dissatisfaction with theresults of the test, the producer or supplier may make a clai

34、mfor a rehearing.12.7 If electrical, or mechanical testing, or both, are re-quired by a user prior to acceptance, minimum testing shall bedone in accordance with this specification for any part or for allof the tests to be performed.13. Certification13.1 When specified in the purchase order or contr

35、act, amanufacturers or suppliers certification shall be furnished tothe purchaser that the equipotential bond mats were manufac-tured, sampled, tested and inspected in accordance with thisspecification and found to meet the requirements. Whenspecified in the purchase order or contract, a report of d

36、esigntest shall be furnished.14. Packaging and Package Marking14.1 The package shall be marked with the name or logo ofthe manufacturer.14.2 A packing list indicating manufacturers product num-bers and quantities of each different equipotential bond matshall be provided with each shipment.14.3 Each

37、shipment shall be packaged to provide protectionof the contents for the mode of transportation.15. Keywords15.1 bond; equipotential; matASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this stan

38、dard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and

39、if not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, w

40、hich you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).FIG. 1 Electrical Design TestF2715083