IEC TS 62850-2013 Safety requirements for electrical equipment for measurement control and laboratory use - Part 1-1 Technical Specification General requirements for equipment inte.pdf

1、 IEC/TS 62850 Edition 1.0 2013-02 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE Safety requirements for electrical equipment for measurement, control, and laboratory use General requirements for equipment intended to be used in educational establishments by children Rgles de scurit pour appareils l

2、ectriques de mesurage, de rgulation et de laboratoire Rgles gnrales pour appareils destins une utilisation dans les tablissements scolaires par des enfants IEC/TS62850:2013 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified

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16、s dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC/TS 62850 Edition 1.0 2013-02 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE Safety requirements for electrical equipment for measurement, control, and laboratory use General requi

17、rements for equipment intended to be used in educational establishments by children Rgles de scurit pour appareils lectriques de mesurage, de rgulation et de laboratoire Rgles gnrales pour appareils destins une utilisation dans les tablissements scolaires par des enfants INTERNATIONAL ELECTROTECHNIC

18、AL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XH ICS 19.080 PRICE CODE CODE PRIX ISBN 978-2-83220-655-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication

19、 from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 TS 62850 IEC:2013 CONTENTS FOREWORD . 10 INTRODUCTION . 12 1 Scope and object 13 Scope 13 1.1Equipment included in scope . 13 1.1.1Equipment excluded from scope 13 1.1.

20、2Computing equipment 14 1.1.3Object . 14 1.2Aspects included in scope . 14 1.2.1Aspects excluded from scope 15 1.2.2Verification 15 1.3Environmental conditions 15 1.4Normal environmental conditions . 15 1.4.1Extended environmental conditions . 15 1.4.22 Normative references . 16 3 Terms and definiti

21、ons . 18 Equipment and states of equipment . 18 3.1Parts and accessories . 18 3.2Quantities 19 3.3Tests . 20 3.4Safety terms 20 3.5Insulation 22 3.64 Tests 23 General . 23 4.1Sequence of tests . 24 4.2Reference test conditions 24 4.3Environmental conditions . 24 4.3.1State of equipment 24 4.3.2Testi

22、ng in SINGLE FAULT CONDITION . 26 4.4General . 26 4.4.1Application of fault conditions 26 4.4.2Duration of tests 29 4.4.3Conformity after application of fault conditions. 29 4.4.45 Marking and documentation 30 Marking . 30 5.1General . 30 5.1.1Identification 30 5.1.2MAINS supply . 30 5.1.3Fuses 32 5

23、1.4TERMINALS, connections and operating devices 32 5.1.5Switches and circuit-breakers 33 5.1.6Equipment protected by DOUBLE INSULATION or REINFORCED 5.1.7INSULATION . 33 Field-wiring TERMINAL boxes 34 5.1.8Warning markings . 34 5.2Durability of markings 34 5.3Documentation 35 5.4TS 62850 IEC:2013 3

24、 General . 35 5.4.1Equipment RATINGS 35 5.4.2Equipment installation . 36 5.4.3Equipment operation 36 5.4.4Equipment maintenance and service . 37 5.4.5Integration into systems or effects resulting from special conditions 37 5.4.66 Protection against electric shock 38 General . 38 6.1Requirements 38 6

25、1.1Exceptions . 38 6.1.2Determination of ACCESSIBLE parts . 38 6.2General . 38 6.2.1Examination 39 6.2.2Not used Openings above parts that are HAZARDOUS LIVE . 39 6.2.3Not used Openings for pre-set controls 39 6.2.4Additional determination for all openings except TERMINALS . 40 6.2.5Limit values fo

26、r ACCESSIBLE parts. 40 6.3Levels in NORMAL CONDITION . 40 6.3.1Levels in SINGLE FAULT CONDITION. 40 6.3.2Primary means of protection 43 6.4General . 43 6.4.1ENCLOSURES and PROTECTIVE BARRIERS 43 6.4.2BASIC INSULATION . 43 6.4.3Impedance. 43 6.4.4Additional means of protection in case of SINGLE FAULT

