【AS澳大利亚标准】AS 1194-5-1996 Winding wires Part 5 Test methods.doc

as/nzs 1194.5:1996accessed by university of south australia on 30 nov 2006australian/new zealand standardwinding wirespart 5: test methodsthe standard is downloaded from standard sharingas /nzs 1194.5:1996this joint australi an/new zealand s tandard was prepared by joint technical committee el /3, el ectric w ires and cables. it was approved on behalf of the council of st andards australia on 21 february 1996 and on behalf of the council of s tandards new zealand on 15 may 1996. it was published on 5 september 1996.the foll owing interests are represented on commit tee el/ 3: australi an electrical and electronic manufacturers associationdepartment of defence, australi ael ectrical regulatory authoriti esel ectricit y supply associati on of australi aministry of commerce, new zealandnew zealand el ectrical contractors associationnew zealand el ectrical and el ectronic manufacturers federati onoffice of energy, n.s.w .railways of australia commit teetesti ng interestsreview of st and ards. to keep abreast of progress in industry, joint australi an/ new zealand st andards are subject to periodic review and are kept up to date by the issue of amendments or new edit ions as necessary. it is important therefore that st andards users ensure that they are in possession of the latest editi on, and any amendments thereto.accessed by university of south australia on 30 nov 2006full details of all joint s tandards and related publications will be found in the st andards australia and st andards new zealand catalogue of publi cations; this information is supplemented each month by the magazines the australi an st andard and s tandards new zealand, which subscribing members receive, and which give details of new publicati ons, new editions and amendments, and of withdrawn st andards.suggesti ons for improvements to joint st andards, addressed to the head office of either st andards australia or s tandards new zealand, are welcomed. noti fication of any inaccuracy or ambiguity found in a joint australian/new zealand s tandard should be made without delay in order that the matter may be investigated and appropriate action taken.this standard was issued in draft form for comment as dr 95147.as/nzs 1194.5:1996australian/new zealand standardwinding wirespart 5: test methodspubli shed jointl y by: standards austral ia1 the crescen t,homeb ush nsw 2140 australiaaccessed by university of south australia on 30 nov 2006standards new zealand le vel 10, stan dar ds hou se,15 5 th e te rra ce,we lli ngt on 600 1 new zeal an dis bn 0 7337 0452 23as/n zs 1194.5: 1996the standard is downloaded from standard sharingprefacethis standard w as prepared by the joint standards a ustralia/standards n ew zealand committee el/3 on electric wires and cables, to supersede in part a s 1194.1 1984, as 1194.2 1983,as 1194.3 1984 and as 1194.4 1985,nz s/as 1194.1 1984, nz s/as 1194.2 1983, n zs/as 1194.3 1984 and nz s/as 1194.4 1985.this standard is part of a series, the other parts being: as /nz s1194winding w ires1194.1enamelled round copper w inding wires1194.2enamelled rectangular copper winding w ires1194.3enamelled round aluminium w inding w ires1194.4enamelled rectangular aluminium w inding w iresthis part 5 of the standard stipulates the test methods applicable to round and rectangular wires of both copper and aluminium enamelled material and parts 1, 2, 3 and 4 specify dimensions and material requirements for each of these four conductors .in preparation of this standard, consideration was given to iec 851 parts 1 to 6* and acknow ledgment is made of the assistance received fr om those sources.the term s normative and informative have been used in this standard to define the application of the appendix to which they apply. a norm ative appendix is an integral part of a standard, whereas an informative appendix is only for inform ation and guidance.* iec 851methods of test for wi nding w irespart 1: g eneralpart 2: d etermi nation of dimensionspart 3: m echanical properties part 4: c hemi cal properties part 5: electrical properties part 6: thermal properties copyrightstandards australia / standards new zealandusers of standards are reminded that copyright subsists in all standards australia and standards new zealand publications and software. except where the copyright act allows and except where provided for below no publications or software produced by standards australia or standards new zealand may be reproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in writing from standards australia or standards new zealand. permission may be conditional on an appropriate royalty payment. australian requests for permission and information on commercial software royalties should be directed to the head office of standards australia. new zealand requests should be directed to standards new zealand.up to 10 percent of the technical content pages of a standard may be copied for use exclusively in-house by purchasers of thestandard without payment of a royalty or advice to standards australia or standards new zealand.inclusion of copyright material in computer software programs is also permitted without royalty payment provided