HD 251-1975 General Specification for Electric Cooking and Heating Appliances for Household and Similar Purposes《家用和类似用途电动炊具和加热器具的通用规范》.pdf

1、Date of approval :1974-11-26 GENEPAL SPECIFICATION FOR ELECTRIC COOKING MD HEATING APPLIANCES FOR HOUSEHOLD AKD SIMILAR PURPOSES REGLES GENERALES POUR LES APPAREILS ELECTRIQUES DE CUISSON ET DE CHAUFFAGE POUR USAGES DOIESTIQLYS EI AICiLOGUZS ALLGEMEINE BESTIl*DId3!GEN FUI? ELEKTRO$PdEGS?JTE FR DEN H

2、AUSEGEBPAUCH UND AHNLICIIE %ECKE - This Document was prepared by ihe CENELEC Technkxl Committee 61, the final draft of which bore the reference CENELEC/TC 61 (SEC) 1 00, October 1 974 a HD*Z5L 75 W 3404583 00040Zb 2 W -1- fil) 25 1 Narcli 1975, - FOREWORD 1, 2, Gene ra I This llariiioiiization Docum

3、ent hac been prepared by the secretariat of Technical Committee GI in accordance with the decisions taken by TC61 during its iceetiiigs held in October 1972, Decenilier 1973 and September 1974 in Arnhem. _I_- During the last mentioned 2 meetings, the results of the Enquiry Procediire in the member c

4、ountries of tlie previ.ous versions of this docunicnt, CENE1,EC 61 (SEC) 13 of April 1973 aiid CENET,ISC 61 (SEC)lr1/74 of February 1374, were discussed. It was dccidcd to publisli and implement this document as MhRiOLIIZATIO: DOCUhEN in the meniber countries iiidicated on the front page on l!l7r.07

5、.F)1. This was confirmed by the Council during its meeting 1iel.d in November 1974 in Rome. During this meeting the Council decided also that conflicting non-harmonized , national standards should be removed be ore 1 9 77,07. O 1. This Harmonization Document is based on CEE Publication II, Part I, S

6、econd Edition dated April 1964 including Cuppleiiient i and Modification 1 and 2. The reasons for the amendments to this Publication are mentioned in the last column in accordarice with the CENELEC Internal Regulations. Rote: The contents of this Harmonization Document will be re-examined as soon as

7、 new emendments to the relevant IEC Publication have been published. National deviations The following national deviations could not bi? removed: Chapter A: National departures due to the distribution system, viring rules and other regulations outsi.de the competence of the Ratior,al Coimit tees. Ge

8、neral: Compulsory approval of appliances on safety and interference suppression is legally required in Denmark (until 1978.2.19), Finland, Norway, Sweden and Switzerland. In Germany a compulsory approval is applicable for radio interference suppression only. 82b. 29 Denmark (Heavy Current Regulation

9、s I36 A- S33.1.3 note) : Keys to loclcs of lids e.g. cylinder locks and padlocks are not regarded as tools. The standard viiue of the rated single-phase voltage is 220V except for the following countries : 35 Fin 1 and : range 210 - 230V, France : 220V and 127/22OV (bi-tension), Norway : range 220 -

10、 230V, United Kingdom : 240V. 86 87 Austria, Germany, Ire1 and and the Uni.ted Kin,cloin (Wirhg -I-c_ Rules) : Class O and QI. cip?liaxFes ase not allowed. - _.I Germany (Amtsp,cri clitsurtei 1. LI C 495/7 1 of 17 .June 1973) - : If the Leniperature rise of accccsiblc. npplj iincc surfaces, iiicnsur

11、cd according to tlie opcrati.rig conditions of clause 1 I, cxccc:ds GOIiii:(cI i)i-owii ci1311 be tiot OC tiic fi rst-!icriod coricluctoi: and tlie covc).iriy, to be eol.ourc3 blue sill bc that of the oi:licr conductor. - - HD*251 75 3404583 0004029 8 -4- iD 25 i March 1975. . . .I. . United Kingdom

12、 (Wiring Rules): Class I appliances provided With a plug complying with CEE- Publication 7 are not allowed. Therefore such appliances supplied with a flexible cable or cord do not require.to be fitted with a plug. 26c Denmark (Heavy Current Regulations C23 S2308h): The terminal shall be placed in su

13、ch a way that internal wires, during replacement of supply cable or cord, have no possibility of being squeezed or exposed to harmful influence eg. through pull, rwis t or sharp- bendings. Loose terminals and terminals placed on e.g. lids or parts which are movable without the use of a tool after co

14、vers have been removed for replacement of supply cable or cord, are not permitted. This requirement need not to be complied with in case the terminals for supply connection are placed in housings, which are entirely of insulating material or which have insulation between the interior of the housing

15、and accessible metal parts and in which there are no parts which are intended apply to equipment of Class I and Class 01. For equipment of Class O the said insulation shall at least be functional insulation, and for equipment of Class II it shall at least be reinforced insulation. Such insulation sh

