1、 IEC 62477-1 Edition 1.0 2012-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Safety requirements for power electronic converter systems and equipment Part 1: General Exigences de scurit applicables aux systmes et matriels lectroniques de conversion de puissance Partie 1: Gnralits IEC62477-1:2012GROU
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16、c.ch. IEC 62477-1 Edition 1.0 2012-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Safety requirements for power electronic converter systems and equipment Part 1: General Exigences de scurit applicables aux systmes et matriels lectroniques de conversion de puissance Partie 1: Gnralits INTERNATIONAL
17、ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XJ ICS 29.200 PRICE CODE CODE PRIX ISBN 978-2-83220-194-7 GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique
18、Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colourinside 2 62477-1 IEC:2012 CONTENTS FOREWORD . 8 INTRODUCTION . 10 1 Scope . 11 2 Normative refer
19、ences 12 3 Terms and definitions . 14 4 Protection against hazards 23 4.1 General . 23 4.2 Fault and abnormal conditions . 24 4.3 Short circuit and overload protection 25 4.3.1 General . 25 4.3.2 Specification of input short-circuit withstand strength and output short circuit current ability . 26 4.
20、3.3 Short-circuit coordination (backup protection) . 27 4.3.4 Protection by several devices . 27 4.4 Protection against electric shock 27 4.4.1 General . 27 4.4.2 Decisive voltage class 27 4.4.3 Provision for basic protection . 32 4.4.4 Provision for fault protection . 34 4.4.5 Enhanced protection 4
21、0 4.4.6 Protective measures 41 4.4.7 Insulation . 43 4.4.8 Compatibility with residual current-operated protective devices (RCD) 58 4.4.9 Capacitor discharge . 58 4.5 Protection against electrical energy hazards . 59 4.5.1 Operator access areas . 59 4.5.2 Service access areas . 60 4.6 Protection aga
22、inst fire and thermal hazards 60 4.6.1 Circuits representing a fire hazard 60 4.6.2 Components representing a fire hazard 60 4.6.3 Fire enclosures 61 4.6.4 Temperature limits . 65 4.6.5 Limited power sources . 68 4.7 Protection against mechanical hazards 69 4.7.1 General . 69 4.7.2 Specific requirem
23、ents for liquid cooled PECS . 70 4.8 Equipment with multiple sources of supply . 71 4.9 Protection against environmental stresses . 72 4.10 Protection against sonic pressure hazards . 73 4.10.1 General . 73 4.10.2 Sonic pressure and sound level 73 4.11 Wiring and connections . 73 4.11.1 General . 73
24、 4.11.2 Routing 73 4.11.3 Colour coding 73 4.11.4 Splices and connections 74 62477-1 IEC:2012 3 4.11.5 Accessible connections 74 4.11.6 Interconnections between parts of the PECS 74 4.11.7 Supply connections 75 4.11.8 Terminals 75 4.12 Enclosures 76 4.12.1 General . 76 4.12.2 Handles and manual cont
25、rols . 76 4.12.3 Cast metal . 77 4.12.4 Sheet metal . 77 4.12.5 Stability test for enclosure 80 5 Test requirements . 81 5.1 General . 81 5.1.1 Test objectives and classification . 81 5.1.2 Selection of test samples . 81 5.1.3 Sequence of tests 81 5.1.4 Earthing conditions 81 5.1.5 General condition
26、s for tests . 81 5.1.6 Compliance . 82 5.1.7 Test overview 83 5.2 Test specifications . 84 5.2.1 Visual inspections (type test, sample test and routine test) . 84 5.2.2 Mechanical tests 84 5.2.3 Electrical tests . 88 5.2.4 Abnormal operation and simulated faults tests 102 5.2.5 Material tests . 106
27、5.2.6 Environmental tests (type tests) . 110 5.2.7 Hydrostatic pressure test (type test and routine test) 115 6 Information and marking requirements 115 6.1 General . 115 6.2 Information for selection 117 6.3 Information for installation and commissioning . 118 6.3.1 General . 118 6.3.2 Mechanical c
28、onsiderations . 118 6.3.3 Environment 118 6.3.4 Handling and mounting 118 6.3.5 Enclosure temperature . 118 6.3.6 Connections. 119 6.3.7 Protection requirements . 119 6.3.8 Commissioning 121 6.4 Information for use 121 6.4.1 General . 121 6.4.2 Adjustment 121 6.4.3 Labels, signs and signals . 121 6.
