1、 IEC 60364-5-52Edition 3.0 2009-10INTERNATIONAL STANDARD NORME INTERNATIONALELow-voltage electrical installations Part 5-52: Selection and erection of electrical equipment Wiring systems Installations lectriques basse tension Partie 5-52: Choix et mise en uvre des matriels lectriques Canalisations I
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16、AQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60364-5-52Edition 3.0 2009-10INTERNATIONAL STANDARD NORME INTERNATIONALELow-voltage electrical installations Part 5-52: Selection and erection of electrical equipment Wiring systems Installation
17、s lectriques basse tension Partie 5-52: Choix et mise en uvre des matriels lectriques Canalisations INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XCICS 13.260; 91.140.50 PRICE CODECODE PRIXISBN 2-8318-1062-0 Registered trademark of the International Electrotech
18、nical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60364-5-52 IEC:2009 CONTENTS FOREWORD.6 520 Introduction .8 520.1 Scope.8 520.2 Normative references .8 520.3 Terms and definitions .9 520.4 General 9 521 Types of wiring system 10 521.4 Busbar trunking systems and powe
19、rtrack systems 10 521.5 AC circuits Electromagnetic effects (prevention of eddy current).10 521.6 Conduit systems, cable ducting systems, cable trunking systems, cable tray systems and cable ladder systems.10 521.7 Several circuits in one cable .11 521.8 Circuit arrangements 11 521.9 Use of flexible
20、 cables or cords11 521.10 Installation of cables.11 522 Selection and erection of wiring systems in relation to external influences .11 522.1 Ambient temperature (AA) 11 522.2 External heat sources .12 522.3 Presence of water (AD) or high humidity (AB).12 522.4 Presence of solid foreign bodies (AE)
21、.12 522.5 Presence of corrosive or polluting substances (AF) 13 522.6 Impact (AG) 13 522.7 Vibration (AH).13 522.8 Other mechanical stresses (AJ) 13 522.9 Presence of flora and/or mould growth (AK)15 522.10 Presence of fauna (AL).15 522.11 Solar radiation (AN) and ultraviolet radiation.15 522.12 Sei
22、smic effects (AP) .15 522.13 Wind (AR).15 522.14 Nature of processed or stored materials (BE) .15 522.15 Building design (CB).15 523 Current-carrying capacities 16 523.5 Groups containing more than one circuit.17 523.6 Number of loaded conductors .17 523.7 Conductors in parallel.17 523.8 Variation o
23、f installation conditions along a route .18 523.9 Single-core cables with a metallic covering.18 524 Cross-sectional areas of conductors 18 524.2 Cross-sectional area of the neutral conductor.19 525 Voltage drop in consumers installations 20 526 Electrical connections20 526.8 Connection of multi wir
24、e, fine wire and very fine wire conductors21 527 Selection and erection of wiring systems to minimize the spread of fire .21 527.1 Precautions within a fire-segregated compartment21 527.2 Sealing of wiring system penetrations.22 528 Proximity of wiring systems to other services.23 60364-5-52 IEC:200
25、9 3 528.1 Proximity to electrical services23 528.2 Proximity of communications cables .23 528.3 Proximity to non-electrical services.23 529 Selection and erection of wiring systems in relation to maintainability, including cleaning.24 Annex A (normative) Methods of installations.25 Annex B (informat
26、ive) Current-carrying capacities .34 Annex C (informative) Example of a method of simplification of the tables of Clause 523 .63 Annex D (informative) Formulae to express current-carrying capacities .67 Annex E (normative) Effect of harmonic currents on balanced three-phase systems 71 Annex F (infor
27、mative) Selection of conduit systems .73 Annex G (informative) Voltage drop in consumers installations .74 Annex H (informative) Examples of configurations of parallel cables76 Annex I (informative) List of notes concerning certain countries.79 Bibliography84 Figure H.52.1 Special configuration for
28、6 parallel single-core cables in a flat plane (see 523.7) .76 Figure H.52.2 Special configuration for 6 parallel single-core cables above each other (see 523.7) 76 Figure H.52.3 Special configuration for 6 parallel single-core cables in trefoil (see 523.7) .77 Figure H.52.4 Special configuration for
29、 9 parallel single-core cables in a flat plane (see 523.7) .77 Figure H.52.5 Special configuration for 9 parallel single-core cables above each other (see 523.7) 77 Figure H.52.6 Special configuration for 9 parallel single-core cables in trefoil (see 523.7) .78 Figure H.52.7 Special configuration fo
30、r 12 parallel single-core cables in a flat plane (see 523.7) .78 Figure H.52.8 Special configuration for 12 parallel single-core cables above each other (see 523.7) 78 Figure H.52.9 Special configuration for 12 parallel single-core cables in trefoil (see 523.7) .78 Table 52.1 Maximum operating tempe
31、ratures for types of insulation 16 Table 52.2 Minimum cross-sectional area of conductors 19 Table A.52.1 Methods of installation in relation to conductors and cables 25 Table A.52.2 Erection of wiring systems.26 Table A.52.3 Examples of methods of installation providing instructions for obtaining cu
32、rrent-carrying capacity 27 Table B.52.1 Schedule of reference methods of installation which form the basis of the tabulated current-carrying capacities.39 Table B.52.2 Current-carrying capacities in amperes for methods of installation in Table B.52.1 PVC insulation/two loaded conductors, copper or a
33、luminium Conductor temperature: 70 C, ambient temperature: 30 C in air, 20 C in ground.41 4 60364-5-52 IEC:2009 Table B.52.3 Current-carrying capacities in amperes for methods of installation in Table B.52.1 XLPE or EPR insulation, two loaded conductors/copper or aluminium Conductor temperature: 90
34、C, ambient temperature: 30 C in air, 20 C in ground.42 Table B.52.4 Current-carrying capacities in amperes for methods of installation in Table B.52.1 PVC insulation, three loaded conductors/copper or aluminium Conductor temperature: 70 C, ambient temperature: 30 C in air, 20 C in ground.43 Table B.