16、all also be found in places where cords. or. cables may get jamed, for being connected to earth. This relaxation does not . . . 830a “Denmark (Heavy Current Regulations C23 2316 b and c): External parts of insulating material shall in addition be resistant to fire. Compliance is checked by the follo

17、wing test, which is not made on parts of ceramic material, The insulating parts are subjected to a test made with an electrically heated conical mandrel in an apparatus as shown in figure 9. The mandrel is inserted into a conical hole reamed in the part to be tested in such a way that portions of th

18、e conical part of the mandrel of equal length protrude from both sides. The sample is pressed against the perature of 300OC in approximately 3 minutes and is maintained within IOOC of this value for 2 minutes. The temperature is measured by means of a thermocouple inside the mandrel. During the test

19、, sparks of about G mm in length are produced at the upper surface of the sample where the mandrel protrudes, by means of a high-frequency spark generator. Nei ther the sample, nor any gases produced during the heating, shall be igni tcd by the sparks. . mandrel with a force of 12N. The mandrel is h

20、eated to a tem- . After the conclusion of the test the sample shall not have moved on the mandrel by more than 3 mm. (A longer movement may be accepted where it is considercd reasonable). -5- HD*25L 75 340Y583 0004030 Y W -!i-. IID 251 March 1975. If the material by adaptation to the mandrel is weak

21、ened to suc11 an extent that the movement on the cinndrel during the tcst is likely to be caused by the above-mpntioned wcnkeiiing, the test is repeated iqith a naiidrel with a different diairieter or possibly somewliere else on the matcrial. It may be permitted that thermoplastic material does not

22、pics the hot mandrel test, if the use of said insulating rr,r:terial gives special advantages. Ho.ever, such a pcraission is only obtainable, if the cintcrial does not burn violently as for examp 1 e ce 1 1. u10 i d. 839b Deninark (Heavy Current Regtilations C23 22316 b and c): If insulating parts r

23、etaining live parts in position in additic: are external parts forming the enclosure of the appliance, the prescribed hot mandrel test is replaced by the hot mandrel test mentioned in 30a, but with a tenperature of 500C and with a maxinxim movement on the mandrel of 2 EX. It may be permitt.cd that t

24、hermoplastic rcaterial does not Dass this hot mandrel test if the use of said insUlating metczial gives special technical advantages. fIo!.cever, such a perzission is atily obtainable, if the material is self-extinguishing. The material is deemed to be self-extinguishing, if ttie fol.lowiiig test is

25、 passed: The test is made on 10 samDles, 2nd all se?i:,les shall with- stand the test. Tlie test is mde in still air vit5 the aid of a Bunsen burner, having .an opening of 9 E= and being sucplied from the town gas. Tlie flax of the burner is zdjusted LO ah overall length of 10 crn an-d a. COie lengt

26、h of 5 CE. Tile burner is held at an angle of 45 wich the horizontal. The smple is held in one of the positions which are deesed ta be Kost unfavourable for passing the test (the saire psitior. ceed coc be used or all saInples), 2nd the saimle is placed in this positioii with its loyer end in the ni

27、cidle of the flamc, the distance bctveen the sample and the o;irening of the burner being 3.5 CRI. The flaie is applied Lor 10 seconds. kiiy bririiirig of the sanip1.e shall be quicsceiit 2nd shall not spread appreciably; any f lane shall be self-e:tiiii:ishiD.s within 30 seconds after the! removal

28、of the flame of Che burner. Burning drops, i4 any, which are falling on a horizontal voader? board placed 20 cm below the saqle, shall stop burning as soon as they touch the board. Germany (kndesgcsetzblatt I2 1997 A Nr. IrJO hliafig II, Ai:sj. 25.9.197!): The USC of carbon tetrachloride for carryin

29、g out ttie test is forbidden. don: - Stationary appliance denotes either a fiscd appliance or an appli.niicc Iiaviiig n mass exceeding 18 Irg and not provided wi li a carryj.ng handle. -6 - HD*25L 75 340i-1583 OOOi-1031 b -6- t -. 7 HD 251 March 975. “If the unjointed test finger does not enter, the

30、 force applied is increased to 30N. If then the guard is permanently SO dis placed or the aperture so distorted that tlie test finger shomi in Fig. 1 can be entered without force, the test wi-tli this latter finger is repeated. For appliances other than those of Class II and incorporating a heating

31、element whi.ch glows visibly in normal tise, the test for accessibility of live parts of the heating element and of parts supporting such elements, where it is obvious from the outside of the app.l.iance without removing covers or the like, that such parts are in contact with the heating element, is

32、 made with the test probe instead of the test finger in the following cases : 1. if the appliance is controlled by an all-pole switch and the element cannot bccome live without visibly glowing as the result of the action of a control, or 2. if the appliance is provided with a flexible cord and a plu

33、g and does not incorporate a switch or other control. Germany (additional sub-clause) : “Appliances intented to be connected to the supply by means ot a plug shall be designed so, that in normal use there is no risk of electric shock from charged capacitors. Compliance is checked by the following te