29、5 Information for maintenance 123 6.5.1 General . 123 6.5.2 Capacitor discharge . 124 6.5.3 Auto restart/bypass connection 124 6.5.4 Other hazards 124 6.5.5 Equipment with multiple sources of supply . 124 4 62477-1 IEC:2012 Annex A (normative) Additional information for protection against electric s
30、hock . 125 Annex B (informative) Considerations for the reduction of the pollution degree 145 Annex C (informative) Symbols referred to in IEC 62477-1 146 Annex D (normative) Evaluation of clearance and creepage distances 147 Annex E (informative) Altitude correction for clearances . 155 Annex F (no
31、rmative) Clearance and creepage distance determination for frequencies greater than 30 kHz . 156 Annex G (informative) Cross-sections of round conductors . 162 Annex H (informative) Guidelines for RCD compatibility 163 Annex I (informative) Examples of overvoltage category reduction 167 Annex J (inf
32、ormative) Burn thresholds for touchable surfaces . 174 Annex K (informative) Table of electrochemical potentials 177 Annex L (informative) Measuring instrument for touch current measurements . 178 Annex M (informative) Test probes for determining access . 179 Bibliography 182 Figure 1 Touch time-d.c
33、. peak voltage zones of ventricular fibrillation in dry skin condition . 30 Figure 2 Touch time- d.c. peak voltage zones of ventricular fibrillation in water-wet skin condition 31 Figure 3 Touch time- d.c. peak voltage zones of ventricular fibrillation in saltwater-wet skin condition 31 Figure 4 Exa
34、mple of a PECS assembly and its associated protective equipotential bonding . 36 Figure 5 Example of a PECS assembly and its associated protective equipotential bonding . 37 Figure 6 Fire enclosure bottom openings below an unenclosed or partially enclosed fire-hazardous component . 63 Figure 7 Fire
35、enclosure baffle construction . 64 Figure 8 Supported and unsupported enclosure parts . 78 Figure 9 Impact test using a steel ball . 86 Figure 10 Voltage test procedures 93 Figure 11 Protective equipotential bonding impedance test for separate unit with power fed from the PECS with protection for th
36、e power cable 99 Figure 12 Protective equipotential bonding impedance test for sub-assembly with accessible parts and with power fed from the PECS 100 Figure 13 Circuit for high-current arcing test . 107 Figure 14 Test fixture for hot-wire ignition test 108 Figure A.1 Protection by DVC As with prote
37、ctive separation 125 Figure A.2 Protection by means of protective impedance 126 Figure A.3 Protection by using limited voltages . 127 Figure A.4 Touch time- d.c. voltage zones for dry skin condition . 130 Figure A.5 Touch time- d.c. voltage zones for water-wet skin condition . 130 Figure A.6 Touch t
38、ime- d.c. voltage for saltwater-wet skin condition 131 Figure A.7 Touch time- d.c. voltage zones of dry skin condition . 132 Figure A.8 Touch time- d.c. voltage zones of water-wet skin condition 132 62477-1 IEC:2012 5 Figure A.9 Touch time- d.c. voltage zones of saltwater-wet skin condition . 133 Fi
39、gure A.10 Touch time- d.c. voltage zones of dry skin condition . 134 Figure A.11 Touch time- d.c. voltage zones of water-wet skin condition . 134 Figure A.12 Touch time- a.c. voltage zones for dry skin condition . 135 Figure A.13 Touch time- a.c. voltage zones of water-wet skin condition . 136 Figur
40、e A.14 Touch time- a.c. voltage of saltwater-wet skin condition . 136 Figure A.15 Touch time- a.c. voltage zones of dry skin condition . 137 Figure A.16 Touch time- a.c. voltage zones of water-wet skin condition . 138 Figure A.17 Touch time- a.c. voltage zones of saltwater-wet skin condition . 138 F
41、igure A.18 Touch time- a.c. voltage zones of dry skin condition . 139 Figure A.19 Touch time- a.c. voltage zones of water-wet skin condition . 140 Figure A.20 Typical waveform for a.c. working voltage 141 Figure A.21 Typical waveform for d.c. working voltage 141 Figure A.22 Typical waveform for puls
42、ating working voltage 142 Figure F.1 Diagram for dimensioning of clearances 157 Figure F.2 Diagram for dimensioning of creepage distances . 159 Figure F.3 Permissible field strength for dimensioning of solid insulation according to Equation (1) 161 Figure H.1 Flow chart leading to selection of the R
43、CD type upstream of a PECS . 163 Figure H.2 Fault current waveforms in connections with power electronic converter devices . 165 Figure I.1 Basic insulation evaluation for circuits connected to the origin of the installation mains supply . 167 Figure I.2 Basic insulation evaluation for circuits conn
44、ected to the mains supply . 168 Figure I.3 Basic insulation evaluation for single and three phase equipment not permanently connected to the mains supply . 168 Figure I.4 Basic insulation evaluation for circuits connected to the origin of the installation mains supply where internal SPDs are used .
45、168 Figure I.5 Basic insulation evaluation for circuits connected to the mains supply where internal SPDs are used . 169 Figure I.6 Example of protective separation evaluation for circuits connected to the mains supply where internal SPDs are used 169 Figure I.7 Example of protective separation eval
46、uation for circuits connected to the mains supply where internal SPDs are used 170 Figure I.8 Example of protective separation evaluation for circuits connected to the mains supply where internal SPDs are used 170 Figure I.9 Basic insulation evaluation for circuits not connected directly to the main
47、s supply . 170 Figure I.10 Basic insulation evaluation for circuits not connected directly to the supply mains 171 Figure I.11 Functional insulation evaluation within circuits affected by external transients 171 Figure I.12 Basic insulation evaluation for circuits both connected and not connected di
48、rectly to the mains supply . 172 Figure I.13 Insulation evaluation for accessible circuit of DVC A . 172 Figure I.14 PEC with mains and non-mains supply without galvanic separation 173 6 62477-1 IEC:2012 Figure I.15 Transformer (basic) isolated PEC inverter with SPD and transformer to reduce impulse
49、 voltage for functional and basic insulation. 173 Figure J.1 Burn threshold spread when the skin is in contact with a hot smooth surface made of bare (uncoated) metal . 174 Figure J.2 Rise in the burn threshold spread from Figure J.1 for metals which are coated by shellac varnish of a thickness of 50 m, 100 m and 150 m . 175 Figure J.3 Rise in