27、 CONDITIONS . 43 6.5General . 43 6.5.1PROTECTIVE BONDING 44 6.5.2SUPPLEMENTARY INSULATION and REINFORCED INSULATION 47 6.5.3PROTECTIVE IMPEDANCE 47 6.5.4Automatic disconnection of the supply . 48 6.5.5Current- or voltage-limiting device . 48 6.5.6Connections to external circuits . 48 6.6General . 48

28、 6.6.1TERMINALS for external circuits . 49 6.6.2Circuits with TERMINALS which are HAZARDOUS LIVE . 49 6.6.3TERMINALS for stranded conductors 49 6.6.4Insulation requirements . 50 6.7The nature of insulation . 50 6.7.1Insulation for MAINS CIRCUITS of OVERVOLTAGE CATEGORY II with a 6.7.2nominal supply

29、voltage up to 300 V . 52 Insulation for secondary circuits derived from MAINS CIRCUITS of 6.7.3OVERVOLTAGE CATEGORY II up to 300 V . 56 Procedure for voltage tests 61 6.8General . 61 6.8.1Humidity preconditioning . 62 6.8.2Test procedures 63 6.8.3Constructional requirements for protection against el

30、ectric shock 63 6.9General . 63 6.9.1Insulating materials . 64 6.9.2 4 TS 62850 IEC:2013 Colour coding 64 6.9.3Connection to the MAINS supply source and connections between parts of 6.10equipment . 64 MAINS supply cords 64 6.10.1Fitting of non-detachable MAINS supply cords . 65 6.10.2Plugs and conne

31、ctors 67 6.10.3Disconnection from supply source . 67 6.11General . 67 6.11.1Exceptions . 67 6.11.2Requirements according to type of equipment . 67 6.11.3Disconnecting devices . 68 6.11.47 Protection against mechanical HAZARDS 69 General . 69 7.1Sharp edges 69 7.2Moving parts . 69 7.3General . 69 7.3

32、1Exceptions . 69 7.3.2RISK assessment for mechanical HAZARDS to body parts 70 7.3.3Limitation of force and pressure. 71 7.3.4Gap limitations between moving parts . 71 7.3.5Stability . 73 7.4Provisions for lifting and carrying. 74 7.5General . 74 7.5.1Handles and grips 74 7.5.2Lifting devices and su

33、pporting parts 74 7.5.3Wall mounting . 75 7.6Expelled parts . 75 7.78 Resistance to mechanical stresses . 75 General . 75 8.1ENCLOSURE rigidity tests 76 8.2Static test 76 8.2.1Impact test 77 8.2.2Drop test . 78 8.3Equipment other than HAND-HELD EQUIPMENT and DIRECT PLUG-IN 8.3.1EQUIPMENT . 78 HAND-H

34、ELD EQUIPMENT and DIRECT PLUG-IN EQUIPMENT 78 8.3.29 Protection against the spread of fire . 78 General . 78 9.1Eliminating or reducing the sources of ignition within the equipment 80 9.2Containment of fire within the equipment, should it occur 80 9.3General . 80 9.3.1Constructional requirements 80

35、9.3.2Limited-energy circuit 83 9.4Requirements for equipment containing or using flammable liquids . 84 9.5Overcurrent protection . 84 9.6General . 84 9.6.1PERMANENTLY CONNECTED EQUIPMENT . 85 9.6.2Other equipment 85 9.6.310 Equipment temperature limits and resistance to heat 85 TS 62850 IEC:2013 5

36、Surface temperature limits for protection against burns . 85 10.1Temperatures of windings . 86 10.2Other temperature measurements . 87 10.3Conduct of temperature tests 87 10.4General . 87 10.4.1Temperature measurement of heating equipment 87 10.4.2Equipment intended for installation in a cabinet or

37、a wall . 88 10.4.3Resistance to heat 88 10.5Integrity of CLEARANCES and CREEPAGE DISTANCES 88 10.5.1Non-metallic ENCLOSURES 88 10.5.2Insulating material . 88 10.5.311 Protection against HAZARDS from fluids . 89 General . 89 11.1Cleaning 90 11.2Spillage . 90 11.3Overflow 90 11.4Battery electrolyte .