34、st, which is nade 10 times. The appliance is operated at rated voltage or at the upper limit of the rated,voltage range. The appliance switch, if any, is then moved to the “OFF“- position and the appliance is disconnected from the siipply by means of the plug. One second after disconnection, the vol

35、tage between the pins of the plug is measured with an instrument which does riot appreciably affect the value to be measured. This voltage shall not exceed 3417. Capacitors having a rated capacity not exceeding O.l/uF are not considered to entail a risk of electric shock. A revision of this sub-clau

36、se is under consideration. . 81 la Germany : Add iii the table after the lampholder: “Lampholders marked with a T . T25“. 822 Germany (Additional sub-clause): Appliances and their accessories shall have no sharp edges, burrs and the like, which could cause injury. Compliance is checked by inspection

37、 and testing. United Kingdom: Replace this sub-cl.tue by the foflowiiig: If there is a relative moveriient between two parts of an appliance in normal use or during user servicing and them are electrical connections, including the connections for the carthi.ng circuit, between thcse parts, the const

38、ruction shall be suclt that the conductors and their connections are not cubjectxd to iinduc stress. If flexj,ble mctallic tubes are used for tlie protcction of conductors, such tubes shall not cause damage to the insul.ation of: thcse conductors, Open-coi 1 spri-.gs shall not bc uscd to protect con

39、ductors. If a coiled spring, -II g23d II -7- I 111) 251 HD*25L 75 W 3404583 0004032 8 March 1975, ttic txiriis of which touch one anotlier, is used for this purpose, an adccluotc! iiisul.nt;.tig liniiig shall be provided i.ii addi tion to tlic unctional insulation of the conductors. Complinncc is ch

40、ecked by inspection aiid thc fo1I.owing tes t. If flexing occurs iii normal use, the appliance is placed in the normal position of use and is operated at rated voltage or at the upper liiiiit of the rated voltage range, under conditioas of ilornicil load. If flcxing occctss during user servicing, th

41、e appliance is p3 aced in the position necessary for that servicing and is not connected to the supp3.y. The movable part, is moved back ward. and forwards, sotlint the connectj.on is moved through the largest angle permitted by the design, the rate o flexiRg being 30 per minute. llie niiriiber of f

42、 lexiiigs for connect.io:;c flexed in normal use is 10.000, For connections flexed during user servicing, a test is given in Part 2“. Add the following paragi:aph and explanation: The appl.iance shall reniain safe within tile neaning of this specification and shall slio no damage impairing its furth

43、er use; the test of clause i6 shall be repeated except that the voltage applied between live parts atid non-current-carrying parts shal-1 be reduced to 100OV. A flexing is one rovcnent either backwards or forwards. Tlie sheath of a flexible cable or cord covered hy IEC PuSlication 227 and 245 is reg

44、arded as- an adequate insulating liniiig“. Il - Irelazid and United Kingdom:, Cable sizes 1.25 rml is permitted for current; ajove 10 up to -ILIIU- 825d 13. SA, -. HD*25L 75 m 3404583 0004033 T m . -=* - 8- HD 251 Nu rctr ! 975. EN DO IG EMIS NT NOT I CE - . CEE Publication 11, Part 1, Second Editio

45、n dated April 1364, including Spplemznt 1 and Nodifications 1 and 2 applies, except for the folloving amendiiients: AMEN DMX NT Replace this sub-clause by the fllo;.iing Components necessary to give an adeqiiatc degree of radic and television interferer ce supprc-ssion shall not reduce the levej of

46、safety of the appliance. Compliance i: checked by carrying out the tests of this specification. Note: Pending further legal regulations for radio and television interference suppression, CISPK methods ancl limits or niore stringent national limits are applicable. “ II Add the folloring explanation:

47、cons i de r a t i oil I. A revision of this sub-clause is under tt Replace in the third sentence of the test specification the figure of 90 , speci- fied for the bend of the cable or cord, by 60“. Add the foilowing explanation: “In general a surface having a curvature with a radius of at least 1.5 m

48、n i.s con- sidercd tk be well-rounded“. Delete the following sentence from the cxplan.ation : “Other tests niay be necessary“. Dclcte the test specification, -I_- Replace this sub-clause by the fo;llowing: internal wiriiie. Coii.ip1.imcc with the rcquircr,w.nts of sub-clauses E to li is checked by i

49、iinpectioii. Note: %hc proliibi ti on of al.wiini;im wj.res is provisional arid is valid until suitatllc. tcsi:s LO ciicck corrosion recis- t: an ce nid s 11 f i i. ci ci1 t c.on 1: act: p rcs s u re are spcci Ki.cCi“. 1.3uriii.niiiin wires sliall not be used for Il REASQN Rules for radio and television interference suppression should be given in a separate specifi- cat i on. Harmonization of the rules for radio and television interf ersnce suppression has not yet been completed. - If creepage distances and