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eLibrary >
BS EN 60947-5-1:2017 - TC Tracked Changes. Low-voltage switchgear and controlgear - Control circuit devices and switching elements. Electromechanical control circuit devices >
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BS EN 60947-5-1:2017 - TC Tracked Changes. Low-voltage switchgear and controlgear - Control circuit devices and switching elements. Electromechanical control circuit devices, 2020
- 30291885_new.pdf [Go to Page]
- undefined
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 General [Go to Page]
- 1.1 Scope and object
- 1.2 Normative references
- 2 Terms and definitions [Go to Page]
- 2.1 Basic terms and definitions
- 2.2 Control switches
- 2.3 Parts of control switches
- 2.4 Operation of control switches [Go to Page]
- 2.4.1 Operation of contactor relays
- 2.4.2 Operation of pilot switches
- 2.4.3 Operation of rotary switches
- 2.4.4 Operation of mechanically operated control switches
- 3 Classification [Go to Page]
- 3.1 Contact elements
- 3.2 Control switches
- 3.3 Control circuit devices
- 3.4 Time delay switching elements
- 3.5 Control switch mounting
- 4 Characteristics [Go to Page]
- 4.1 Summary of characteristics [Go to Page]
- 4.1.1 General
- 4.1.2 Operation of a control switch
- 4.2 Type of control circuit device or switching element [Go to Page]
- 4.2.1 Kind of control circuit device
- 4.2.2 Kind of switching elements
- 4.2.3 Number of poles
- 4.2.4 Kind of current
- 4.2.5 Interrupting medium
- 4.2.6 Operating conditions
- 4.3 Rated and limiting values for switching elements [Go to Page]
- 4.3.1 General
- 4.3.2 Rated voltages (of a switching element)
- 4.3.3 Currents
- 4.3.4 Rated frequency
- 4.3.5 Vacant
- 4.3.6 Normal and abnormal load characteristics
- 4.3.7 Shortcircuit characteristics
- 4.4 Utilization categories for switching elements
- 4.5 Vacant
- 4.6 Vacant
- 4.7 Vacant
- 4.8 Vacant
- 4.9 Vacant
- 4.10 Electrically separated contact elements
- 4.11 Actuating quantities for pilot switches
- 4.12 Pilot switches having two or more contact elements
- 5 Product information [Go to Page]
- 5.1 Nature of information
- Tables [Go to Page]
- Table 1 – Utilization categories for switching elements
- 5.2 Marking [Go to Page]
- 5.2.1 General
- 5.2.2 Terminal identification and marking
- 5.2.3 Functional markings
- 5.2.4 Emergency stop
- 5.2.5 Operating diagram
- 5.2.6 Time delay markings
- 5.3 Instructions for installation, operation and maintenance
- 5.4 Additional information
- 6 Normal service, mounting and transport conditions [Go to Page]
- 6.3.1 Mounting of single hole mounted devices
- Table 2 – Mounting hole diameter and dimensions of the key recess (if any)
- 7 Constructional and performance requirements [Go to Page]
- 7.1 Constructional requirements [Go to Page]
- 7.1.1 General
- 7.1.2 Materials
- Table 3 – Preferred minimum distances between centres of mounting holes [Go to Page]
- 7.1.3 Current-carrying parts and their connections
- 7.1.4 Clearances and creepage distances
- 7.1.7 Conditions for control switches suitable for isolation
- 7.1.8 Terminals
- 7.1.14 Class II control circuit devices
- 7.1.15 Requirements for control devices with integrally connected cables
- 7.2 Performance requirements [Go to Page]
- 7.2.3 Dielectric properties
- 7.2.4 Ability to make and break under normal and abnormal load conditions
- 7.2.5 Conditional short-circuit current
- 7.2.6 Vacant
- 7.2.7 Additional requirements for control switches suitable for isolation
- 7.2.8 Maximum recovery time
- 7.3 Electromagnetic compatibility (EMC) [Go to Page]
- 7.3.1 General
- 7.3.2 Immunity
- 7.3.3 Emission
- Table 4 – Verification of making and breaking capacities of switching elements under normal conditions corresponding to the utilization categories
- Table 5 – Verification of making and breaking capacities of switching elements under abnormal conditions corresponding to the utilization categories
- Table 6 – Test conditions for glow-wire test
- Table 7 – Acceptance criteria
- Table 8 – Immunity tests
- 8 Tests [Go to Page]
- 8.1 Kinds of test [Go to Page]
- 8.1.1 General
- 8.1.2 Type tests
- 8.1.3 Routine tests
- 8.1.4 Sampling tests
- 8.1.5 Special tests
- 8.2 Compliance with constructional requirements [Go to Page]
