ASTM F1564-1995(2006) Standard Specification for Structure-Mounted Insulating Work Platforms for Electrical Workers《电工用结构安装绝缘工作台标准规范》.pdf

1、Designation: F 1564 95 (Reapproved 2006)Standard Specification forStructure-Mounted Insulating Work Platforms for ElectricalWorkers1This standard is issued under the fixed designation F 1564; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r

2、evision, the year of last revision. A number in parentheses 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 the design testing of mechani-cal and electrical characteristics of st

3、ructure-mounted insulat-ing work platforms used by electrical workers.1.2 Platforms covered by this specification are singleworkerplatforms not exceeding 9 ft (2.75 m) in length. Platformsdesigned to support more than one worker at a time are beyondthe scope of this specification.1.3 Non-insulating

4、platforms are not within the scope of thisspecification.1.4 The use and maintenance of this equipment are beyondthe scope of this specification.1.5 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are forinformation only.1.6 The following saf

5、ety hazards caveat pertains only to thetest method portion, Section 9 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 a

6、nd determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2F711 Specification for Fiberglass-Reinforced Plastic (FRP)Rod and Tube Used in Live Line ToolsF 819 Terminology Relating to Electrical Protective Equip-ment for Workers3. Terminology3.1

7、Definitions:3.1.1 Refer to Definitions F 819 for definitions of termsspecific to this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 design testa type of test made on a sample treated asrepresentative of an industrial product. These tests will not berepeated in quantity produ

8、ction.3.2.2 discontinuitiesabrupt changes in surface that maytrip an electrical worker or otherwise introduce a hazard to theworker (see 8.1).3.2.3 insulating distancethe distance from the structureattachment point to the beginning of the work area of theplatform.4. Significance and Use4.1 Insulatin

9、g work platforms covered by this specificationare designed to be used by electrical workers in conjunctionwith personal protective equipment while working on ener-gized circuits. This shall include, but not be limited to:4.1.1 Insulating gloves with protectors or insulating andinsulated hotsticks, o

10、r both.4.1.2 A fall protection device that does not compromise theelectrical insulating protection of the platform.4.2 The test procedures in this specification provide anobjective means of determining if a platform meets minimumelectrical and mechanical specifications. The methods permittesting of

11、major components of the platform under controlledconditions.4.3 The test procedures utilize objective criteria for evalu-ation and may be discontinued at any time defects are found.5. Ordering Information5.1 Orders for platforms under this specification shouldinclude the following information:5.1.1

12、Length,5.1.2 Pivot or non-pivot attachment, and5.1.3 Single-point or rail-type attachment for worker.1This specification is under the jurisdiction of ASTM Committee F18 onElectrical Protective Equipment for Workers and is the direct responsibility ofSubcommittee F18.35 on Tools the surface between e

13、lectrodes does not increase in tempera-ture; and when using ground return metering, the maximumleakage current is less than 100 a at 100-kV ac.9.1.1.2 The electrodes shall be two spiral springs,58 to 1-in. (15.6 to 25-mm) diameter. Wind each spring of spring steelwire, 40 6 5 thousandths in. (1 mm)

14、in diameter. Wrap thesprings around the platform board so spring contact is main-tained on the entire surface. When applied across the testspecimen, the distance between individual coils of a springshall be less than 0.25 in. (0.64 cm).9.1.1.3 Attach the test leads to the springs making sure allshar

15、p edges remain inside the springs. Use high-voltage cablesuch as metal conductor spark plug wire for the power lead andFIG. 1 Platform RequirementsF 1564 95 (2006)2use shielded cable, similar to RG-58, for the ground lead.Attach the inner conductor of the shielded cable to the groundspring and to th

16、e ground return meter of the metering circuit.Strip back 2 in. (5.08 cm) of the shield and float the shield onthe spring end. Attach the shield to the ground lug on the testset.NOTE 2Use a true RMS meter with a crest factor of seven or greater.9.1.1.4 Apply potential to the test segment. Increase th

17、evoltage gradually (less than or equal to 10 kV per second) to100 kV and maintain for 5 min. Read the maximum leakagecurrent indicated by the ground return meter. A leakage inexcess of 100 a at 100-kV ac signifies a failure. The platformboard shall be rejected for a failure of any test segment.9.1.2

18、 The nonskid finish areas (see 6.2) of the platform shallwithstand a proof test ac voltage of 30 kV per foot (30.48 cm)for 5 min.9.1.3 An acceptable dielectric test setup is illustrated in Fig.2.9.2 Mechanical Test:9.2.1 Test each platform design mechanically in accordancewith the following subsecti

19、ons.9.2.1.1 Install the platform and its associated mountinghardware on a rigid test structure allowing the measurement ofthe deflection of the platform under controlled loading. Ifsupport or brace poles are used, set them at the limit ofacceptable angles that will apply the maximum stress to thepiv

20、ot point and attachments.9.2.1.2 Attach the load to the platform at a point 2 in. (5.08cm) from the outer end and distributed over an area not toexceed 30 in.2(193.56 cm2). Increase the load in pounds at amaximum rate of 1000 lb (453.60 kg) per minute until theworking load of the device is reached.

21、At working load,deflection shall not exceed 1 in. (2.54 cm) per foot (30.48 cm)of overall length, with a maximum deflection of 4 in. (10.16cm).9.2.1.3 After recording the data at working load, the load onthe same platform shall be increased to two and one half (2.5)times working load at the same rat

22、e and held for 5 min. Theplatform shall withstand this loading without visible damagesuch as cracks, delamination, permanent deformation, or dis-coloration.9.2.1.4 The platform shall withstand two and one half (2.5)times working load at all brace pole angles and pivotalmounting angles without visibl

23、e damage such as cracks,delamination, permanent deformation, or discoloration.9.2.1.5 A worker positioning device and its attachment tothe platform shall withstand a static load test of 500 lb (226.8kg) in any direction without visible signs of damage.10. Inspection and Certification10.1 Each platfo

24、rm manufactured and inspected under thisspecification shall also be inspected for workmanship andquality by the supplier.10.2 When specified in the purchase order or contract, aproducers or suppliers certification shall be furnished to thepurchaser certifying that the product by specific serial numb

25、erhas been manufactured in accordance with this specificationand has been found to meet the requirements.FIG. 2 Insulating Segment of PlatformF 1564 95 (2006)3ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this stand

26、ard. Users of this standard 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 review

27、ed every five years andif 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

28、 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 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).F 1564 95 (2006)4