BS EN 60682-1994 Method for measuring the pinch temperature of quartz-tungsten-halogen lamps《石英卤钨灯灯夹温度测量方法》.pdf

1、BRITISH STANDARD BS EN 60682:1994 IEC 682:1980 Implementing Amendment No. 1, not published separately Method for Measuring the pinch temperature of quartz-tungsten- halogen lamps The European Standard EN 60682:1993 has the status of a British Standard ICS 29.140.20BSEN60682:1994 This British Standar

2、d, having been prepared under the direction of the Electrical Illumination Standards Policy Committee, was published underthe authority of the StandardsBoardand comes intoeffect on 15 April 1994 BSI 05-1999 The following BSI references relate to the work on this standard: Committee reference LGL/6 D

3、raft for comment 76/29474 DC ISBN 0 580 23019 8 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Italy Belgium Luxembourg

4、 Denmark Netherlands Finland Norway France Portugal Germany Spain Greece Sweden Iceland Switzerland Ireland United Kingdom Amendments issued since publication Amd. No. Date Comments 9778 January 1998 Indicated by a sideline in the marginBSEN60682:1994 BSI05-1999 i Contents Page Cooperating organizat

5、ions Inside front cover National foreword ii Foreword 2 Text of EN 60682 3 National annex NA (informative) Committees responsible Inside back coverBSEN60682:1994 ii BSI05-1999 National foreword This British Standard has been prepared under the direction of the Electrical Illuminations Standards Poli

6、cy Committee and is the English language version of EN60682:1993 Standard method of measuring the pinch temperature of quartz-tungsten-halogen lamps, including amendment A1, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC682:1980 and its A

7、mendments1:1987 and2:1997, published by the International Electrotechnical Commission (IEC), which have the same title as the European Standard. BS EN60682:1994 supersedes BS6274:1982 which is withdrawn. A British Standard does not purport to include all the necessary provisions of a contract. Users

8、 of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 12, an inside

9、 back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60682 November 1993 + A2 July 1997 UDC 621.326.78:66

10、6.192:621.3.032.532:536.532:621.362.1 ICS 17.200.01; 29.140.20 Descriptors: Lighting equipment, electric lamp, tungsten lamp, halogen lamp, temperature measurement English version Standard method of measuring the pinch temperature of quartz-tungsten-halogen lamps (includes amendment A2:1997) (IEC 68

11、2:1980 + A1:1987 + A2:1997) Mthode normale pour la mesure de la temprature au pincement des lampes tungstne-halogne-quartz (inclutlamendement A2:1997) (CEI 682:1980 + A1:1987 + A2:1997) Standardverfahren zur Messung der Quetschungstemperatur von Halogenglhlampen in Quarzglasausfhrung (enthlt nderung

12、 A2:1997) (IEC 682:1980 + A1:1987 + A2:1997) This European Standard was approved by CENELEC on1993-09-22. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alter

13、ation. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by tr

14、anslation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ire

15、land, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart

16、 35, B-1050 Brussels 1993 Copyright reserved to CENELEC members Ref. No. EN60682:1993 + A2:1997 EEN60682:1993 BSI05-1999 2 Foreword The CENELEC questionnaire procedure, performed for finding out whether or not the International Standard IEC682:1980 and its amendment 1:1987 could be accepted without

17、textual changes, has shown that no common modifications were necessary for the acceptance as a European Standard. The reference document was submitted to the CENELEC members for formal vote and was approved by CENELEC asEN 60682 on22September1993. The following dates were fixed: Foreword to amendmen

18、t A2 The text of document 34A/705/FDIS, future amendment 2 to IEC60682:1980, prepared by SC34A, Lamps, of IEC TC 34, Lamps and related equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A2 to EN60682:1993 on1997-07-01. The following dates were fixed: C

19、ontents Page Foreword 2 1 Scope 3 2 Definitions 3 3 Lamp preparation 3 4 Thermocouples 3 5 Temperature measurement 4 6 Result 4 Figure 1 Lamp preparation diagram Method 1 5 Figure 2 Lamp preparation diagram Method 2 6 Figure 3 Attachment of the thermocoupleonlamps with bases G6.35, GX6.35 or GY6.35