- 8.2.1 Materials
- 8.2.2 Equipment
- 8.2.3 Enclosures for equipment
- 8.2.4 Mechanical and electrical properties of terminals
- 8.2.5 Verification of actuating force (or moment)
- 8.2.6 Verification of limitation of rotation (of a rotary switch)
- 8.2.7 Conduit pull-out test, torque test and bending test with metallic conduits
- 8.3 Performance [Go to Page]
- 8.3.1 Test sequences
- 8.3.2 General test conditions
- 8.3.3 Performance under no-load, normal load and abnormal load conditions
- 8.3.4 Performance under conditional short-circuit current
- 8.4 Tests for EMC [Go to Page]
- 8.4.1 General
- 8.4.2 Immunity
- 8.4.3 Emission
- 8.4.4 Test results and test report
- Table 9 – Test values for electrical performance and ageing test of screwless-type clamping units
- Figures [Go to Page]
- Figure 1 – Examples of the recommended method for drawing an operating diagram of a rotary switch
- Figure 2 – Operation of push-buttons
- Figure 3 – Difference e between the over-travel of the actuator and that of the contact element
- Figure 4 – Examples of contact elements (schematic sketches)
- Figure 5 – Test circuits for multi-pole control switches – Contacts of same polarity, not electrically separated
- Figure 6 – Test circuits for multi-pole control switches – Contacts of opposite polarity, and electrically separated
- Figure 7 – Load Ld details for test conditions requiring different values of make and break current and/or power factor (time constant)
- Figure 8 – Test circuit, conditional short-circuit current (see 8.3.4.2)
- Figure 9 – Current/time limits for d.c. test loads (see 8.3.3.5.4)
- Figure 10 – Voltage drop measurement at contactpoint of the clamping unit or terminal
- Annexes [Go to Page]
- Annex A (normative) Electrical ratings based on utilization categories (see 3.1)
- Table A.1 – Examples of contact rating designation based on utilization categories
- Table A.2 – Examples of semiconductors switching element ratingsfor 50 Hz and/or 60 Hz 1)
- Table A.3 – Examples of semiconductors switching element ratings for d.c. 1)
- Annex B (normative) Example of inductive test loads for d.c. contacts [Go to Page]
- B.1 General
- B.2 Construction
- Figure B.1 – Construction of load for d.c. contacts
- Table B.1 – DC loads
- Annex C (normative) Special tests – Durability tests [Go to Page]
- C.1 General [Go to Page]
- C.1.1 Durability declaration
- C.1.2 Test procedures
- C.1.3 Failure criteria
- C.2 Mechanical durability [Go to Page]
- C.2.1 General
- C.2.2 Test procedures
- C.3 Electrical durability [Go to Page]
- C.3.1 General
- C.3.2 Test procedures
- Table C.1 – Making and breaking conditions for electrical durability
- Figure C.1 – Normal circuit (see C.3.2.2)
- Figure C.2 – Simplified circuit (see C.3.2.2)
- Annex D Vacant
- Annex E (normative) Items subject to agreement between manufacturer and user
- Annex F (normative) Class II control circuit devices insulated by encapsulation Requirements and tests [Go to Page]
- F.1 General
- F.2 Terms and definitions
- F.5 Marking
- F.7 Instructional and functional requirements [Go to Page]
- F.7.1 Choice of compound
- F.7.2 Adhesion of the compound
- F.7.3 Dielectric properties
- F.8 Tests [Go to Page]
- F.8.1 Kind of tests
- Figure F.1 – Insulation by encapsulation
- Figure F.2 – Test apparatus
- Annex G (normative) Additional requirements for control circuit devices with integrally connected cables [Go to Page]
- G.1 General
- G.2 Terms and definitions
- G.7 Constructional and performance requirements [Go to Page]
- G.7.1 Constructional requirements
- G.7.2 Performance requirements
- G.8 Tests [Go to Page]
- G.8.1 General
- G.8.2 Type tests
- G.8.3 Results to be obtained
- Annex H (normative) Additional requirements for semiconductor switching elements for control circuit devices [Go to Page]
- H.1 General
- H.2 Terms and definitions
- H.3 Classification [Go to Page]
- H.3.1 Semiconductor switching elements
- H.4 Characteristics [Go to Page]
- H.4.1 Rated voltage
- H.4.2 Utilization categories
- H.5 Product information
- H.7 Constructional and performance requirements [Go to Page]
- H.7.1 Performance requirements
- Figure H.1 – Relationship between Ue and UB [Go to Page]
- [Go to Page]
