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IEC 60730-2-23 Ed. 1.0 en:2025 EXV Automatic electrical controls - Part 2-23: Particular requirements for electrical sensors and sensing elements, 2025
- Extended version (English only) [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions [Go to Page]
- 3.1 Definitions relating to ratings, voltages, currents, frequencies, and wattages
- 3.2 Definitions of types of control according to purpose
- 3.3 Definitions relating to the function of controls
- 3.4 Definitions relating to disconnection and interruption
- 3.5 Definitions of types of control according to construction
- 3.6 Definitions of type of automatic action of a control
- 3.7 Definitions relating to protection against electric shock and type of insulation
- 3.8 Definitions relating to component parts of controls
- 3.9 Definitions of types of terminals and terminations of controls
- 3.10 Definitions relating to the connections to controls
- 3.11 Definitions relating to the performance of type 2 actions
- 3.12 Definitions relating to the requirements for creepage distances and clearances
- 3.13 Miscellaneous definitions
- 3.14 Definitions relating to manufacturer and user
- 3.15 Definitions pertaining to thermistors
- 3.16 Definitions relating to the structure of controls using software
- 3.17 Definitions relating to error avoidance in controls using software
- 3.18 Definitions relating to fault/error control techniques for controls using software
- 3.19 Definitions relating to memory tests for controls using software
- 3.20 Definitions of software terminology – General
- 3.21 Definitions relating to classes of control functions
- 3.22 Definitions relating to functional safety
- 3.23 Definitions related to access to data exchange
- 3.24 Definitions related to EMC performance
- 3.101 Definitions relating to resistance temperature detector (RTD) sensors
- 4 General [Go to Page]
- 4.1 General structure of the document
- 4.2 General requirements
- 4.3 General notes on tests
- 5 Required technical information [Go to Page]
- 5.1 General requirements
- 5.2 Methods of providing technical information
- 5.3 Class II symbol
- 5.4 Additional requirements for marking
- 5.5 Warning or cautionary markings
- 6 Protection against electric shock [Go to Page]
- 6.1 General requirements
- 6.2 Actuating members and actuating means
- 6.3 Capacitors
- 6.4 Covers and uninsulated live or hazardous parts
- 6.5 Battery operated controls provided with a user accessible mains supply input connector
- 7 Provision for protective earthing [Go to Page]
- 7.1 Class 0I and Class I controls
- 7.2 Class II and class III controls
- 7.3 Adequacy of earth connections
- 7.4 Corrosion resistance
- 7.5 Other requirements
- 7.6 Protective equipotential bonding
- 8 Terminals and terminations [Go to Page]
- 8.1 Terminals and terminations for external copper conductors
- 8.2 Terminals and terminations for internal conductors
- 8.3 Terminals and terminations for integrated conductors
- 9 Constructional requirements [Go to Page]
- 9.1 Materials
- 9.2 Protection against electric shock
- 9.3 Actuation and operation
- 9.4 Actions
- 9.5 Openings in enclosures
- 9.6 Mounting of controls
- 9.7 Attachment of cords
- 9.8 Size of cords – nondetachable
- 9.9 Inlet openings
- 9.10 Equipment inlets and socketoutlets
- 9.11 Requirements during mounting, use, maintenance and servicing
- 9.12 Controls using software
- 9.13 Protective controls and components of protective control systems
- 10 Threaded parts and connections [Go to Page]
- 10.1 Threaded parts moved during mounting or servicing
- 10.2 Currentcarrying connections and connections providing protective earthing continuity
- 11 Creepage distances, clearances and distances through solid insulation [Go to Page]
- 11.1 General
- 11.2 Clearances
- 11.3 Creepage distances
- 11.4 Solid insulation
- 12 Components [Go to Page]
- 12.1 Transformers
- 12.2 Switch mode power supplies and converters
