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23/30478750 DC BS EN IEC 61643-21. Low voltage surge protective devices - Part 21. Surge protective devices connected to telecommunications and signalling networks. Requirements and testing methods, 2023
- 37A_399e_CD (1).pdf [Go to Page]
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and abbreviated terms [Go to Page]
- 3.1 General
- 3.2 Terms and definitions
- 3.3 Acronyms / Symbols
- 4 Classification [Go to Page]
- 4.1 General
- 4.2 Number of ports
- 4.3 SPD design [Go to Page]
- 4.3.1 Voltage switching SPD
- 4.3.2 Voltage clamping/limiting SPD
- 4.3.3 Combination SPD
- 4.4 Type of SPD
- 1.5 Location
- 1.6 Accessibility
- 4.5 Mounting method
- 1.7 Location of disconnector (including overcurrent protection)
- 1.9 Degree of protection provided by enclosures according to IEC 60529 (IP code)
- 1.10 Temperature and humidity range
- 4.6 SPD modes of protection
- 1.11 End of life mode of the SPD assembly
- 4.7 Short-Circuit Disconnection Component (SCDC)
- 1.100 SPD configurations
- 4.8 Overstressed fault mode acc. 3.2.115 [Go to Page]
- 4.8.1 Mode 1
- 4.8.2 Mode 2
- 4.8.3 Mode 3
- 1.101 Additional information about transmission and special applications
- 4.9 Protective provisions of SPDs installed in application with more than 100 W
- 5 Void
- 6 Marking and other product information [Go to Page]
- 6.1 General
- 6.2 List of items [Go to Page]
- 1.101.100 Information which shall be provided with the products to be delivered
- 6.2.1 Information which shall be provided in the product documentation
- 6.2.2 Information which shall be provided by the manufacturer for type testing, as applicable
- 6.3 Information about status indicator
- 7 Service conditions
- 8 Requirements [Go to Page]
- 8.1 General requirements
- 8.2 Marking
- 8.3 Electrical requirements [Go to Page]
- 8.3.1 Protection against electric shock [Go to Page]
- 8.3.1.1 Protection against direct contact
- 8.3.1.2 Protection during maintenance and replacement
- 8.3.2 Continuous current IC
- 8.3.3 Protective conductor current IPE
- 8.3.4 Voltage protection level UP
- 8.3.5 Operating duty
- 8.3.6 Disconnectors, SC-means and status indicators [Go to Page]
- 8.3.6.1 Disconnector and SC-means [Go to Page]
- 8.3.6.1.1 Disconnectors
- 8.3.6.1.2 SC-means
- 8.3.6.2 Thermal protection
- 8.3.6.3 Short circuit current behaviour
- 8.3.6.4 Overstress behaviour
- 8.3.6.5 Status indicators
- 1.101.7 Insulation resistance
- 8.3.7 Dielectric withstand
- 8.3.8 Behaviour under temporary overvoltages
- 8.3.9 Maximum discharge current Imax
- 1.101.100 Impulse durability and voltage protection level
- 8.3.10 Impulse reset
- 8.3.11 AC durability, if declared by the manufacturer
- 8.3.12 Blind spot
- 8.3.13 Current-limiting requirements [Go to Page]
- 8.3.13.1 General
- 8.3.13.2 Series resistance
- 8.3.13.3 Current response time
- 8.3.13.4 Current reset time
- 8.3.13.5 Maximum interrupting voltage
- 8.3.13.6 Operating duty test for current limiting function
- 8.3.13.7 AC durability for current-limiting function
- 8.3.13.8 Impulse durability for current limiting function
- 8.3.14 Transmission requirements [Go to Page]
- 8.3.14.1 General
- 8.3.14.2 Capacitance
- 8.3.14.3 Insertion loss
- 8.3.14.4 Return loss
- 8.3.14.5 Longitudinal balance
- 8.3.14.6 Near-end crosstalk (NEXT)
- 8.4 Mechanical requirements [Go to Page]
- 8.4.1 Mounting
- 8.4.2 Screws, current carrying parts and connections
- 8.4.3 External connections
- 8.4.4 Air clearances and creepage distances
- 8.4.5 Mechanical strength
- 8.5 Environmental and material requirements [Go to Page]
