1、C310-09Distribution class polymeric cutoutsLegal Notice for StandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing varied viewpoints and
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15、copies of this document in print or paper form may be distributed only to persons who are authorized by CSA to have such copies, and only if this Legal Notice appears on each such copy.In addition, users may not and may not permit others to.alter this document in any way or remove this Legal Notice
16、from the attached standard;.sell this document without authorization from CSA; or.make an electronic copy of this document.If you do not agree with any of the terms and conditions contained in this Legal Notice, you may not load or use this document or make any copies of the contents hereof, and if
17、you do make such copies, you are required to destroy them immediately. Use of this document constitutes your acceptance of the terms and conditions of this Legal Notice.Update No. 2CAN/CSA-C310-09September 2012Note: For information about the Standards Update Service or if you are missing any updates
18、, go to shop.csa.ca or e-mail techsupportcsagroup.org.Title: Distribution class polymeric cutouts originally published November 2009Revisions issued: Update No. 1 April 2010The following revisions have been formally approved and are marked by the symbol delta () in the margin on the attached replace
19、ment pages:Revised Clauses 2, 6.1, 6.2, 7.2.3.3, 7.2.3.4.1, 7.2.3.4.2, 7.4.2.2, 7.8, 8.2, 9.1, 9.4 and D.1New Clauses 8.3.1 and 8.3.2Deleted None Update your copy by inserting these revised pages.Keep the pages you remove for reference. 2012 CSA Group Distribution class polymeric cutoutsSeptember 20
20、12C310-09Distribution class polymeric cutouts1 Scope1.1 This Standard applies to open-type (fused and solid-blade) cutouts with a polymeric insulator structure component. These cutouts are intended for operation on alternating current distribution systems.1.2 In some cases, specific types of constru
21、ction are envisaged. This does not preclude the use of other types of construction, provided that the engineering representatives involved can demonstrate the safety and suitability of these alternatives.1.3 In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user
22、is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include require
23、ments or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or
24、informative (non-mandatory) to define their application.1.4 The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.2 Reference publicationsThis Standard refers to the following publications, and
25、where such reference is made, it shall be to the edition listed below.CSA (Canadian Standards Association)C57-98 (R2006)Electric power connectors for use in overhead line conductorsCAN/CSA-C411.1-M89 (R2009)AC suspension insulatorsCAN/CSA-C411.4-98 (R2008)Composite suspension insulators for transmis
26、sion applicationsC411.6 (under development)Line post composite insulatorsCAN/CSA-ISO 9001-08Quality management systems Requirements1(Replaces p. 1, November 2009)C310-09 2012 CSA GroupSeptember 2012CAN/CSA-Z234.4-89 (R2007)All-numeric dates and times/Reprsentation numrique de la date et de lheureANS
27、I (American National Standards Institute)C37.42-2009Specification for High-Voltage Expulsion Type Distribution Class Fuses, Cutouts, Fuse Disconnecting Switches and Fuse LinksASTM International (American Society for Testing and Materials)Annual Book of ASTM Standards, Volume 11.01 WaterA153/A153M-09
28、Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel HardwareD2240-05Standard Test Method for Rubber Property Durometer HardnessD2565-99 (2008)Standard Practice for Xenon-Arc Exposure of Plastics Intended for Outdoor ApplicationsE1417-05e1Standard Practice for Liquid Penetrant Testing
29、G154-06Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic MaterialsG155-05aStandard Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic MaterialsIEC (International Electrotechnical Commission)60060-1 (2010)High-voltage test techniques
30、 Part 1: General definitions and test requirements60282-2 (2008)High-voltage fuses Part 2: Expulsion fuses60695-11-10 (2003)Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methodsIEC/TS 60815-1 (2008)Selection and dimensioning of high-voltage insulators intended f
31、or use in polluted conditions Part 1: Definitions, information and general principlesIEC/TS 60815-3 (2008)Selection and dimensioning of high-voltage insulators intended for use in polluted conditions Part 3: Polymer insulators for a.c. systems62217 (2005)Polymeric insulators for indoor and outdoor u
32、se with a nominal voltage 1000 V General definitions, test methods and acceptance criteria(Replaces p. 2, November 2009)2 2012 CSA Group Distribution class polymeric cutoutsSeptember 20125.2 Upper-contact supportThe upper-contact support shall have hooks to permit the use of a load-break tool and sh
33、all incorporate a positive-engaging arrangement to retain the fuse holder in the closed position while the fuse link or solid blade is intact. The upper-contact support shall permit opening of the cutout by means of a standard switch stick engaging the pull ring of the fuse holder and shall release
