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1、BRITISH STANDARD BS 6120:1988 EN 50036:1987 Specification for Low-voltage switchgear and controlgear for industrial use Inductive proximity switches Form A, for alternating current, 2 terminals This European Standard EN 50036 has the status of a British Standard UDC: 621.316.549.9:621.3.011.3:621.3.
2、025.027.2 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6120:1988 This British Standard, having been prepared under the direction of the Power Electrical Engineering Standards Committee, was published under the authority of the Board of
3、 BSI and comes into effect on 29 January 1988 BSI 11-1999 First published July 1982 First revision January 1988 The following BSI references relate to the work on this standard: Committee reference PEL/10 Draft for comment 84/29152 DC ISBN 0 580 16459 4 Cooperating organizations The European Committ
4、ee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the National Committees of the following countries. AustriaLuxemburg BelgiumNetherlands DenmarkNorway FinlandPortugal FranceSpain GermanySweden GreeceSwitzerland IrelandUnited Ki
5、ngdom Italy Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6120:1988 BSI 11-1999i Contents Page Cooperating organizationsInside front cover National forewordii 1Scope3 2De
6、finition3 3Dimensions3 4Installation3 5Designation3 6Characteristics3 National appendix AInside back cover National appendix BInside back cover Figure 1 Inductive proximity switch. Form A3 Figure 2 Type A3w Embedded installation in damping material4 Figure 3 Type A4w Not embedded installation in dam
7、ping material4 Table 1 Dimensions4 Table 2 Rated operating distances in mm4 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6120:1988 ii BSI 11-1999 National foreword This British Standard has been prepared under the direction of the Powe
8、r Electrical Engineering Standards Committee and is the English language version of EN 50036:1987 “Low-voltage switchgear and controlgear. Inductive proximity switches. Form A, for alternating current, 2 terminals” published by the European Committee for Electrotechnical Standardization (CENELEC). T
9、his standard supersedes BS 6120:1982 which is withdrawn. Terminology and conventions. The text of the European Standard may use some terminology and conventions that differ from those commonly used in British Standards. A British Standard does not purport to include all the necessary provisions of a
10、 contract. Users 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, the EN title page, pages 2
11、 to 6, an inside 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 the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontr
12、olled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50036 October 1987 UDC: 621.316.549.9:621.3.011.3:621.3.025.027.2 Key words: Electrical switchgear and controlgear; industrial use; low voltage; proximity switches; inductive proximity switches; operating distance; operating fr
13、equency English version Low voltage switchgear and controlgear for industrial use. Inductive proximity switches. Form A, for alternating current, 2 terminals Appareillage industriel basse tension. Dtecteurs de proximit inductifs. Forme A, pour courant alternatif, 2 bornes Industrielle Niederspannung
14、-Schaltgerte. Induktive Nherungsschalter. Form A, fr Wechselspannung, 2 Anschlsse This European Standard was ratified by CENELEC on 3 December 1985. CENELEC members are bound to comply with the requirements of the CENELEC Internal Regulations which stipulate the conditions for giving this European S
15、tandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CENELEC General Secretariat or to any CENELEC member. This European Standard exists in three official versions (E
16、nglish, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CENELEC General Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees o
17、f: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee
18、 fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels CENELEC 1987. Copyright reserved to all CENELEC members Ref. No. EN 50036:1987 E Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 blank Licensed Copy: sh
19、effieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50036:1987 BSI 11-19993 This European Standard has been prepared by the CENELEC Technical Committee 17B. Dimensions in mm. 1 Scope This standard specifies only inductive proximity switches for alternating cu