- 8.5.1 Protection provided by enclosure (IP code)
- 8.5.2 Temperature withstand
- 8.5.3 Resistance to abnormal heat and fire
- 8.5.4 Tracking resistance
- 8.5.5 Ageing behaviour under damp heat
- 1.101.6 Electromagnetic compatibility
- 8.6 Additional requirements for specific SPD designs [Go to Page]
- 8.6.1 Two port SPDs and one port SPDs with separate input/output connections [Go to Page]
- 8.6.1.1 Rated load current IL
- 8.6.1.2 Overload behaviour
- 8.6.1.3 Load-side short-circuit rating
- 8.6.2 Environmental stress for outdoor SPDs
- 8.6.3 SPDs with electrically separated circuits
- 8.6.4 Total discharge current ITotal (for multimode SPDs), if declared by the manufacturer
- 8.6.5 Two port SPDs
- 8.6.6 Short-circuiting SPDs
- 1.101.100 High temperature and humidity endurance
- 8.6.7 Environmental cycling with impulse durability
- 8.6.8 Environmental cycling with AC durability
- 9 Tests [Go to Page]
- 9.1 Type testing procedures [Go to Page]
- 9.1.1 General testing procedures
- 9.1.2 Impulse discharge current
- 9.1.3 8/20 Current impulse
- 9.1.4 1,2/50 voltage impulse
- 9.1.5 Combination wave
- 1.101.100 Waveform tolerances of impulse categories C3 and D2
- 9.2 Indelibility of markings
- 9.3 Electrical tests [Go to Page]
- 9.3.1 Protection against direct contact [Go to Page]
- 9.3.1.1 Insulated parts
- 9.3.1.2 Metal parts
- 9.3.2 Continuous current IC
- 9.3.3 Protective conductor current IPE
- 9.3.4 Voltage protection level UP
- 9.3.5 Operating duty
- 9.3.6 Safety performance of overstressed SPDs [Go to Page]
- 9.3.6.1 Temperature withstand test
- 9.3.6.2 Thermal protection test [Go to Page]
- 9.3.6.2.1 General
- 9.3.6.2.2 Test settings
- 9.3.6.2.3 Pass criteria
- 9.3.6.3 Short-circuit current behaviour test
- 9.3.6.4 Dedicated overstress test [Go to Page]
- 9.3.6.4.100 Sample preparation [Go to Page]
- 9.3.6.4.101 Test procedure
- 9.3.6.4.102 Pass criteria
- 9.3.6.5 Status indicators
- 1.101.7 Insulation resistance
- 9.3.7 Dielectric withstand
- 9.3.8 Behaviour under temporary overvoltages
- 9.3.9 Maximum discharge current Imax, if declared by the manufacturer
- 1.101.100 Impulse durability and voltage protection level [Go to Page]
- 9.3.9.1 Test procedure
- 9.3.9.2 Pass criteria
- 9.3.10 Impulse reset [Go to Page]
- 9.3.10.1 Test procedure
- 9.3.10.2 Pass criteria
- 9.3.11 AC durability [Go to Page]
- 9.3.11.1 Test procedure
- 9.3.11.2 Pass criteria
- 9.3.12 Blind spot test [Go to Page]
- 9.3.12.1 Test procedure
- 9.3.12.2 Pass criteria
- 9.3.13 Current-limiting tests [Go to Page]
- 9.3.13.1 General
- 9.3.13.2 Series resistance [Go to Page]
- 9.3.13.2.1 Test procedure
- 9.3.13.2.2 Pass criteria
- 9.3.13.3 Current response time [Go to Page]
- 9.3.13.3.1 Test procedure
- 9.3.13.3.2 Pass criteria
- 9.3.13.4 Current reset time [Go to Page]
- 9.3.13.4.1 Test procedure
- 9.3.13.4.2 Pass criteria
- 9.3.13.5 Maximum interrupting voltage [Go to Page]
- 9.3.13.5.1 Test procedure
- 9.3.13.5.2 Pass criteria
- 9.3.13.6 Operating duty test for SPDs with current limiting functions. [Go to Page]
- 9.3.13.6.1 Test procedure
- 9.3.13.6.2 Pass criteria
- 9.3.13.7 AC durability for current limiting function [Go to Page]
- 9.3.13.7.1 Test procedure
- 9.3.13.7.2 Pass criteria
- 9.3.13.8 Impulse durability for current limiting function [Go to Page]
- 9.3.13.8.1 Test procedure
- 9.3.13.8.2 Pass criteria
- 9.3.14 Transmission tests [Go to Page]
- 9.3.14.1 Capacitance [Go to Page]
- 9.3.14.1.1 Test procedure
- 9.3.14.1.2 Pass criteria
- 9.3.14.2 Insertion loss [Go to Page]
- 9.3.14.2.1 Test procedure
