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eLibrary >
S+ IEC 60364-7-712 Ed. 2.0 en:2017 (Redline version) Low voltage electrical installations - Part 7-712: Requirements for special installations or locations - Solar photovoltaic (PV) power supply systems >
S+ IEC 60364-7-712 Ed. 2.0 en:2017 (Redline version) Low voltage electrical installations - Part 7-712: Requirements for special installations or locations - Solar photovoltaic (PV) power supply systems, 2017
- Redline version (English only) [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION
- 712 Solar photovoltaic (PV) power supply installations [Go to Page]
- 712.1 Scope
- 712.2 Normative references
- 712.3 Terms and definitions
- 712.31 Purposes, supplies and structure
- 712.4 Protection for safety
- 712.41 Protection against electric shock
- 712.410 Introduction
- 712.412 Protective measure: double or reinforced insulation
- 712.414 Protective measure: extra-low-voltage provided by SELV and PELV
- 712.42 Protection against thermal effects
- 712.421 Protection against fire caused by electrical equipment
- 712.43 Protection against overcurrent
- 712.432 Nature of protective devices
- 712.433 Protection against overload current
- 712.434 Protection against short-circuit currents
- 712.44 Protection against voltage disturbances and electromagnetic disturbances
- 712.443 Protection against transient overvoltages of atmospheric origin or due to switching
- 712.444 Measures against electromagnetic influences
- 712.5 Selection and erection of electrical equipment
- 712.51 Common rules
- 712.511 Compliance with standards
- 712.512 Operational conditions and external influences
- 712.513 Accessibility
- 712.514 Identification
- 712.515 Prevention of mutual detrimental influence
- 712.52 Wiring systems
- 712.521 Types of wiring systems
- 712.522 Selection and erection of wiring systems in relation to external influences
- 712.523 Current-carrying capacities
- 712.524 Cross-sectional areas of conductors
- 712.525 Voltage drop in consumers installations
- 712.526 Electrical connections
- 712.527 Selection and erection of wiring systems to minimize spread of fire
- 712.528 Proximity of wiring systems to other services
- 712.529 Selection and erection of wiring systems in relation to maintainability, including cleaning
- 712.53 Isolation, switching and control
- 712.531 Devices for protection against indirect contact (fault protection) by automatic disconnection of supply
- 712.532 Devices for protection against thermal effects
- 712.533 Devices for protection against overcurrent
- 712.534 Devices for protection against transient overvoltages
- 712.536 Isolation and switching
- 712.54 Earthing arrangements and protective conductors
- 712.542 Earthing arrangements
- 712.55 Other equipment
- 712.6 Inspection and testing
- Annexes [Go to Page]
- Annex A (informative) PV installation information
- Annex B (normative) Calculation of UOC MAX and ISC MAX
- Annex C (informative) Examples of signs
- Annex D (informative) Blocking diode
- Annex E (informative) Arc fault detection and interruption in PV arrays
- Annex F (informative) List of notes concerning certain countries
- Bibliography
- Figures [Go to Page]
- Figure 712.1 – General functional configuration of a PV installation
- Figure 712.2 – PV array diagram – single string case
- Figure 712.3 – PV array diagram – multiple parallel string case
- Figure 712.4 – PV array diagram – multiple parallel string case with array divided into subarrays
- Figure 712.5 – PV array using a PCE with multiple MPPT DC inputs
- Figure 712.6 – PV array using a PCE with multiple DC inputs internally connected to a common DC bus
- Figure 712.7 – Example of a PV array diagram where strings are grouped under one overload protective device per group
- Figure 712.8 – Example of an indication showing the presence of a photovoltaic installation on a building
- Figure 712.9 – Examples of cables with reinforced protection
- Figure 712.10 – PV string wiring with minimum loop area
- Figure A.712.1 – Single string PV array
- Figure A.712.2 – Parallel connected multi-string PV array
- Figure A.712.3 – Unearthed PV array connected to the AC side via a PCE with transformer
- Figure A.712.4 – Unearthed PV array connected to the AC side via a PCE without a transformer