38、90 11.5Specially protected equipment . 91 11.6Fluid pressure and leakage . 91 11.7Maximum pressure 91 11.7.1Leakage and rupture at high pressure . 91 11.7.2Leakage from low-pressure parts . 92 11.7.3Overpressure safety device . 92 11.7.412 Protection against radiation, including laser sources, and a

39、gainst sonic and ultrasonic pressure . 92 General . 92 12.1Equipment producing ionizing radiation . 92 12.2Ionizing radiation . 92 12.2.1Accelerated electrons 94 12.2.2Ultraviolet (UV) Optical radiation . 94 12.3Microwave radiation 95 12.4Sonic and ultrasonic pressure . 95 12.5Sound level . 95 12.5.

40、1Ultrasonic pressure . 95 12.5.2Laser sources 96 12.613 Protection against liberated gases and substances, explosion and implosion . 96 Poisonous and injurious gases and substances . 96 13.1Explosion and implosion 97 13.2Components 97 13.2.1Batteries and battery charging . 97 13.2.2Implosion of cath

41、ode ray tubes 97 13.2.314 Components and subassemblies 98 General . 98 14.1Motors . 99 14.2Motor temperatures . 99 14.2.1Series excitation motors 99 14.2.2Overtemperature protection devices 100 14.3Fuse holders . 100 14.4MAINS voltage selection devices 100 14.5 6 TS 62850 IEC:2013 MAINS transformers

42、 tested outside equipment 100 14.6Printed wiring boards. 101 14.7Circuits or components used as TRANSIENT OVERVOLTAGE limiting devices . 101 14.8Small components . 102 14.915 Protection by interlocks 102 General . 102 15.1Prevention of reactivating 102 15.2Reliability 102 15.316 HAZARDS resulting fr

43、om application . 103 REASONABLY FORESEEABLE MISUSE 103 16.1Ergonomic aspects 103 16.217 RISK assessment 103 (normative) Measuring circuits for touch current (see 6.3). 105 Annex A(normative) Standard test fingers (see 6.2) . 109 Annex B(normative) Measurement of CLEARANCES and CREEPAGE DISTANCES 112

44、 Annex C(normative) Parts between which insulation requirements are specified (see Annex D6.4 and 6.5.3) . 116 (informative) Guideline for reduction of POLLUTION DEGREES 119 Annex E(normative) ROUTINE TESTS 120 Annex F(informative) Leakage and rupture from fluids under pressure 122 Annex G(normative

45、) Qualification of conformal coatings for protection against Annex HPOLLUTION . 127 (informative) Line-to-neutral voltages for common MAINS supply systems . 130 Annex I(informative) RISK assessment 131 Annex J(normative) Insulation requirements not covered by 6.7 134 Annex K(informative) Index of de

46、fined terms 156 Annex LBibliography 158 Figure 1 Measurements through openings in ENCLOSURES 39 Figure 2 Maximum duration of short-term ACCESSIBLE voltages in SINGLE FAULT CONDITION (see 6.3.2 a) . 41 Figure 3 Capacitance level versus voltage in NORMAL CONDITION and SINGLE FAULT CONDITION (see 6.3.1

47、 c) and 6.3.2 c) 42 Figure 4 Acceptable arrangement of protective means against electric shock 44 Figure 5 Examples of binding screw assemblies 46 Figure 6 Distance between conductors on an interface between two layers 54 Figure 7 Distance between adjacent conductors along an interface of two inner

48、layers . 54 Figure 8 Distance between adjacent conductors located between the same two layers . 55 Figure 9 Detachable MAINS supply cords and connections 65 Figure 10 Impact test using a sphere . 77 Figure 11 Flow chart to explain the requirements for protection against the spread of fire 79 Figure

49、12 Baffle . 82 Figure 13 Area of the bottom of an ENCLOSURE to be constructed as specified in 9.3.2 c) 1) . 82 TS 62850 IEC:2013 7 Figure 14 Ball-pressure test apparatus 89 Figure 15 Flow chart for conformity options 14.1 a), b), c) and d) . 99 Figure 16 Cylinder for checking the size of small components 102 Figure A.1 Measuring circuit for a.c. with frequencies up to 1 MHz and for d.c. . 105 Figure A.2 Measuring ci