20、rrent, in cylindrical form, with 2 terminals for rated voltages between 24 V and 240 V (r.m.s.). Two types are included: Embeddable in metal (see Figure 2): A3w Not embeddable in metal (see Figure 3): A4w 2 Definitions Definitions are given in European Standard EN 50032. 3 Dimensions The dimensions
21、to be observed are shown in Figure 1 and the actual range of possible dimensions is given in Table 1. Apart from these dimensions, the design of the proximity switch is not restricted. Within the dimensions d2 and l2 are included all the rigid parts of cable entries. The diameter of unthreaded porti
22、on d2 shall not exceed the minor diameter of the thread. For type A3., the thread can be omitted and the diameter reduced to d2 on a length not exceeding l3= 1 mm. For type A4., the thread can be omitted and the diameter reduced to d2 on a length not exceeding l3= 2 sn. The length of connecting lead
23、 shall be 2 m. 4 Installation (see Figure 2 and Figure 3) The dimensions are given for proximity switches installed in mild steel, Fe 360, according to Euronorm 271). 5 Designation Example of designation of a proximity switch From Aww Embeddable w3w Size ww3. Proximity switch EN 50036 A33. Additiona
24、lly, the following are to be given: the rated voltage; the output current; the function (make or break). 6 Characteristics The characteristics of the proximity switch shall be achieved even when mounted as shown in Figure 2 and Figure 3 of clause 4. These characteristics are valid over the whole amb
25、ient temperature (Ta) and the supply voltage (Ub) ranges except when otherwise specified. Requirements concerning the nature of the load and the corresponding tests are under consideration. 1) Each national committee may indicate its own symbol. Figure 1 Inductive proximity switch. Form A Licensed C
26、opy: sheffieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50036:1987 4 BSI 11-1999 Table 1 Dimensions 6.1 Operating distance s The operating distances are measured according to EN 50010. 6.1.1 Rated operating distance sn Rated operating distances are given i
27、n Table 2. Table 2 Rated operating distances in mm 6.1.2 Effective operating distance sr The effective operating distance is measured at rated voltage (Un) and rated ambient temperature (Tn). It shall be between 90 % and 110 % of the rated operating distance (sn): 0,9 snu sru 1,1 sn 6.1.3 Usable ope
28、rating distance su The usable operating distance is measured with the ambient temperature (Ta) and the supply voltage (Ub) being within the limits prescribed. It shall be between 90 % and 110 % of the effective operating distance sr: 0,9 sru suu 1,1 sr TypeDimensions A3w embeddable A4w not embeddabl
29、e BodyNuts d1l1 min. l2 max. sw h 12 m 0,15 d3 max.aSizeSize ww3ww3M18 15010024428 ww4ww4M30 1,55010036542 a d3 min = 1,13 sw Figure 2 Type A3w Embedded installation in damping material Figure 3 Type A4w Not embedded installation in damping material Type A3w embeddable Type A4w not embeddable SizeRa
30、ted operating distance, sn SizeRated operating distance, sn ww35ww38 ww410ww415 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50036:1987 BSI 11-19995 6.1.4 Actuation distance sa The actuation distance is between 0 and 81 % of the rated
31、operating distance (sn): 0 u sau 0,9 0,9 sn 6.2 Repeat accuracy R The repeat accuracy of the usable operating distance (su) is measured over an 8-hour period with an enclosure temperature between 15 C and 30 C and with a supply voltage between Un+ 5 % and Un 5 %. The difference between any two measu
32、rements shall not exceed 10 % of the rated operating distance (sn): R u 0,1 sn 6.3 Differential travel H The differential travel is given as a percentage of the effective operating distance (sr). It shall be between 3 % and 20 % of the effective operating distance (sr). The measurement is made in ac
33、cordance with European Standard EN 50010 at rated ambient temperature (Tn) and rated voltage (Un): 0,03 sru H u 0,20 sr 6.4 Voltages U 6.4.1 Rated voltage Un The r.m.s. value of the voltage shall be between 24 V and 240 V: 24 V u Un240 V (r.m.s.) 6.4.2 Supply voltage Ub The r.m.s. value of the suppl
34、y voltage shall be between 85 % and 110 % of the rated voltage (Un): 0,85 Unu Ubu 1,10 Un(r.m.s.) 6.4.3 Supply frequency fb The supply frequency shall be between 45 and 65 Hz: 45 Hz u fbu 65 Hz 6.5 Output 6.5.1 Voltage drop Ud The voltage drop, measured across the proximity switch when closed and ca
