1、Designation: F2715 09 (Reapproved 2015)Standard Specification forTemporary Protective Equipotential Bond Mat To Be Usedon De-Energized Equipment1This standard is issued under the fixed designation F2715; the number immediately following the designation indicates the year oforiginal adoption or, in t
2、he case of revision, 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 equi
3、potential bond mat 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 beyo
4、ndthe scope of this 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 Tin-Coated Soft o
5、r Annealed CopperWire for Electrical PurposesD2261 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 Tem
6、perature, Low; Effect on Coated ClothFed 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 Ground
7、ing System, n temporarygrounding 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.
8、 Classification4.1 Equipotential bond mats covered under this specifica-tion shall be designated as Type I or Type II; Style 1 or Style2; Grid Conductor 1 to 24 and Carrier Material I or II.4.1.1 Type I, capable of being cascaded (joined together).4.1.2 Type II, without capability of being cascaded.
9、4.1.3 Style 1, exposed conductor termination.4.1.4 Style 2, jacketed conductor termination.4.1.5 Grid Conductor, 1 to 6, in accordance with the normalflat width, or equivalent, of the flat braid conductors combina-tion that makes up the grid conductor and perimeter conductorof the carrier, as shown
10、in Table 1.4.1.6 Carrier material I, slip resistant.4.1.7 Carrier material II, without slip resistance.5. Ordering Information5.1 Orders for equipotential bond mats under this specifica-tion shall include the ASTM designation and the followinginformation:5.1.1 Quantity,5.1.2 Type,5.1.3 Style,5.1.4 G
11、rid Conductor,5.1.5 Carrier Material,5.1.6 Size, specified in length and width dimensions, notingany specific configuration requirements; rectangular, L shape,rectangular shape with access hole in middle, etc.5.2 The listing of types, styles, grid conductors, carriermaterial and size is not intended
12、 to mean that all shallnecessarily be available from the manufacturers; it signifiesonly that, if made they shall conform to the details of thisspecification.1This specification is under the jurisdiction of ASTM Committee F18 onElectrical Protective Equipment for Workers and is the direct responsibi
13、lity ofSubcommittee F18.45 on Mechanical Apparatus.Current edition approved April 1, 2015. Published May 2015. Originallyappoved in 2008. Last previous edition approved in 2009 as F2715-09. DOI:10.1520/F2715-09R15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM C
14、ustomer Service at 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 States16. Manufacture and Marking6.1 Eac
15、h equipotential bond mat shall be marked clearly andpermanently with the name of the manufacturer or supplier,ASTM F2715, serial number, type, and style.7. Chemical and Physical Requirements7.1 Equipotential bond mats samples selected in accordancewith Section 10 shall conform to the physical and ch
16、emicalrequirements 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 Tear Carrier material shall be capable oftongue tear of 485 516 N (109 116 lbf)
17、in accordance withTest Methods D2261.7.2.3 Cold Flexure Carrier 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 B33 requirements 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 Test The 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 configurat
24、ion 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 connecte
25、d 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 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.TABLE 1 Bond Mat Conductor SizeGridConductorGrid, in. Perimeter, in.114142141231434412125123463434TABLE 2 Flat Braid Minimum SpecificationsNominalBraid Width,mm (in.)NominalThickness,mm (in.)StrandAWGNo. ofStrandsNo. WiresPer Stra
27、nd6.35(14) 0.76(0.03) 36 24 712.7 (12) 0.76(0.03) 36 48 819 (34) 1.0(0.04) 36 48 18FIG. 1 Electrical Design TestF2715 09 (2015)211.1.5 Energize the source conductor at 8 kV and measurethe voltage across or current through, the 1000 resistor. Thevoltage across the resistor can be recorded by a digita
28、loscillograph 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.11.1.7 The voltage across the resistor shall not exceed 5 Vand the current shall not exceed 0.005 amps.11.2 Resistance Test:11
29、.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 the option of the purchaser, a production lot may besubjected to the following:12.2 Visual inspection for workmanship and fi
30、nish 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 to manufacturers design specification in accor-dance with Section 8. Individual equipotential bond mats thatdo not conform
31、 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-to-corner requirements are given in11.2. Individual equipotential bond mats that do not conformshall be rejected.12.6 The
32、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. In case of dissatisfaction with the results of the test, theproducer or supplier may make a claim for a rehearing.12.6.1 R
33、ejection 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 claimfor a rehearing.12.7 If electrical, or mechanical testing, or both, are re-quired by a user prior to acceptance, minimum t
34、esting 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 contract, amanufacturers or suppliers certification shall be furnished tothe purchaser that the equipotential bond mats weremanu
35、factured, sampled, tested and inspected in accordancewith this specification and found to meet the requirements.When specified in the purchase order or contract, a report ofdesign test shall be furnished.14. Packaging and Package Marking14.1 The package shall be marked with the name or logo ofthe ma
36、nufacturer.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 shipment shall be packaged to provide protectionof the contents for the mode of transportation.15. Keywords15.1 bond; equipot
37、ential; matASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such
38、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 andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additio
39、nal standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the A
40、STM 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 ab
41、oveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 09 (2015)3