- Figure A.721.5 – Earthed PV array connected to the AC side via a PCE with transformer
- Figure A.712.6 –Earthed PV array connected to the AC side via a PCE without a transformer, the transformer being separate
- Figure C.712.1 – Example of sign required on PV array combiner boxes (712.514.102)
- Figure C.712.2 – Example of switchboard sign for identification of PV on a building
- Figure D.712.1 – Effect of blocking diode at short circuit in PV string
- Figure D.712.2 – Effect of blocking diode where there is an insulation fault on a PV installation with earthing on the DC negative side
- Figure D.712.3 – Effect of blocking diode where there is a fault on a PV installation with earthing on the DC positive side
- Figure E.712.1 – Examples of types of arcs in PV arrays
- Tables [Go to Page]
- Table 712.1 – Calculation of the critical length Lcrit
- Table 712.2 – Minimum current rating of circuits
- Table 712.3 – Requirements for different system types based on PCE isolation and PV array functional earthing
- Table 712.4 – Minimum insulation resistance thresholds for detection of failure of insulation to earth
- Table 712.5 – Response time limits for sudden changes in residual current
- Table 712.6 – Rated current of automatic disconnecting device in the functional earthing conductor
- Table 712.7 – Impulse withstand voltage Uw where no information is available
- Table 712.8 – Disconnection device requirements in PV array installations
- Table A.712.1 – PV DC configurations
- International standard (Bilingual) [Go to Page]
- English [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION
- 712 Solar photovoltaic (PV) power supply installations [Go to Page]
- 712.1 Scope
- 712.2 Normative references
- 712.3 Terms and definitions
- 712.31 Purposes, supplies and structure
- 712.4 Protection for safety
- 712.41 Protection against electric shock
- 712.410 Introduction
- 712.412 Protective measure: double or reinforced insulation
- 712.414 Protective measure: extra-low-voltage provided by SELV and PELV
- 712.42 Protection against thermal effects
- 712.421 Protection against fire caused by electrical equipment
- 712.43 Protection against overcurrent
- 712.432 Nature of protective devices
- 712.433 Protection against overload current
- 712.434 Protection against short-circuit currents
- 712.44 Protection against voltage disturbances and electromagnetic disturbances
- 712.443 Protection against transient overvoltages of atmospheric origin or due to switching
- 712.443.5 Risk assessment method
- 712.444 Measures against electromagnetic influences
- 712.444.5 Earthing and equipotential bonding
- 712.5 Selection and erection of electrical equipment
- 712.51 Common rules
- 712.511 Compliance with standards
- 712.512 Operational conditions and external influences
- 712.513 Accessibility
- 712.514 Identification
- 712.515 Prevention of mutual detrimental influence
- 712.52 Wiring systems
- 712.521 Types of wiring systems
- 712.522 Selection and erection of wiring systems in relation to external influences
- 712.523 Current-carrying capacities
- 712.524 Cross-sectional areas of conductors
- 712.525 Voltage drop in consumers installations
- 712.526 Electrical connections
- 712.527 Selection and erection of wiring systems to minimize spread of fire
- 712.528 Proximity of wiring systems to other services
- 712.529 Selection and erection of wiring systems in relation to maintainability, including cleaning
- 712.53 Isolation, switching and control
- 712.531 Devices for protection against indirect contact (fault protection) by automatic disconnection of supply
- 712.532 Devices for protection against thermal effects
- 712.533 Devices for protection against overcurrent
- 712.534 Devices for protection against transient overvoltages
- 712.536 Isolation and switching
- 712.54 Earthing arrangements and protective conductors
- 712.542 Earthing arrangements
- 712.55 Other equipment
- 712.6 Inspection and testing
- Annexes [Go to Page]
- Annex A (informative) PV installation information
- Annex B (normative) Calculation of UOC MAX and ISC MAX
- Annex C (informative) Examples of signs
- Annex D (informative) Blocking diode
- Annex E (informative) Arc fault detection and interruption in PV arrays
- Annex F (informative) List of notes concerning certain countries
- Bibliography
- Figures [Go to Page]
- Figure 712.1 – General functional configuration of a PV installation