- 9.3.14.2.2 Pass criteria
- 9.3.14.3 Return loss [Go to Page]
- 9.3.14.3.1 Test procedure
- 9.3.14.3.2 Pass criteria
- 9.3.14.4 Longitudinal balance / Longitudinal conversion loss (LCL) [Go to Page]
- 9.3.14.4.1 Test procedure
- 9.3.14.4.2 Pass criteria
- 9.3.14.5 Near-end crosstalk (NEXT) [Go to Page]
- 9.3.14.5.1 Test procedure
- 9.3.14.5.2 Pass criteria
- 9.4 Mechanical tests [Go to Page]
- 9.4.1 General
- 9.4.2 Reliability of screws, current-carrying parts and connections
- 9.4.3 Tests for external connections [Go to Page]
- 9.4.3.1 General
- 9.4.3.2 Screw terminals and bolted connections
- 9.4.3.3 Screwless terminals
- 9.4.3.4 Insulation piercing connections
- 9.4.3.5 Pull test on connections designed for multi-core cables or cords
- 9.4.3.6 Flat quick connect terminations
- 9.4.3.7 Flying leads (pigtail connections) [Go to Page]
- 9.4.3.7.1 Pull test on flying lead conductors
- 9.4.3.7.2 Pass criteria
- 9.4.4 Verification of air clearances and creepage distances [Go to Page]
- 9.4.4.1 General
- 9.4.4.2 Pass criteria
- 9.4.5 Mechanical strength
- 9.5 Environmental and material tests [Go to Page]
- 9.5.1 Resistance to ingress of solid objects and to harmful ingress of water
- 9.5.2 Heat resistance
- 9.5.3 Resistance to abnormal heat and fire
- 9.5.4 Tracking resistance
- 9.5.5 Life test under damp heat
- 9.6 Additional tests for specific SPD designs [Go to Page]
- 9.6.1 Tests for two-port SPDs and one-port SPDs with separate input/output connections [Go to Page]
- 9.6.1.1 Rated load current (IL) [Go to Page]
- 9.6.1.1.1 Test procedure
- 9.6.1.1.2 Pass criteria
- 9.6.1.2 Overload behaviour [Go to Page]
- 9.6.1.2.1 Test procedure
- 9.6.1.2.2 Pass criteria
- 9.6.1.3 Load-side short-circuit current behaviour test
- 9.6.2 Environmental stress for outdoor SPDs
- 9.6.3 SPDs with separated circuits
- 1.101.4 Total discharge current test for multipole SPDs [Go to Page]
- 9.6.3.1 Test procedure
- 9.6.3.2 Pass criteria
- 9.6.4 Tests for two port SPDs only
- 1.101.100 High temperature and humidity endurance [Go to Page]
- 9.6.4.1 Test procedure
- 9.6.4.2 Pass criteria
- 9.6.5 Environmental cycling with impulse durability [Go to Page]
- 9.6.5.1 Test procedure
- 9.6.5.2 Pass criteria
- 9.6.6 Environmental cycling with AC durability [Go to Page]
- 9.6.6.1 Test procedure
- 9.6.6.2 Pass criteria
- Annexe A (normative) Application of annexes from IEC 61643-01
- Annexe B (informative) Devices with current-limiting components only
- Annexe C (informative) Example configurations for measuring UP
- Annexe D (informative) Special resistibility in telecommunication systems
- Annexe E (informative) Bit error ratio (BER)
- Annexe F (informative) Example of transmission test methods for SPDs connected to LAN [Go to Page]
- A.1 Abbreviations
- A.2 Requirements
- A.3 Test methods [Go to Page]
- A.3.1 Measurement circuit
- A.3.2 Insertion loss
- A.3.3 NEXT, power sum NEXT
- A.3.4 Return loss
- Annexe G (normative) Variants of SPDs
- Annexe H (informative) Typical threat parameters for SPDs
- Annexe I (informative) Examples of source voltages and currents for impulse reset test
- Annexe J (informative) Test circuit examples for testing more than one mode of protection simultaneously [Go to Page]
- A.4 General
- A.5 Impulse durability and voltage protection level
- A.6 Impulse reset time
- A.7 AC durability
- A.8 AC durability for current limiting function
- A.9 Impulse durability for current limiting function
- A.10 Environmental cycling with impulse durability
- A.11 Environmental cycling with AC durability
- Bibliography [Go to Page]
