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eLibrary >
S+ IEC 61921 Ed. 2.0 en:2017 (Redline version) Power capacitors - Low-voltage power factor correction banks >
S+ IEC 61921 Ed. 2.0 en:2017 (Redline version) Power capacitors - Low-voltage power factor correction banks, 2017
- Redline version (English only) [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Marking of a capacitor bank
- 5 Service conditions
- 6 Guide for design, installation, operation and safety [Go to Page]
- 6.1 General
- 6.2 Design [Go to Page]
- 6.2.1 Choice of rated voltage
- 6.2.2 Switching and overload protection
- 6.3 Installation and operation [Go to Page]
- 6.3.1 Electrical environment
- 6.3.2 Secondary effects of the PFC system capacitor bank
- 6.3.3 Overvoltages
- 6.3.4 Overload currents
- 6.4 Safety [Go to Page]
- 6.4.1 Discharging devices
- 6.4.2 Discharging after disconnection
- 6.4.3 Fire hazard in case of failure
- 6.4.4 Human and property damage
- 6.4.5 Busbar
- 6.4.6 Connection of systems
- 7 Design verification [Go to Page]
- 7.1 General
- 7.2 Strength of material and parts
- 7.3 Verification of degree of protection of enclosures
- 7.4 Verification of clearances and creepage distances
- 7.5 Protection against electric shock and integrity of protective circuits
- 7.6 Incorporation of switching devices and components
- 7.7 Internal electrical circuits and connections
- 7.8 Terminals for external conductors
- 7.9 Verification of dielectric properties
- 7.10 Verification of temperature-rise limits
- 7.11 Verification of short-circuit withstand strength
- 7.12 Electromagnetic compatibility
- 7.13 Verification of mechanical operation
- 8 Routine verification [Go to Page]
- 8.1 General
- 8.2 Degree of protection of enclosures
- 8.3 Clearances and creepage distances
- 8.4 Protection against electric shock and integrity of protective circuits
- 8.5 Incorporation of built-in components
- 8.6 Internal electrical circuits and connections
- 8.7 Terminals for external conductors
- 8.8 Mechanical operation
- 8.9 Dielectric properties
- 8.10 Wiring, operational performance and function, including verification of rated output
- Annexes [Go to Page]
- Annex A (normative) Minimum and maximum cross-sections of copper conductors suitable for connections
- Annex B (informative) Formulae for capacitors and installations [Go to Page]
- B.1 Computation of the output of three-phase capacitors from three single-phase capacitance measurements
- B.2 Resonance frequency
- B.3 Voltage rise
- B.4 Inrush transient current [Go to Page]
- B.4.1 Switching in of a single capacitor
- B.4.2 Switching of capacitors in parallel with energized capacitor(s)
- B.4.3 Discharge resistance in single-phase units or in one-phase or polyphase units
- Annex C (informative) Definition of similar designs for capacitor bank
- Annex D (informative) Methods for connecting additional capacitors for performing temperature rise test
- Bibliography
- Figure D.1 – Configurations for temperature rise test
- International standard (Bilingual) [Go to Page]
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Marking of a capacitor bank
- 5 Service conditions
- 6 Guide for design, installation, operation and safety [Go to Page]
- 6.1 General
- 6.2 Design [Go to Page]
- 6.2.1 Choice of rated voltage
- 6.2.2 Switching and overload protection
- 6.3 Installation and operation [Go to Page]
- 6.3.1 Electrical environment
- 6.3.2 Secondary effects of the capacitor bank
- 6.3.3 Overvoltages
- 6.3.4 Overload currents
- 6.4 Safety [Go to Page]
- 6.4.1 Discharging devices
- 6.4.2 Discharging after disconnection
- 6.4.3 Fire hazard in case of failure
- 6.4.4 Human and property damage
- 6.4.5 Busbar
- 6.4.6 Connection of systems
- 7 Design verification [Go to Page]
- 7.1 General
- 7.2 Strength of material and parts
- 7.3 Verification of degree of protection of enclosures
- 7.4 Verification of clearances and creepage distances
- 7.5 Protection against electric shock and integrity of protective circuits
- 7.6 Incorporation of switching devices and components
- 7.7 Internal electrical circuits and connections
- 7.8 Terminals for external conductors
- 7.9 Verification of dielectric properties
- 7.10 Verification of temperature-rise limits
- 7.11 Verification of short-circuit withstand strength
- 7.12 Electromagnetic compatibility
- 7.13 Verification of mechanical operation
- 8 Routine verification [Go to Page]
- 8.1 General