- Figure 712.2 – PV array diagram – single string case
- Figure 712.3 – PV array diagram – multiple parallel string case
- Figure 712.4 – PV array diagram – multiple parallel string case with array divided into subarrays
- Figure 712.5 – PV array using a PCE with multiple MPPT DC inputs
- Figure 712.6 – PV array using a PCE with multiple DC inputs internally connected to a common DC bus
- Figure 712.7 – Example of a PV array diagram where strings are grouped under one overload protective device per group
- Figure 712.8 – Example of an indication showing the presence of a photovoltaic installation on a building
- Figure 712.9 – Examples of cables with reinforced protection
- Figure 712.10 – PV string wiring with minimum loop area
- Figure A.712.1 – Single string PV array
- Figure A.712.2 – Parallel connected multi-string PV array
- Figure A.712.3 – Unearthed PV array connected to the AC side via a PCE with transformer
- Figure A.712.4 – Unearthed PV array connected to the AC side via a PCE without a transformer
- Figure A.721.5 – Earthed PV array connected to the AC side via a PCE with transformer
- Figure A.712.6 –Earthed PV array connected to the AC side via a PCE without a transformer, the transformer being separate
- Figure C.712.1 – Example of sign required on PV array combiner boxes (712.514.102)
- Figure C.712.2 – Example of switchboard sign for identification of PV on a building
- Figure D.712.1 – Effect of blocking diode at short circuit in PV string
- Figure D.712.2 – Effect of blocking diode where there is an insulation fault on a PV installation with earthing on the DC negative side
- Figure D.712.3 – Effect of blocking diode where there is a fault on a PV installation with earthing on the DC positive side
- Figure E.712.1 – Examples of types of arcs in PV arrays
- Tables [Go to Page]
- Table 712.1 – Calculation of the critical length Lcrit
- Table 712.2 – Minimum current rating of circuits
- Table 712.3 – Requirements for different system types based on PCE isolation and PV array functional earthing
- Table 712.4 – Minimum insulation resistance thresholds for detection of failure of insulation to earth
- Table 712.5 – Response time limits for sudden changes in residual current
- Table 712.6 – Rated current of automatic disconnecting device in the functional earthing conductor
- Table 712.7 – Impulse withstand voltage Uw where no information is available
- Table 712.8 – Disconnection device requirements in PV array installations
- Table A.712.1 – PV DC configurations
- Français [Go to Page]
- SOMMAIRE
- AVANT-PROPOS
- INTRODUCTION
- 712 Installations d'énergie solaire photovoltaïque (PV) [Go to Page]
- 712.1 Domaine d'application
- 712.2 Références normatives
- 712.3 Termes et définitions
- 712.31 Objet, alimentations et structure
- 712.4 Protection pour assurer la sécurité
- 712.41 Protection contre les chocs électriques
- 712.410 Introduction
- 712.412 Mesure de protection: isolation double ou renforcée
- 712.414 Protection par très basse tension (TBTS et TBTP)
- 712.42 Protection contre les effets thermiques
- 712.421 Protection contre l’incendie provoqué par un matériel électrique
- 712.43 Protection contre les surintensités
- 712.432 Nature des dispositifs de protection
- 712.433 Protection contre les courants de surcharge
- 712.434 Protection contre les courants de court-circuit
- 712.44 Protection contre les perturbations de tension et les perturbations électromagnétiques
- 712.443 Protection contre les surtensions transitoires d’origine atmosphérique ou dues à des manœuvres
- 712.444 Dispositions contre les perturbations électromagnétiques
- 712.5 Choix et mise en œuvre des matériels électriques
- 712.51 Règles communes
- 712.511 Conformité aux normes
- 712.512 Conditions de service et influences externes
- 712.513 Accessibilité
- 712.514 Identification
- 712.515 Indépendance des matériels
- 712.52 Canalisations
- 712.521 Types de canalisations
- 712.522 Choix et mise en oeuvre des canalisations en fonction des influences externes
- 712.523 Courants admissibles
- 712.524 Sections des conducteurs
- 712.525 Chute de tension dans les installations des consommateurs
- 712.526 Connexions électriques
- 712.527 Choix et mise en œuvre des canalisations pour limiter la propagation du feu
- 712.528 Voisinage avec d'autres canalisations