20、Method 1 7 Figure 4 Attachment of the thermocouple on lamps with caps R7s or Fa4 Method 1 8 Figure 5 Attachment of the thermocoupleonlamps with bases G6.35, GX6.35 or GY6.35 Method 2 9 Figure 6 Attachment of the thermocoupleonlamps with cap R7s Method 2 10 Figure 7 Attachment of the thermocoupleonla

21、mps with cap Fa4 Method 2 11 Figure 8 Fixing point for thermocouple 12 latest date of publication of an identical national standard (dop) 1994-08-01 latest date of withdrawal of conflicting national standards (dow) 1994-08-01 latest date by which the amendment has to be implemented at national level

22、 by publication of an identical national standard or by endorsement (dop) 1998-04-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 1998-04-01EN60682:1993 BSI 05-1999 3 1 Scope This International Standard specifies details of the type of thermoc

23、ouple to be used to measure the pinch temperature of quartz glass lamps, three methods of preparation of the lamp and thermocouple, and the measurement to be made. The first two methods require major cutting or drilling of the pinch and connection to the conducting parts of the lamp. The third metho

24、d permits the attachment of the thermocouple junction at a precise point on the surface of the pinch either by cement or by mechanical means. Under certain conditions, for example when forced cooling is used in the equipment, it is necessary to make a small hole at this point to sink the junction be

25、low the surface of the pinch. The third method can be considered to be more suitable for non-lamp makers. It is recommended that test lamps be prepared by lamp manufacturers to ensure that the thermocouple junction is placed in the correct position. 2 Definitions For the purposes of this standard, t

26、he definitions in the relevant IEC lamp publications shall apply. 3 Lamp preparation The lamp shall be prepared by one of the methods specified in Sub-clauses 3.1 and 3.2. Whichever method is adopted, the T-formed edges of the pinch, if present, shall be split to ensure a good thermal connection bet

27、ween the pinch and the thermocouple junction. 3.1 Method 1 An incision shall be made in the pinch so that the bottom of the incision coincides with the surface of the pin (see Figure 1, page 5). The incision shall be cut using a diamond wheel having a maximum width of 0.5mm and an outside diameter o

28、f about100mm. Because the wheel cuts a curved surface as shown by the line AB, the edges shall be flattened to give an incision as shown by the line AB. The corners shall be rounded to ensure that the thermocouple is in thermal contact with the pin. The incision shall be made abreast of the pin-to-f

29、oil weld at the side adjacent to the pin. The slope of the incision, , shall be chosen so that the foil does not appear in the incision. 3.2 Method 2 A hole1mm in diameter shall be made in the pinch opposite the pin-to-foil weld (see Figure 2, page 6) using an ultrasonic drill. The depth of the hole

30、 shall be such that the pin is exposed. 3.3 Method 3 The thermocouple junction shall be placed immediately over the lead/foil weld (see Figure 8) against the surface of the pinch and on the same side as the lead connection to the cap/base. NOTEIn some constructions this lead connection may be the ex

31、ternal conducting pin of the cap. The foils are normally identical in single filament lamps and either may be measured. In multiple filament lamps, the construction may not be symmetrical and more than one measurement may be needed to determine the critical element. Normally no incision is necessary

32、 in the pinch but to improve the accuracy of measurement when forced cooling is used, a small hole is made by drilling to sink the junction below the surface of the pinch. With some lamp constructions, the critical point of the pinch may be covered by the skirt or supporting system of a cap. Where t

33、his occurs the relevant area of the pinch shall be exposed by removing the material involved. This method may result in a lower degree of reproducibility compared with methods 1 and 2. If this method requires verification in some applications, methods 1 and 2 are reference methods of measurements. 4

34、 Thermocouples 4.1 Type of thermocouple The thermocouples recommended for the temperature measurement are nickel/nickel-chromium, or iron/copper-nickel (Type J). Each wire forming the couple shall have a maximum diameter of2004m. Method 1 The wires should meet at an angle of150, and after the ends h

35、ave been welded together, the wires are then brought into an approximate straight line with the weld projecting slightly to one side. Method 2 The thermocouple junction shall be formed by laying the two wires parallel, welding them together with both wires extending in the same direction from the po

