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BSI 23/30478750 DC 2023

BSI 23/30478750 DC 2023

$13.70

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

Published By Publication Date Number of Pages
BSI 2023 87
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PDF Catalog

PDF Pages PDF Title
11 FOREWORD
13 INTRODUCTION
14 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 General
3.2 Terms and definitions
17 3.3 Acronyms / Symbols
4 Classification
4.1 General
4.2 Number of ports
4.3 SPD design
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)
18 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
19 4.8 Overstressed fault mode acc. 3.2.115
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
6.1 General
20 6.2 List of items
1.101.100 Information which shall be provided with the products to be delivered
21 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
8.1 General requirements
25 8.2 Marking
8.3 Electrical requirements
8.3.1 Protection against electric shock
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
8.3.6.1 Disconnector and SC-means
8.3.6.1.1 Disconnectors
26 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
27 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
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
28 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
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)
29 8.4 Mechanical requirements
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
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
30 8.6.1 Two port SPDs and one port SPDs with separate input/output connections
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
31 8.6.7 Environmental cycling with impulse durability
8.6.8 Environmental cycling with AC durability
9 Tests
9.1 Type testing procedures
9.1.1 General testing procedures
33 9.1.2 Impulse discharge current
34 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
9.3.1 Protection against direct contact
35 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
9.3.6.1 Temperature withstand test
9.3.6.2 Thermal protection test
9.3.6.2.1 General
9.3.6.2.2 Test settings
36 9.3.6.2.3 Pass criteria
9.3.6.3 Short-circuit current behaviour test
9.3.6.4 Dedicated overstress test
9.3.6.4.100 Sample preparation
37 9.3.6.4.101 Test procedure
38 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
9.3.9.1 Test procedure
41 9.3.9.2 Pass criteria
9.3.10 Impulse reset
9.3.10.1 Test procedure
43 9.3.10.2 Pass criteria
9.3.11 AC durability
9.3.11.1 Test procedure
44 9.3.11.2 Pass criteria
9.3.12 Blind spot test
9.3.12.1 Test procedure
9.3.12.2 Pass criteria
9.3.13 Current-limiting tests
9.3.13.1 General
9.3.13.2 Series resistance
9.3.13.2.1 Test procedure
45 9.3.13.2.2 Pass criteria
9.3.13.3 Current response time
9.3.13.3.1 Test procedure
46 9.3.13.3.2 Pass criteria
9.3.13.4 Current reset time
9.3.13.4.1 Test procedure
9.3.13.4.2 Pass criteria
9.3.13.5 Maximum interrupting voltage
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.
9.3.13.6.1 Test procedure
47 9.3.13.6.2 Pass criteria
9.3.13.7 AC durability for current limiting function
9.3.13.7.1 Test procedure
9.3.13.7.2 Pass criteria
9.3.13.8 Impulse durability for current limiting function
9.3.13.8.1 Test procedure
48 9.3.13.8.2 Pass criteria
9.3.14 Transmission tests
9.3.14.1 Capacitance
9.3.14.1.1 Test procedure
9.3.14.1.2 Pass criteria
9.3.14.2 Insertion loss
9.3.14.2.1 Test procedure
49 9.3.14.2.2 Pass criteria
9.3.14.3 Return loss
9.3.14.3.1 Test procedure
50 9.3.14.3.2 Pass criteria
9.3.14.4 Longitudinal balance / Longitudinal conversion loss (LCL)
9.3.14.4.1 Test procedure
52 9.3.14.4.2 Pass criteria
9.3.14.5 Near-end crosstalk (NEXT)
9.3.14.5.1 Test procedure
9.3.14.5.2 Pass criteria
9.4 Mechanical tests
9.4.1 General
9.4.2 Reliability of screws, current-carrying parts and connections
9.4.3 Tests for external connections
53 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)
9.4.3.7.1 Pull test on flying lead conductors
54 9.4.3.7.2 Pass criteria
9.4.4 Verification of air clearances and creepage distances
9.4.4.1 General
9.4.4.2 Pass criteria
56 9.4.5 Mechanical strength
9.5 Environmental and material tests
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
9.6.1 Tests for two-port SPDs and one-port SPDs with separate input/output connections
9.6.1.1 Rated load current (IL)
9.6.1.1.1 Test procedure
58 9.6.1.1.2 Pass criteria
9.6.1.2 Overload behaviour
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
59 9.6.3.1 Test procedure
61 9.6.3.2 Pass criteria
9.6.4 Tests for two port SPDs only
1.101.100 High temperature and humidity endurance
9.6.4.1 Test procedure
9.6.4.2 Pass criteria
9.6.5 Environmental cycling with impulse durability
9.6.5.1 Test procedure
64 9.6.5.2 Pass criteria
65 9.6.6 Environmental cycling with AC durability
9.6.6.1 Test procedure
66 9.6.6.2 Pass criteria
67 Annexe A (normative) Application of annexes from IEC 61643-01
68 Annexe B (informative) Devices with current-limiting components only
69 Annexe C (informative) Example configurations for measuring UP
70 Annexe D (informative) Special resistibility in telecommunication systems
71 Annexe E (informative) Bit error ratio (BER)
73 Annexe F (informative) Example of transmission test methods for SPDs connected to LAN
A.1 Abbreviations
A.2 Requirements
A.3 Test methods
A.3.1 Measurement circuit
74 A.3.2 Insertion loss
A.3.3 NEXT, power sum NEXT
75 A.3.4 Return loss
76 Annexe G (normative) Variants of SPDs
77 Annexe H (informative) Typical threat parameters for SPDs
78 Annexe I (informative) Examples of source voltages and currents for impulse reset test
79 Annexe J (informative) Test circuit examples for testing more than one mode of protection simultaneously
A.4 General
A.5 Impulse durability and voltage protection level
80 A.6 Impulse reset time
81 A.7 AC durability
A.8 AC durability for current limiting function
82 A.9 Impulse durability for current limiting function
83 A.10 Environmental cycling with impulse durability
85 A.11 Environmental cycling with AC durability
86 Bibliography

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BSI 23/30478750 DC 2023
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