such programs are used exclusively in-house by the creators of the programs.care should be taken to ensure that material used is from the current edition of the standard and that it is updated whenever the standard is amended or revised. the number and date of the standard should therefore be clearly identified.accessed by university of south australia on 30 nov 2006the use of material in print form or in computer software programs to be used commercially, with or without payment, or in commercial contracts is subject to the payment of a royalty. this policy may be varied by standards australia or standards new zealand at any time.contentspageaccessed by university of south australia on 30 nov 2006sectio n 1 scope a nd ge n era l1.1sco pe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.2referenced d o cumen ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4sectio n 2 tests2.1ge n era l test con di tio n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52.2di men sio ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.3electrical resis ta n ce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62.4elo ng a tion an d ten sile streng th . . . . . . . . . . . . . . . . . . . . . . 82.5sp rin g in ess . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.6break d ow n v ol tag e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112.7con tin ui ty o f cov erin g for rou n d wires . . . . . . . . . . . . . . .202.8flexi bility a nd a d he sio n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232.9he a t sho ck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282.10un idi rectio na l scrape test fo r rou n d wires . . . . . . . . . . . .282.11cut-th roug h test fo r rou nd wi res . . . . . . . . . . . . . . . . . . . . . 292.12resis tan ce to so lv ent s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .322.13th erma l en du ran ce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .332.14resis tan ce to refrige ran ts fo r rou n d wires . . . . . . . . . . . .342.15so lde rability o f rou nd copper wires . . . . . . . . . . . . . . . . . . . 362.16he a t bon d in g test for roun d wires . . . . . . . . . . . . . . . . . . . . 38ap pendicesaen a mel remo va l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41brou nd ing o f corne rs sample preparat ion . . . . . . . . . . . . . . .41cpen cil ha rdn ess . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42or iginated i n austra li a as par t of as c21 1926.or iginated i n new zealand in par t as nzs/ as 1194.1 1984, nzs/a s 1194.2 1983, nzs/a s 1194.3 1984 andnzs/a s 1194.4 1985.pr evious austr alian editi ons as 1194.1 1984, as 1194.2 1983, as 1194.3 1984 and as 1194.4 1985 i n part .jointl y r evised, amalgamated and re designated i n par t as as/n zs 1194.5:1996.29as/n zs 1194.5: 1996the standard is downloaded from standard sharingstandards australia/standards new zealandaustralian/new zealand standardwinding wirespart 5: test methodss e c t i o n1s c o p ea n dg e n e r a l1.1sco pethis standard specifies the test methods for round and rectangular, copper and aluminium enamelled w inding wires in a s/n zs 1194 parts 1 to 4, where relevant.1.2r eferen ced d ocu mentsthe following documents are referred to in thisstandard:as /nz s1194winding w ires1194.1part 1: enamelled round copper w inding wires1194.2part 2: enamelled rectangular copper winding w ires1194.3part 3: enamelled round aluminium w inding w ires1194.4part 4: enamelled rectangular aluminium w inding w iresiec172test procedure for the determination of the temperature index of enamelled winding wirescgbs53-gp -14bstandard for sharpener, pencilaccessed by university of south australia on 30 nov 200653-gp -27mstandard for pencil, drawing, blackcopyri ghts e c t i o n2t e s t s2.1genera l test c on di tion sunless otherw ise specified, all tests shall be carried out w ithin a range of 15c to 35c and a relative humidity of 45 percent to75 percent. before measurements are made, the specimens shall be preconditioned under these atmospheric conditions for a period of at least 30 min.the specimen shall be removed fr om the packaging in such a way that it will not be subjected to tensions or to unnecessary bends. before each test, discard suff icient wire to ensure that any damaged wire is not included in the specimens.note: s ome terms used in rectangular winding wire tests are il lustrated in f igure d im ens ion s2.2.1measuring equipmentthe equipment used shall have an accuracy better than2m. if a micrometer is used, it shall be ensured that the measuring force is w ithin the range given in table 2.1. the diameter range of the spindle and anvil is also given in table 2.1.table2.1spind le/an v il di am eter s an d measur in g for cestype of w inding wi renominal conductor diameter mmspindle and anvil diameter mmmeasuring forcenenamelled round wi re0.1002 - 80.1 - 1.00.1005 - 81 - 8accessed by university of south australia on 30 nov 2006enamelled rectangular w ire5 - 84 - 102.2.2overall diameter of round w irethree measurements of the overall diameter of wire shall be made at successive 60-degree angular displacements at each of two places1 m apart on a specimen.the average of the six results so obtained shall be the