36、int at which the weld is made. NOTEThe relationship between e.m.f. and temperature can be obtained from IEC Publication: Thermocouple Reference Tables (under consideration) for iron/copper-nickel (Type J) thermocouples.EN60682:1993 4 BSI 05-1999 Method 3 The thermocouple wires shall be of low therma

37、l conductivity. The recommended thermocouple is Chromel/Alumel (NiCr/NiAl) type “K” and each wire forming the couple (usually of strip form, or circular in section) shall be fine enough to pass through a0.3mm hole. The junction shall be formed either by twisting and welding the two wires or by melti

38、ng them together. All the end portions of the wires liable to be exposed to radiation shall have a high reflectance metal finish. The insulation of each wire shall be of suitable temperature and voltage rating; it shall also be thin but robust. 4.2 Fixing of thermocouples The thermocouple shall be f

39、ixed using the method specified in Sub-clause 4.2.1, 4.2.2, or 4.2.3. In order to achieve good thermal contact between the thermocouple junction and the pin, it is preferable to solder or weld the junction to the pin. If this is not possible, the thermocouple junction may be cemented to the pin. Whe

40、n cement is used, electrical contact between the thermocouple junction and the pin is taken to indicate sufficient thermal contact between them. Figure 3, Figure 4, Figure 5, Figure 6, and Figure 7, illustrate the details of examples of using methods 1 and 2 for attaching the thermocouples to lamps

41、fitted with various types of caps. Figure 8 illustrates the details of method 3. 4.2.1 For method 1 For lamps that have been prepared according to method 1 (of Sub-clause 3.1), the thermocouple shall be pulled over the pinch, in the incision, so that the junction is in thermal contact with the pin a

42、nd the junction soldered or welded to the pin. The entire incision shall then be plugged with cement (see Sub-clause 4.2.4). The use of an anchoring tab for leading the wires from the pinch is recommended (see Sub-clause 4.2.5). 4.2.2 For method 2 For lamps that have been prepared according to metho

43、d 2 (of Sub-clause 3.2), the thermocouple junction shall be placed in the hole so that the junction is in contact with the pin and each wire wound once round the pinch. The junction is then soldered or welded to the pin and the hole filled with cement (see Sub-clause 4.2.4). The use of an anchoring

44、tab for leading the wires from the pinch is recommended (see Sub-clause 4.2.5). 4.2.3 For method 3 For lamps that have been prepared according to method 3 (Sub-clause 3.3), the thermocouple shall be mechanically held in contact with the pinch face at the required position and a small drop of cement

45、(see Sub-clause 4.2.4) dripped on to the junction and allowed to cure. Some additional mechanical anchoring of the thermocouple to the lamp is desirable to prevent stresses breaking the junction. The use of an anchoring tab for leading the wires from the pinch is recommended (see Sub-clause 4.2.5).

46、NOTEThe drop of cement is to be as small as practical to avoid errors due to absorbed radiation from the filament or arc. 4.2.4 The cement shall be either a basing cement for halogen lamps, or a mixture of one part of sodium silicate and two parts of talcum powder. 4.2.5 An anchoring tab may conveni

47、ently be made using twin-capillary ceramic tube manufactured for use with thermocouples. 5 Temperature measurement The e.m.f. produced by the thermocouple shall be measured by a millivoltmeter having an input resistance about100 times the resistance of the thermocouple or by another suitable measuri

48、ng device. NOTEIf, for certain measurements, the UV radiation of the lamp is not suppressed, care should be taken to protect persons in the vicinity. 5.1 Thermal equilibrium shall be attained before a measurement is taken. This is usually achieved within0,5h to1h but may be longer with very high wat

49、tage lamps. 6 Result The temperature reading using one of the above methods, with any correction needed to take account of the ambient temperature or the cold junction temperature, shall be recorded as the pinch temperature of the lamp. When method 3 has been used this fact shall be recorded with the measurements.EN60682:1993 BSI 05-1999 5 Figure 1 Lamp preparation diagram Method 1EN60682:1993 6 BSI 05-1999 Figure 2 Lamp preparation diagram Method 2EN60682:1993 BSI 05-1999 7 Figure 3 Attachment of the therm