- 12.3 Capacitors
- 12.4 Fuses
- 12.5 Varistors
- 12.6 Thermistors
- 12.7 Relays
- 12.8 Other components
- 13 Fault assessment on electronic circuits [Go to Page]
- 13.1 Fault assessment for inherent safety
- 13.2 Fault assessment to ensure functional safety
- 14 Moisture and dust resistance [Go to Page]
- 14.1 Protection against ingress of water and dust
- 14.2 Protection against humid conditions
- 14.3 Touch current test for in-line cord controls and free-standing controls
- 15 Electric strength and insulation resistance [Go to Page]
- 15.1 Insulation resistance
- 15.2 Electric strength
- 15.3 Additional tests for in-line cord and free-standing controls
- 16 Heating
- 17 Manufacturing deviation and drift
- 18 Environmental stress
- 19 Endurance [Go to Page]
- 19.101 Conditioning tests for sensors
- 20 Mechanical strength [Go to Page]
- 20.1 General requirements
- 20.2 Impact resistance
- 20.3 Freestanding controls
- 20.4 Inline cord controls
- 20.5 Pullcord actuated controls
- 20.6 Foot actuated controls
- 20.7 Actuating member and actuating means
- 20.8 Flexing – test
- 20.9 Cord anchorages – test
- 20.101 Drop test
- 21 Resistance to heat, fire and tracking [Go to Page]
- 21.1 General requirements
- 21.2 Integrated, incorporated and inline cord controls
- 21.3 Independently mounted, free-standing controls
- 22 Resistance to corrosion [Go to Page]
- 22.1 Resistance to rusting
- 23 Electromagnetic compatibility (EMC) requirements – Emission [Go to Page]
- 23.1 General requirement
- 23.2 High frequency emission
- 23.3 Low frequency emission
- 24 Normal operation
- 25 Electromagnetic compatibility (EMC) requirements – Immunity [Go to Page]
- 25.1 General
- 25.2 EMC test plan and report
- 25.3 Immunity requirements
- 25.4 Performance criteria
- 25.5 Surge immunity test
- 25.6 Electrical fast transient immunity test
- 25.7 Radio-frequency electromagnetic field immunity
- 25.8 Electrostatic discharge
- 25.9 Immunity to power-frequency magnetic fields
- 25.10 Test of the influence of voltage dips and voltage interruption in the power supply network
- 26 Abnormal operation tests
- Annexes [Go to Page]
- Annex A (normative) Indelibility of markings
- Annex B (normative) Measurement of creepage distances and clearances in air
- Annex C (informative) Nominal voltages of supply systems for different modes of overvoltage control
- Annex D (normative) Overvoltage categories
- Annex E (informative) Typical usage of controls and related overvoltage categories
- Annex F (normative) Pollution degrees
- Annex G (normative) Resistance to heat, fire and tracking tests
- Annex H (normative) Requirements related to functional safety
- Annex I (normative) Requirements for certain types of DC supplied controls
- Annex J (normative) Requirements for thermistor elements and controls using thermistors
- Annex K (normative) Circuit for measuring touch current
- Annex L (normative) Printed circuit board coating performance test
- Annex M (normative) Printed circuit board protection
- Annex N (informative) Explanatory notes for surge immunity test
- Annex O (informative) Guidance for applying Clause 11
- Annex P (normative) Requirements for SELV and PELV
- Annex Q (informative) Regional differences relevant for the member countries of Cenelec
- Annex R (informative) National differences relevant in the United States of America
- Annex S (informative) National differences relevant in Japan
- Annex T (informative) National differences relevant in Canada
- Bibliography
- Figures [Go to Page]
- Figure 101 – Schematic diagram of a typical sensor
- Figure 1 – Example of ports
- Figure 2 – Structure of the document with respect to inherent safety and functional safety
- Figure 3 – Example of an electronic circuit with low power points
- Figure 4 – Test pin probe 13 of IEC 61032:1997
- Figure 5 – Test finger probe B of IEC 61032:1997
- Figure 6 – Test fingernail
- Figure 7 – Impact test for free-standing controls