34、the fuse holder upon operation of the fuse.5.3 Lower hingeThe lower hinge of the cutout shall be of such design that the fuse holder, when fused, can be guided, accurately and without binding, into the latched-closed position by means of a disconnect stick held at any practical angle and without the
35、 need for visual observation.5.4 InterchangeabilityFuse holders and solid blades of the same voltage class from one manufacturer should be electrically and mechanically interchangeable with fuse holders and solid blades from another manufacturer (see Annex A). The fuse holder or solid blade shall ha
36、ve a lifting eye to facilitate removal and replacement with a switch stick.5.5 Insulator to fittings interfaceThe interface between the cutout fittings (i.e., centre mounting bracket, upper-contact support, and lower-contact support) and the insulator shall be sealed to prevent any moisture ingress
37、into the cutout body.5.6 Closing-in forceThe action of closing-in the cutout shall not impose any dynamic force large enough to break a fuse link. The maximum closing-in force shall be 1 kN (225 lbf).5.7 ConnectorsConnectors and hardware shall meet the(a) electrical requirements of duty class D, spe
38、cified in CSA C57; and(b) mechanical requirements of Class 3, specified in CSA C57.Connector-tightening nuts or bolts shall be captive.5.8 Galvanized partsGalvanized parts shall be hot-dipped in accordance with ASTM A153/A153M.6 Electrical characteristics6.1 E lectrical ratingsThe rated maximum volt
39、age, continuous current, symmetrical-interrupting current, short-time current, and basic impulse insulation level (BIL) of cutouts shall be as specified in Table 2 of ANSI C37.42. Cutoutsmay have a single-voltage rating or a slant-voltage rating.6.2 Pe rformance characteristicsWhen tested in accorda
40、nce with Clause 8, the normal-frequency dry and wet withstand voltages shall beas specified in Table 4 of ANSI C37.42 and the radio-influence voltage (RIV) shall be as specified in Table 1.5(Replaces p. 5, November 2009)C310-09 2012 CSA GroupSeptember 20127 Design tests7.1 GeneralThe design tests sp
41、ecified in Clauses 7.2 to 7.9 are intended to verify the suitability of the design, materials, and method of manufacture of the cutout body. Cutout bodies of the same design have the following characteristics:(a) the same housing and core materials;(b) the same manufacturing method; and(c) the same
42、material, design, and method of attachment for all fittings.Design tests need only be performed once unless structural, dimensional, or manufacturing process changes are incorporated into an existing polymeric cutout design.Note: The design tests specified in Clauses 7.2 to 7.7 are adapted from CAN/
43、CSA-C411.4 and IEC 62217.7.2 Water penetration test7.2.1 SamplesThree cutout body samples that include all the components of the insulator shall be selected for this test. An additional cutout body shall be set aside for the power frequency voltage measurement (see Clause 7.2.3.4).7.2.2 ProcedureThe
44、 test procedure shall be as follows:(a) The hardness of the samples shall be measured in accordance with ASTM D2240.(b) Each sample shall be boiled for 100 h in water having 0.1% by weight of sodium chloride (NaCl).(c) At the end of the boiling process, each sample shall be allowed to remain in the
45、water until the water cools to 50 C (122F). The water shall be maintained at this temperature until the samples are evaluated (see Clause 7.2.3).(d) Samples shall be rinsed with deionized water prior to the evaluation specified in Clause 7.2.3.(e) The evaluation specified in Clause 7.2.3 shall be co
46、mpleted within 48 h of the samples being removed from the water tank.7.2.3 Evaluation7.2.3.1 Visual examinationEach sample shall be visually inspected. There shall be no cracks and no signs of dissolving or crumbling.7.2.3.2 HardnessThe hardness of the samples shall(a) be measured in accordance with
47、 ASTM D2240, at a temperature that is within 5 C (9F) of the temperature in which the pre-boiling measurements were taken see Clause 7.2.2(a); and(b) not change from the pre-boiled sample by more than 20%.7.2.3.3 Steep-front impulse voltageEach sample shall be subjected to a steep-front impulse of a
48、t least 1000 kV/s, in accordance with Clause 7.2.7 of IEEE Std 4. The cutout shall be mounted on a crossarm simulating in-service conditions with the fuse tube in place. The test voltage shall be applied between the mounting pin and the two line terminals simultaneously (line terminals connected tog
49、ether). Each sample shall be subjected to 10 positive impulses and 10 negative impulses. Each impulse shall cause an external flashover.(Replaces p. 6, November 2009)6 2012 CSA Group Distribution class polymeric cutoutsSeptember 20127.2.3.4 Power frequency voltage7.2.3.4.1 ProcedureThe procedure for measuring power frequency voltage shall be as follows:(a) Before the flashover test begins, the temperature of the housing between the sheds of all samples shall be determined and noted as the reference temperature. The dry power frequency vo