overall diameter of w ire.2.2.3condu ctor diameter of round w ireat each of two places 1 m apart on a specimen the enamel shall be completely removed for a length sufficient to enable measurements of conductor diameter to be made.the method used for enamel removal shall have no deleterious effect on the conductor.note: recommended methods are described in appendix a.at each of these two places, three measurements of conductor diameter shall be made at successive 60-degree angular displacements.the average of the six results so obtained shall be the conductor diameter.2.2.4increase in diameter of round cond uctor due to enamel or enamel plus bond layer the diff erence between the overall diameter of w ire as obtained from the method described in clause 2.2.2, and the conductor diameter as obtained fr om the method described in clause 2.2.3, shall be the increase in diameter due to enamel or enamel plus bond layer.2.2.5out-of- roundn ess of round condu ctor (nominal cond uctor diameters not less th an 0.071 mm)the greatest difference between any two of the three measurements of conductor diameter obtained at each of the two places described in clause 2.2.3 above shall be the out-of-roundness of the conductor.2.2.6overall dimensions of th e rectangular wirethe overall w idth and the overall thickness of the wire shall be measured at three positions not less than 100 mm apart. the measurements shall be made on completely straight parts of the specimen.the mean values of the results for each dimension shall be reported as the overall w idth and overall thickness.2.2.7condu ctor dimensions of th e rectangular w irethe insulation shall be removed at the three positions used for measurements in clause 2.2.6 by any method w hich does not damage the conductor and the conductors shall be measured at these positions.the mean value of the results for each dimension shall be reported as conductor w idth and conductor thickness.2.2.8round ing of corners of the rectangular w irethe corner radii of conductors shall be measured by optical means at a convenient magnification carr ied out on w ire samples prepared in a manner that presents an undistorted, polished cross-section of the conductor.the measurements shall be carried out on at least three samples, all cut fr om the same length of w ire, and from positions not less than 200 mm apart.note: a suitable method for the preparation of wire samples is given in appendix b.2.3elec trica l resistan ce2.3.1procedu rethe d.c. resistance of the specimen shall be measured at 20c and expressed in ohms. the method used shall be accurate to w ithin 0.5 percent.if the d.c. resistance of the specimen is measured at a temperature other than 20c then the d.c. resistance at 20c shall be determ ined as follows :rtwherer201(t20)the standard is downloaded from standard sharingr20 = the d.c. resistance of the specimen at 20c, in ohmsrt = the d.c. resistance of the specimen when measured at a temperature (t), in ohms= the temperature coeff icient of the conductor materials for copper, taken as3.96 10 3 k 1 or for aluminium, taken as 4.03 10 3 k 1, for temperature range 15c to 25ct= the actual temperature at w hich the d.c. resistance of the specimen is measured to obtain r t, in degrees celsius.as an alternative, electronic equipment w hich automatically corrects temperature to a base of 20c is perm itted, provided the electronics emulate the calculation specified above.accessed by university of south australia on 30 nov 20062.3.2nu mber of test sone measurement shall be made.accessed by university of south australia on 30 nov 2006fi gure 2.1definiti on of terms used in rectangular wi nding wire teststhe standard is downloaded from standard sharing2.4elon ga tion a nd ten sile strength2.4.1procedu rethe elongation shall be measured w ith an elongation tester or a tensile testing-machine. the tensile strength, if required, shall be measured w ith a tensile testing machine. the free measuring length, i.e. the specimen between the jaws before tension is applied, shall be 200 mm to 250 mm.the specimen shall be stretched at a rate of 4 mm/s to 5 mm/s for copper specimens or2 mm/s to 2.5 mm/s for aluminium specimens until fr acture occurs. the amount by which the length of the specimen between the jaws exceeds the fr ee measuring length shall be determined, and shall be calculated as a percentage of the fr ee measuring length. the force at w hich fracture occurs divided by the cross-s ectional area shall be the tensile strength.cauti on: the object of this te s t is to det ermine the p rop ert ie s of the conduct or and sh ould not be conf us ed w it h s imilar te s ts to dete rmine enamel character ist ics .2.4.2nu mber of testsa total of three tests shall be made but where fracture occurs within 6 mm of a jaw the tests shall be considered invalid and shall be repeated.the average of the three percentage elongations so obtained shall be the elongation. the average of the three tensile tests shall be the tensile strength.2.5spr ing iness2.5.1for roun d copper wires of nominal condu ctor diameters 0.050 mm to 1.60 mmprinciplea specimen is wound five times around a mandrel having a diameter and under a tension specified in a s/n zs 1194.1. the am