- Figure 8 – Tumbling barrel
- Figure 9 – Apparatus for testing durability of markings on rating labels
- Figure 10 – Apparatus for flexing test
- Figure 11 – Screw terminals and stud terminals
- Figure 12 – Pillar terminals
- Figure 13 – Mantle terminals
- Figure 14 – Saddle and lug terminals
- Figure 15 – Tabs
- Figure 16 – Tabs for non-reversible connectors
- Figure 17 – Receptacles
- Figure 18 – Measurement of creepage distance and clearance
- Figure 19 – Diagram for touch current measurement at operating temperature for single-phase connection of class II controls
- Figure 20 – Diagram for touch current measurement at operating temperature for single-phase connection of controls other than class II
- Figure 21 – Diagram for touch current measurement at operating temperature for three-phase connection of class II controls
- Figure 22 – Diagram for touch current measurement at operating temperature for three-phase connection of controls other than class II
- Figure 23 – Diagram for touch current measurement at operating temperature for single-phase connection of controls to three-wire, ground neutral supply other than class II
- Figure 24 – Diagram for touch current measurement at operating temperature for two‑phase connection of controls to three-wire, ground neutral supply other than class II
- Figure B.1 – Narrow groove
- Figure B.2 – Wide groove
- Figure B.3 – V-shaped groove
- Figure B.4 – Rib
- Figure B.5 – Uncemented joint with narrow groove
- Figure B.6 – Uncemented joint with wide groove
- Figure B.7 – Uncemented joint with narrow and wide grooves
- Figure B.8 – Diverging side walls
- Figure B.9 – Narrow recess
- Figure B.10 – Wide recess
- Figure B.11 – Conductive floating part
- Figure H.1 – V-Model for the software life cycle
- Figure H.101 – Typical flammable vapor sensor test chamber (side view external wall)
- Figure H.102 – Typical flammable vapor sensor test chamber (side view internal cutout)
- Figure H.103 – Typical flammable vapor sensor test chamber (top view)
- Figure H.2 – Voltage variation test
- Figure J.1 – Generic test circuit for inrush-current limiting thermistor endurance test
- Figure K.1 – Circuit for measuring touch currents
- Figure L.1 – Test sample
- Figure M.1 – Example of type 1 protection
- Figure M.2 – Example of type 2 protection
- Figure N.1 – Example of surge protection by shielding in buildings with common earth reference systems
- Figure N.2 – Example of secondary surge protection in buildings with separate common earth reference systems
- Figure N.3 – Example of primary and secondary surge protection of indoor/outdoor equipment
- Figure O.1 – Guidance flowchart for application of requirements of Clause 11
- Tables [Go to Page]
- Table 101 – Samples and test sequence for sensors
- Table 102 – Electrical and thermal ratings of a sensor
- Table 1 – Required technical information and methods of providing these information
- Table 2 – Cross-sectional area of conductors
- Table 3 – Terminal conductors
- Table 4 – Conductor pull test values
- Table 5 – Nominal cross-sectional areas of conductors
- Table 6 – Axial force values for tab insertion and withdrawal
- Table 7 – Minimum cord conductor sizes
- Table 8 – Data exchange
- Table 9 – Threaded parts torque test values
- Table 10 – Rated impulse voltage for equipment energized directly from the supply mains (from IEC 60664-1:2007, Table F.1)
- Table 11 – Clearances for insulation co-ordination (from IEC 606641:2007, Table F.2)
- Table 12 – Minimum creepage distances for basic insulation
- Table 13 – Minimum creepage distances for functional insulation
- Table 14 – Electrical/electronic component fault modes
- Table 15 – Minimum insulation resistance
- Table 16 – Insulation or disconnection test voltages
- Table 17 – Maximum heating temperatures
- Table 103 – Number of cycles for endurance test
- Table 22 – Pull and torque values
- Table 23 – Emission limit for residential electromagnetic environment