- 8.2 Degree of protection of enclosures
- 8.3 Clearances and creepage distances
- 8.4 Protection against electric shock and integrity of protective circuits
- 8.5 Incorporation of built-in components
- 8.6 Internal electrical circuits and connections
- 8.7 Terminals for external conductors
- 8.8 Mechanical operation
- 8.9 Dielectric properties
- 8.10 Wiring, operational performance and function, including verification of rated output
- Annexes [Go to Page]
- Annex A (normative) Minimum and maximum cross-sections of copper conductors suitable for connections
- Annex B (informative) Formulae for capacitors and installations [Go to Page]
- B.1 Computation of the output of three-phase capacitors from three single-phase capacitance measurements
- B.2 Resonance frequency
- B.3 Voltage rise
- B.4 Inrush transient current [Go to Page]
- B.4.1 Switching in of a single capacitor
- B.4.2 Switching of capacitors in parallel with energized capacitor(s)
- B.4.3 Discharge resistance in single-phase units or in one-phase or polyphase units
- Annex C (informative) Definition of similar designs for capacitor bank
- Annex D (informative) Methods for connecting additional capacitors for performing temperature rise test
- Bibliography
- Figure D.1 – Configurations for temperature rise test
- Français [Go to Page]
- SOMMAIRE
- AVANT-PROPOS
- 1 Domaine d'application
- 2 Références normatives
- 3 Termes et définitions
- 4 Marquage d'une batterie de condensateurs
- 5 Conditions d’emploi
- 6 Guide de conception, d’installation, d’exploitation et de sécurité [Go to Page]
- 6.1 Généralités
- 6.2 Conception [Go to Page]
- 6.2.1 Choix de la tension assignée
- 6.2.2 Connexion et protection contre la surcharge
- 6.3 Installation et exploitation [Go to Page]
- 6.3.1 Environnement électrique
- 6.3.2 Effets secondaires de la batterie de condensateurs
- 6.3.3 Surtensions
- 6.3.4 Courants de surcharge
- 6.4 Sécurité [Go to Page]
- 6.4.1 Dispositifs de décharge
- 6.4.2 Décharge après déconnexion
- 6.4.3 Danger de feu en cas de défaillance
- 6.4.4 Dommages aux personnes et aux biens
- 6.4.5 Jeu de barres
- 6.4.6 Raccordement des réseaux
- 7 Vérification de la conception [Go to Page]
- 7.1 Généralités
- 7.2 Résistance des matériaux et des parties
- 7.3 Vérification du degré de protection des enveloppes
- 7.4 Vérification des distances d'isolement et des lignes de fuite
- 7.5 Protection contre les chocs électriques et intégrité des circuits de protection
- 7.6 Intégration des appareils de connexion et des composants
- 7.7 Circuits électriques internes et connexions
- 7.8 Bornes pour conducteurs externes
- 7.9 Vérification des propriétés diélectriques
- 7.10 Vérification des limites d’échauffement
- 7.11 Vérification de la tenue aux courts-circuits
- 7.12 Compatibilité électromagnétique
- 7.13 Vérification du fonctionnement mécanique
- 8 Vérification individuelle systématique [Go to Page]
- 8.1 Généralités
- 8.2 Degré de protection procuré par les enveloppes
- 8.3 Distances d'isolement et lignes de fuite
- 8.4 Protection contre les chocs électriques et intégrité des circuits de protection
- 8.5 Intégration de composants incorporés
- 8.6 Circuits électriques internes et connexions
- 8.7 Bornes pour conducteurs externes
- 8.8 Fonctionnement mécanique
- 8.9 Propriétés diélectriques
- 8.10 Câblage, performance et fonctionnement opérationnels, y compris vérification de la puissance assignée
- Annexes [Go to Page]
- Annexe A (normative) Sections minimale et maximale des conducteurs de cuivre convenant aux raccordements
- Annexe B (informative) Formules pour les condensateurs et les installations [Go to Page]
- B.1 Calcul de la puissance de condensateurs triphasés à partir de trois mesurages de capacités monophasées
- B.2 Fréquence de résonance
- B.3 Élévation de la tension
- B.4 Courant d'appel transitoire [Go to Page]
- B.4.1 Mise sous tension d'un seul condensateur
- B.4.2 Connexion de condensateurs en parallèle avec un/des condensateur(s) sous tension
- B.4.3 Résistance de décharge dans des condensateurs monophasés ou dans une phase de condensateurs polyphasés
- Annexe C (informative) Définition de conceptions analogues pour les batteries de condensateurs
- Annexe D (informative) Modes de connexion de condensateurs supplémentaires pour l'essai d'échauffement
- Bibliographie
- Figure D.1 – Configurations pour l’essai d'échauffement [Go to Page]
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