35、rrying the maximum permanent current (Ia) at the minimum ambient temperature (Ta) and supplied with the maximum supply voltage (Ub), shall not exceed 10 V (r.m.s.). This measurement shall be performed by connecting in series with the proximity switch a resistive load corresponding to the maximum cur
36、rent (Ia): Udu 10 V (r.m.s.) 6.5.2 Output operation The output operation shall be snap action (for break and make function). 6.5.3 Currents I 6.5.3.1 Permanent current Ia A proximity switch shall perform correctly for a permanent current between 5 mA and 200 mA (r.m.s.): 5 mA u Iau 200 mA (r.m.s.) 6
37、.5.3.2 Residual current Ir The residual current shall not exceed 3 mA (r.m.s.): Iru 3 mA (r.m.s.) 6.5.3.3 Short time withstand current Ik The proximity switch shall carry a current equal to 1,2 A (r.m.s.), during 20 ms with an operating frequency of 1 Hz: Ik = 1,2 A (r.m.s.) during 20 ms with f = 1
38、Hz 6.6 Time characteristics 6.6.1 Operating frequency f The operating frequency shall be at least 5 Hz. It is measured in accordance with EN 50010 with a resistive load corresponding to a current of 200 mA: f W 5 Hz 6.6.2 Time delay before availability tv The time delay before availability shall not
39、 exceed 300 ms: tvu 300 ms During this time, the output shall not give any false signal other than 0 when the distance between the target and the sensing face is greater than 3 sn for make output function or less than 2/3 sn for break output function proximity switches. 6.7 Temperatures T 6.7.1 Rate
40、d ambient temperature Tn The rated ambient temperature is 20 C: Tn= 20 C 6.7.2 Ambient temperature Ta The permissible range of ambient temperature is 25 C to + 70 C: 25 C u Ta+ 70 C 6.8 Degree of protection The degree of protection is indicated and measured in accordance with CENELEC Harmonization D
41、ocument HD 365-S3 (IEC Publication 5292). This shall be IP 67. 2) or IEC Publication 144 when this is revised. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50036:1987 6 BSI 11-1999 6.9 Shock and vibration tests The measurements are mad
42、e in accordance with IEC Publications 68-2-27 and 68-2-6 or harmonized national standards. The operating characteristics of the proximity switch shall be maintained during the measurements. 6.9.1 Shock tests The conditions of the shock tests shall be as follows: Pulse shape: half-sine; Peak accelera
43、tion: u 30 gn; Duration of the pulse: 11 ms. 6.9.2 Vibration tests The conditions of vibration tests shall be as follows: Frequency: 10 Hz to 5 Hz; Amplitude: u 1 mm; Sweep cycle duration: 5 minutes; Duration at resonant frequency or at 55 Hz: 30 minutes in each of the 3 axes (90 minutes in all). Li
44、censed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:20:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6120:1988 BSI 11-1999 National appendix A The United Kingdom participation in the preparation of this European Standard was entrusted by the Power Electrical Engineering Standards Committee (P
45、EL/-) to Technical Committee PEL/10 upon which the following bodies were represented: ASTA Certification Services Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd) British Gas Plc Electrical Contractors Association Electrical Installation Equipment Manufacture
46、rs Association (BEAMA Ltd) Electricity Supply Industry in England and Wales Electronic Components Industry Federation ERA Technology Ltd GAMBICA (BEAMA Ltd) Health and Safety Executive Institution of Electrical Engineers National appendix B The British Standards corresponding to the IEC/ISO Publicat
47、ions, Euronorm and European Standards referred to in EN 50036 are as follows: Euronorm 27 has not been implemented as a British Standard but details of the Fe 360 steel referred to in clause 4 of EN 50036 are contained in Euronorm 25 and ISO 630:1980. A related British Standard to Euronorm 25 and IS
48、O 630 is BS 4360:1986. NOTEISO 630 is under revision and the proposed draft changes the designation of the steel Fe 360 to E 235. European StandardBritish Standard (identical) EN 50010:1974BS 5271:1976 Inductive proximity switches. Methods for measuring the operating distance and operating frequency
49、 EN 50032:1980BS 6226:1982 Specification for low-voltage switchgear and controlgear for industrial use. Inductive proximity switches. Definitions, classification and designation IEC PublicationBritish Standard BS 2011 Basic environmental testing procedures IEC 68-2-6:1982Part 2.1 Fc:1983 Test Fc. Vibration (sinusoidal) (Identical) IEC 68-2-7:1983Part 2.1 Ea:1977 Test Ea. Shock (Identical) IEC 529:1976 (HD 365.S3) BS 5490:1977 Specification for classification of degrees of protection provided by enclosures (Identic