- 712.529 Choix et mise en œuvre des canalisations en fonction de la maintenance, y compris le nettoyage
- 712.53 Sectionnement, coupure et commande
- 712.531 Dispositifs de protection contre les contacts indirects (défauts) par coupure automatique de l'alimentation
- 712.532 Dispositifs de protection contre les effets thermiques
- 712.533 Dispositifs de protection contre les surintensités
- 712.534 Dispositifs de protection contre les surtensions transitoires
- 712.536 Sectionnement et coupure
- 712.54 Installations de mise à la terre et conducteurs de protection
- 712.542 Installations de mise à la terre
- 712.55 Autres matériels
- 712.6 Inspection et essais
- Annexes [Go to Page]
- Annexe A (informative) Informations relatives aux installations PV
- Annexe B (normative) Calcul de UOC MAX and ISC MAX
- Annexe C (informative) Exemples d’étiquettes
- Annexe D (informative) Diode antiretour
- Annexe E (informative) Détection et interruption de défaut d'arc dans les groupes PV
- Annexe F (informative) Liste des notes concernant certains pays
- Bibliographie
- Figures [Go to Page]
- Figure 712.1 – Configuration fonctionnelle générale d'une installation PV
- Figure 712.2 – Schéma d'un groupe PV – cas d'une chaîne unique
- Figure 712.3 – Schéma d'un groupe PV – cas de plusieurs chaînes en parallèle
- Figure 712.4 – Schéma d'un groupe PV – cas de plusieurs chaînes en parallèle avec groupe divisé en sous-groupes
- Figure 712.5 – Groupe PV qui utilise un PCE avec plusieurs entrées en courant continu MPPT
- Figure 712.6 – Groupe PV qui utilise un PCE avec plusieurs entrées en courant continu connectées en interne à un bus commun en courant continu
- Figure 712.7 – Exemple de schéma de groupe PV dans lequel les chaînes sont raccordées sous un dispositif de protection contre les surcharges par groupe
- Figure 712.8 – Exemple d'étiquette indiquant la présence d'une installation photovoltaïque sur un bâtiment
- Figure 712.9 – Exemples de câbles avec une protection renforcée
- Figure 712.10 – Câblage de chaîne PV avec surface de boucle minimale
- Figure A.712.1 – Groupe PV à une seule chaîne
- Figure A.712.2 – Groupe PV à plusieurs chaînes connectées en parallèle
- Figure A.712.3 – Groupe PV non relié à la terre, connectédu côté courant alternatif via un PCE avec transformateur
- Figure A.712.4 – Groupe PV non relié à la terre, connectédu côté courant alternatif via un PCE sans transformateur
- Figure A.721.5 – Groupe PV relié à la terre, connecté du côté courant alternatif via un PCE avec transformateur
- Figure A.712.6 – Groupe PV relié à la terre, connecté du côté courant alternatif via un PCE sans transformateur, le transformateur étant séparé
- Figure C.712.1 – Exemple d’étiquette exigée sur les coffrets de regroupement de groupes PV (712.514.102)
- Figure C.712.2 – Exemple d’étiquette de tableau de distribution pour l'identification d'une installation PV sur un bâtiment
- Figure D.712.1 – Effet d'une diode antiretour au niveau d'un court-circuit dans une chaîne PV
- Figure D.712.2 – Effet d'une diode antiretour en cas de défaut d'isolement sur une installation PV avec mise à la terre du côté courant continu négatif
- Figure D.712.3 – Effet d'une diode antiretour en cas de défaut sur une installation PV avec mise à la terre du côté courant continu positif
- Figure E.712.1 – Exemples de types d'arcs dans des groupes PV
- Tableaux [Go to Page]
- Tableau 712.1 – Calcul de la longueur critique Lcrit
- Tableau 712.2 – Courant assigné minimal des circuits
- Tableau 712.3 – Exigences pour les différents typesde systèmes en fonction de l'isolement du PCE et de la mise à la terre du groupe PV pour des raisons fonctionnelles
- Tableau 712.4 – Seuils minimaux de résistance d'isolement pour la détection des défaillances d'isolation par rapport à la terre
- Tableau 712.5 – Limites de temps de réponse pour les variations brusques de courant différentiel résiduel
- Tableau 712.6 – Courant assigné du dispositif de coupure automatique du conducteur de mise à la terre fonctionnelle
- Tableau 712.7 – Tension de tenue aux chocs Uw en l’absence d’information
- Tableau 712.8 – Exigences applicables aux dispositifs de sectionnement dans les installations de groupe PV
- Tableau A.712.1 – Configurations en courant continu des systèmes PV [Go to Page]
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