- H.7.2 Ability to make under abnormal and normal conditions
- H.7.3 Conditional short-circuit current
- H.7.4 Electromagnetic compatibility (EMC)
- H.8 Tests [Go to Page]
- H.8.1 Type tests
- H.8.2 Voltage drop (Ud)
- H.8.3 Minimum operational current (Im)
- H.8.4 OFF-state current (Ir)
- H.8.5 Making and breaking capacities
- H.8.6 Performance under short-circuit current conditions
- Figure H.2 – Example of test circuit for the verification of voltage drop, minimum operational current and OFF-state current (see H.8.2, H.8.3 and H.8.4) [Go to Page]
- [Go to Page]
- H.8.7 Verification of electromagnetic compatibility
- Figure H.3 – Short-circuit testing (see H.8.6.1)
- Annex J (normative) Special requirements for indicator lights and indicating towers [Go to Page]
- J.1 General
- J.2 Terms and definitions
- J.3 Classification
- J.4 Characteristics [Go to Page]
- J.4.1 Rated operational voltage of an indicator light
- J.4.2 Rated thermal power of an indicator light
- J.4.3 Rated values of the lamp
- J.5 Product information
- J.6 Normal service, mounting and transport conditions
- J.7 Constructional and performance requirements
- J.8 Tests [Go to Page]
- J.8.3 Tests for indicator lights and indicating towers
- Figure J.1 – Mounting dimensions for indicating tower socket
- Figure J.2 – Mounting dimensions for temperature rise tests [Go to Page]
- [Go to Page]
- J.8.4 Shock and vibration
- J.8.5 Degree of protection for indicating towers
- Annex K (normative) Special requirements for control switches with direct opening action [Go to Page]
- K.1 General
- K.2 Terms and definitions
- K.3 Classification
- K.4 Characteristics [Go to Page]
- K.4.4 Utilization categories for switching elements
- K.5 Product information [Go to Page]
- K.5.2 Marking
- K.5.4 Additional information
- K.6 Normal service, mounting and transport conditions
- K.7 Constructional and performance requirements
- K.8 Tests
- Figure K.1 – Verification of robustness of the actuating system
- Annex L (normative) Special requirements for mechanically linked contact elements [Go to Page]
- L.1 General
- L.2 Terms and definitions
- L.3 Classification
- L.4 Characteristics
- L.5 Product information
- L.6 Normal service, mounting and transport conditions
- L.7 Constructional and performance requirements
- L.8 Tests
- Figure L.1 – Example of representation of NO and NC contacts which are mechanically linked and NC non-linked contact
- Figure L.2 – Symbol for device containing mechanically linked contacts [Go to Page]
- [Go to Page]
- L.8.4 Special test for mechanically linked contact elements
- Annex M (normative) Terminal marking, distinctive number and distinctive letter for control circuit devices [Go to Page]
- M.1 Scope
- M.2 Terminal marking rule [Go to Page]
- M.2.1 General
- M.2.2 Function digit
- M.2.3 Sequence digit
- M.2.4 Numbering method
- M.3 Distinctive number and distinctive letter [Go to Page]
- M.3.1 General
- M.3.2 Distinctive number
- M.3.3 Distinctive letter
- M.4 Terminal numbering sequence
- M.5 Contactor relays designated by the distinctive letter E
- Table M.1 – Diagrams of control switches
- Table M.2 – Diagrams of contactor relays designated by the distinctive letter E [Go to Page]
- M.6 Contactor relays designated by distinctive letters X, Y or Z [Go to Page]
- M.6.1 Contactor relays designated by the distinctive letter Z
- M.6.2 Contactor relays designated by the distinctive letter X
- M.6.3 Contactor relays designated by the distinctive letter Y
- Table M.3 – Diagrams of contactor relays designated by the distinctive letter Y
- Annex N (normative) Procedure to determine reliability data for electromechanical devices in control circuits used in functional safety applications [Go to Page]
- N.1 General [Go to Page]
- N.1.1 Overview
- N.1.2 Scope and object
- N.1.3 General requirements
- N.2 Terms, definitions and symbols
- N.3 Method based on durability test results [Go to Page]
- N.3.1 General method
- N.3.2 Test requirements
- N.3.3 Number of samples
- N.3.4 Characterization of a failure mode
- N.3.5 Weibull modelling
- N.3.6 Useful life and upper limit of failure rate
- N.3.7 Reliability data
- N.4 Data information
- N.5 Example
- Bibliography [Go to Page]
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