- Table 24 – Emission limit for industrial electromagnetic environment
- Table 25 – The applicable EMC test in relation to the class of control function and type of Action
- Table 26 – Immunity test requirements for residential electromagnetic environments
- Table 27 – Immunity test requirements for industrial electromagnetic environment
- Table 28 – Performance criteria
- Table B.1 – Value of X
- Table C.1 – Inherent control or equivalent protective control
- Table C.2 – Cases where protective control is necessary and control is provided by surge arresters having a ratio of clamping voltage to rated voltage not smaller than that specified by IEC 60099-1
- Table E.1 – Typical usage
- Table H.1 – Additional items to Table 1
- Table H.2 – Acceptable measures to address fault/errors a
- Table H.3 – Examples of techniques/measures for semi-formal methods
- Table H.4 – Examples of techniques/measures for software architecture specification
- Table H.5 – Examples of techniques/measures for module design specification
- Table H.6 – Examples of techniques/measures for design and coding standards
- Table H.7 – Examples of techniques/measures for software module testing
- Table H.8 – Examples of techniques/measures for software integration testing
- Table H.9 – Examples of techniques/measures for software safety validation
- Table H.10 – Combinations of analytical measures during hardware development
- Table H.11 – Examples of defences against unauthorised access and transmission failure modes
- Table H.101 – Calibration tests and compliance criteria for sensors
- Table H.102 – Calibration classes for sensors
- Table H.103 – Temperature/relative humidity conditions
- Table H.104 – Specifications for vapour measurement test equipment
- Table H.105 – Specifications for vapour measurement test chamber
- Table H.12 – Applicable test levels in addition to Clause 25
- Table H.13 – Voltage dips, short interruptions and voltage variations
- Table H.14 – Test values for voltage variations
- Table H.15 – Test voltages for test level 2 (depending on the installation class conditions)
- Table H.16 – Test level for electrical fast transient burst test
- Table H.17 – Test levels for conducted disturbances on mains and I/O lines
- Table H.18 – Test level for immunity to radiated electromagnetic fields
- Table H.19 – Increased test level for radiated immunity
- Table H.20 – Test level for supply frequency variations
- Table H.21 – Test level for continuous fields
- Table I.1 – Electrical transient conduction immunity in accordance with ISO 7637-2
- Table I.2 – Electrical transient conduction immunity in accordance with ISO 7637-3
- Table J.1 – Maximum current
- Table J.2 – Normal operating conditions
- Table J.3 – Samples for the test (clause reference)
- Table J.4 – Electrical and thermal ratings of a thermistor
- Table J.5 – Additional items to Table 1
- Table J.6 – Sequence of calibration and conditioning tests for PTC thermistors
- Table J.7 – Classes for PTC sensing thermistors
- Table J.8 – Sequence of calibration and conditioning tests for NTC thermistors
- Table J.9 – Classes for NTC sensing thermistors
- Table J.10 – Number of cycles for endurance test
- Table J.11 – Ageing test temperature
- Table J.12 – Number of cycles for endurance test
- Table L.1 – Environmental cycling conditions
- Table M.1 – IEC 60664-3 test levels or conditions
- Table O.1 – Example A – Using Annex O guidance for applying Clause 11
- Table O.2 – Example B – Using Annex O guidance for applying Clause 11
- Table Q.1 – Additional aging parameters for windings
- International Standard (Bilingual) [Go to Page]
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General
- 5 Required technical information
- 6 Protection against electric shock
- 7 Provision for protective earthing
- 8 Terminals and terminations
- 9 Constructional requirements
- 10 Threaded parts and connections
- 11 Creepage distances, clearances and distances through solid insulation