35、52.5 Current-carrying capacities in amperes for methods of installation in Table B.52.1 XLPE or EPR insulation, three loaded conductors/copper or aluminium Conductor temperature: 90 C, ambient temperature: 30 C in air, 20 C in ground.44 Table B.52.6 Current-carrying capacities in amperes for install
36、ation method C of Table B.52.1 Mineral insulation, copper conductors and sheath PVC covered or bare exposed to touch (see note 2) Metallic sheath temperature: 70 C, reference ambient temperature: 30 C 45 Table B.52.7 Current-carrying capacities in amperes for installation method C of Table B.52.1 Mi
37、neral insulation, copper conductors and sheath Bare cable not exposed to touch and not in contact with combustible material Metallic sheath temperature: 105 C, reference ambient temperature: 30 C .46 Table B.52.8 Current-carrying capacities in amperes for installation methods E, F and G of Table B.5
38、2.1 Mineral insulation, copper conductors and sheath/PVC covered or bare exposed to touch (see note 2) Metallic sheath temperature: 70 C, reference ambient temperature: 30 C 47 Table B.52.9 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 Mineral insulation,
39、 copper conductors and sheath Bare cable not exposed to touch (see note 2) Metallic sheath temperature: 105 C, reference ambient temperature: 30 C 48 Table B.52.10 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 PVC insulation, copper conductors Conductor t
40、emperature: 70 C, reference ambient temperature: 30 C49 Table B.52.11 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 PVC insulation, aluminium conductors Conductor temperature: 70 C, reference ambient temperature: 30 C.50 Table B.52.12 Current-carrying cap
41、acities in amperes for installation methods E, F and G of Table B.52.1 XLPE or EPR insulation, copper conductors Conductor temperature: 90 C, reference ambient temperature: 30 C.51 Table B.52.13 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 XLPE or EPR in
42、sulation. aluminium conductors Conductor temperature: 90 C, reference ambient temperature: 30 C.52 Table B.52.14 Correction factor for ambient air temperatures other than 30 C to be applied to the current-carrying capacities for cables in the air.53 Table B.52.15 Correction factors for ambient groun
43、d temperatures other than 20 C to be applied to the current-carrying capacities for cables in ducts in the ground 54 Table B.52.16 Correction factors for cables buried direct in the ground or in buried ducts for soil thermal resistivities other than 2,5 Km/W to be applied to the current-carrying cap
44、acities for reference method D .54 Table B.52.17 Reduction factors for one circuit or one multi-core cable or for a group of more than one circuit, or more than one multi-core cable, to be used with current-carrying capacities of Tables B.52.2 to B.52.13 55 Table B.52.18 Reduction factors for more t
45、han one circuit, cables laid directly in the ground Installation method D2 in Tables B.52.2 to B.52.5 Single-core or multi-core cables.56 Table B.52.19 Reduction factors for more than one circuit, cables laid in ducts in the ground Installation method D1 in Tables B.52.2 to B.52.5 57 60364-5-52 IEC:
46、2009 5 Table B.52.20 Reduction factors for group of more than one multi-core cable to be applied to reference current-carrying capacities for multi-core cables in free air Method of installation E in Tables B.52.8 to B.52.13 .59 Table B.52.21 Reduction factors for groups of one or more circuits of s
47、ingle-core cables to be applied to reference current-carrying capacity for one circuit of single-core cables in free air Method of installation F in Tables B.52.8 to B.52.1361 Table C.52.1 Current-carrying capacity in amperes64 Table C.52.2 Current-carrying capacities in amperes .65 Table C.52.3 Red
48、uction factors for groups of several circuits or of several multi-core cables (to be used with current-carrying capacities of Table C.52.1) .66 Table D.52.1 Table of coefficients and exponents 68 Table E.52.1 Reduction factors for harmonic currents in four-core and five-core cables.72 Table F.52.1 Suggested characteristics for conduit (classification according to IEC 61386) .73 Table G.52.1 Voltage drop .74 6 60364-5-52 IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LOW-VOLTAGE ELECTRICAL INSTALLATIONS Part 5-52: Selection and erection of electri