- 12 Components
- 13 Fault assessment on electronic circuits
- 14 Moisture and dust resistance
- 15 Electric strength and insulation resistance
- 16 Heating
- 17 Manufacturing deviation and drift
- 18 Environmental stress
- 19 Endurance
- 20 Mechanical strength
- 21 Resistance to heat, fire and tracking
- 22 Resistance to corrosion
- 23 Electromagnetic compatibility (EMC) requirements – Emission
- 24 Normal operation
- 25 Electromagnetic compatibility (EMC) requirements – Immunity
- 26 Abnormal operation tests
- Annex H (normative) Requirements related to functional safety
- Annex J (normative) Requirements for thermistor elements and controls using thermistors
- Bibliography
- Tables [Go to Page]
- Table 101 – Samples and test sequence for sensors
- Table 102 – Electrical and thermal ratings of a sensor
- Table 1 – Required technical information and methodsof providing these information
- Table 103 – Number of cycles for endurance test
- Table H.101 – Calibration tests and compliance criteria for sensors
- Table H.102 – Calibration classes for sensors
- Table H.103 – Temperature/relative humidity conditions
- Table H.104 – Specifications for vapour measurement test equipment
- Table H.105 – Specifications for vapour measurement test chamber
- Figures [Go to Page]
- Figure 101 – Schematic diagram of a typical sensor
- Figure H.101 – Typical flammable vapor sensor test chamber (side view external wall)
- Figure H.102 – Typical flammable vapor sensor test chamber (side view internal cutout)
- Figure H.103 – Typical flammable vapor sensor test chamber(top view)
- Français [Go to Page]
- SOMMAIRE
- AVANT-PROPOS
- 1 Domaine d'application
- 2 Références normatives
- 3 Termes et définitions
- 4 Généralités
- 5 Informations techniques exigées
- 6 Protection contre les chocs électriques
- 7 Dispositions en vue de la mise à la terre de protection
- 8 Bornes et connexions
- 9 Exigences de construction
- 10 Parties filetées et connexions
- 11 Lignes de fuite, distances dans l'air et distances à travers l'isolation solide
- 12 Éléments constituants
- 13 Évaluation des pannes sur les circuits électroniques
- 14 Résistance à l'humidité et à la poussière
- 15 Résistance d'isolement et rigidité diélectrique
- 16 Échauffements
- 17 Tolérances de fabrication et dérive
- 18 Contraintes climatiques
- 19 Endurance
- 20 Résistance mécanique
- 21 Résistance à la chaleur, au feu et aux courants de cheminement
- 22 Résistance à la corrosion
- 23 Exigences de compatibilité électromagnétique (CEM) – Émission
- 24 Fonctionnement normal
- 25 Exigences de compatibilité électromagnétique (CEM) – Immunité
- 26 Essais en fonctionnement anormal
- Annexe H (normative) Exigences relatives à la sécurité fonctionnelle
- Annexe J (normative) Exigences pour éléments de thermistance et dispositifs de commande utilisant des thermistances
- Bibliographie
- Figures [Go to Page]
- Figure 101 – Schéma d'un capteur type
- Figure H.101 – Chambre d'essai type pour les essais des capteurs de vapeur inflammable (vue latérale de la paroi externe)
- Figure H.102 – Chambre d'essai type pour les essais des capteurs de vapeur inflammable (coupe interne en vue latérale)
- Figure H.103 – Chambre d'essai type pour les essais des capteurs de vapeur inflammable (vue de dessus)
- Tableaux [Go to Page]
- Tableau 101 – Échantillons et séquence d'essai des capteurs
- Tableau 102 – Caractéristiques assignées électriques et thermiques d'un capteur
- Tableau 1 – Informations techniques exigées et méthodes pour fournir ces informations
- Tableau 103 – Nombre de cycles pour l'essai d'endurance
- Tableau H.101 – Essais d'étalonnage et critères de conformité pour les capteurs
- Tableau H.102 – Classes d'étalonnage pour les capteurs
- Tableau H.103 – Conditions de température/d'humidité relative
- Tableau H.104 – Spécifications des équipements d'essai de mesure de vapeur
- Tableau H.105 – Spécifications pour la chambre d'essai de mesure de vapeur [Go to Page]