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GB/T 18802.22-2019: Low-voltage surge protective devices -- Part 22: Surge protective devices connected to telecommunications and signalling networks -- Selection and application principles
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Low-voltage surge protective devices -- Part 22: Surge protective devices connected to telecommunications and signalling networks -- Selection and application principles
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Low-voltage surge protective devices -- Part 22: Surge protective devices connected to telecommunications and signalling networks -- Selection and application principles
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Basic data | Standard ID | GB/T 18802.22-2019 (GB/T18802.22-2019) | | Description (Translated English) | Low-voltage surge protective devices -- Part 22: Surge protective devices connected to telecommunications and signalling networks -- Selection and application principles | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K30 | | Classification of International Standard | 29.240.10 | | Word Count Estimation | 62,666 | | Date of Issue | 2019-12-10 | | Date of Implementation | 2020-07-01 | | Older Standard (superseded by this standard) | GB/T 18802.22-2008 | | Quoted Standard | GB/T 18802.12-2014; GB/T 18802.21-2016; GB/T 21714.1-2015; GB/T 21714.2-2015; GB/T 21714.3-2015; GB/T 21714.4-2015; IEC 61000-4-5; IEC 61643-11 | | Adopted Standard | IEC 61643-22-2015, IDT | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies guidelines for the selection, operation, installation and coordination of surge protectors (SPDs) in telecommunications and signalling networks where the nominal system voltage does not exceed 1 000 V ac rms and 1 500 V dc. This standard applies to SPDs (called multifunctional SPDs) that are combined in the same enclosure for signal line and power line protection. | GB/T 18802.22-2019: Low-voltage surge protective devices -- Part 22: Surge protective devices connected to telecommunications and signalling networks -- Selection and application principles
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(Low-voltage surge protectors.Part 22. Surge protectors for telecommunications and signalling networks.Guidelines for selection and use)
ICS 29.240.10
K30
National Standards of People's Republic of China
Replaces GB/T 18802.22-2008
Low-voltage surge protectors. Part 22. Telecommunications and
Guidelines for the selection and use of surge protectors in signal networks
Low-voltagesurgeprotectivedevices-Part 22. Surgeprotectivedevices
(IEC 61643-22..2015, IDT)
2019-12-10 release
2020-07-01 implementation
State Administration of Market Supervision
Published by the National Standardization Management Committee
Contents
Foreword Ⅴ
Introduction Ⅶ
1 Scope 1
2 Normative references 1
3 Terms and definitions, abbreviations 1
3.1 Terms and definitions 1
3.2 Abbreviations 2
4 Technical Note 2
4.1 Overview 2
4.2 Voltage-Limited Components 2
4.3 Current-Limited Components 3
5 Select the parameters used for SPD and the corresponding test in GB/T 18802.21-2016 3
5.1 Overview 3
5.2 Normal use environment 3
5.3 SPD parameters that may affect the normal operation of the system 4
6 Risk Management 4
6.1 Overview 4
6.2 Risk analysis 5
6.3 Risk identification 5
6.4 Risk management 6
7 Applications of SPD 7
7.1 Overview 7
7.2 Coupling mechanism 7
7.3 Application, selection and installation of SPD 9
8 Multi-function surge protector 15
9 Coordination of SPD with information technology equipment 17
Appendix A (informative) Voltage limiting components 18
Appendix B (Informative) Current Limiting Components 22
Appendix C (Informative) Risk Management 27
Appendix D (informative) Transmission characteristics related to IT systems 31
Appendix E (informative) Coordination of SPD and information system equipment 34
Appendix F (Informative) Protection of Ethernet Systems 37
Appendix G (informative) Impact of surge protectors on electromagnetic compatibility 42
Appendix H (informative) Definition of internal interfaces (from ITU-TK.44) 43
Appendix I (informative) Maintenance of surge protectors for information technology 44
Appendix J (Informative) Ground Elevation (EPR) 46
Appendix K (informative) References and examples of risk management based on GB/T 21714.2-2015 47
References 48
Figure 1 SPD installation for telecommunication and signal networks 6
Figure 2 Measurement and Control Network (MCR) 6
Figure 3 Coupling mechanism 8
Figure 4 Configuration Example of Lightning Protection Principle 10
Figure 5 Lightning protection zone (Figure 4) configuration example 11
Figure 6 Example of protection method for common mode and differential mode voltages of information technology equipment data (f) and power input voltage (g) 12
Figure 7 Effect of UL1 and UL2 caused by lead inductance on protection level UP13
Figure 8 Remove the voltages UL1 and UL2 of the protection unit by connecting the connection leads to the common point 13
Figure 9 Necessary conditions for installation of information technology equipment with three, five or multi-terminal SPDs with the least impact on the actual protection level 14
Figure 10 Independent SPD 15
Figure 11 MSPD 16 with PE wire connection
Figure 12 MSPD 16 with transient equipotential bonding between SPC and PE terminals
Figure 13 Coordination of two SPDs 17
Figure A.1 Clamping element characteristics Figure 18
Figure A.2 Circuit diagram of voltage switching element 20
Figure B.1 Characteristics of current-cutting element 22
Figure B.2 Characteristics of a shunt suppressor 23
Figure B.3 Thermal action (thermal coil) three-terminal parallel current limiter 24
Figure B.4 Characteristics of Current Attenuator (Thermal Type) 25
Figure B.5 Thermal Two-Port Current Attenuation Element (Thermistor PTC) 25
Figure B.6 Two-port electronic current limiter 26
Figure B.7 Three-port electronically triggered current limiter (triac)
Figure C.1 Risk assessment procedure 28
Figure E.1 Cooperative verification steps 35
Figure F.1 PoE Power Mode 37
Figure F.2 The common mode surge is converted to a differential mode surge when the surge protector is not synchronized. 38
Figure F.3 The longitudinal surge caused by the surge protector is not synchronized 39
Figure F.4 Line-to-line protection elements in a surge protector limit the differential mode voltage 39
Figure F.5 Differential Mode Surge Reduction by Line Protection Elements 40
Figure F.6 Surge protector using unipolar switching element and diode rectifier bridge 40
Figure F.7 Reduction of Differential Mode Surge Using Unipolar Switching Elements and Diode Rectifiers 41
Table 1 Division of responsibility for protection measures 5
Table 2 Coupling mechanism 8
Table 3 Recommendations for selection of SPD ratings for protection zone interfaces according to GB/T 21714.1-2015 11
Table 4 SPD classification relationship between IEC 61643-11 and GB/T 18802.21-2016 15
Table 5 Relationship between LPZ and MSPD required test classifications 17
Table C.1 AC overhead power systems 29
Table C.2 AC underground power cable system 29
Table C.3 DC overhead power system 30
Table C.4 DC underground power cable system 30
Table D.1. Transmission characteristics of telecommunication systems on the data network side 31
Table D.2 Transmission characteristics of the client IT system 32
Table D.3 Transmission characteristics of cable television systems 33
Table F.1 Comparison of Type 1 (PoE) and Type 2 (PoE) Power Supply Parameters 37
Table I.1 Longest period of inspection of lightning protection devices according to GB/T 21714.3-2015 45
Table I.2 Longest period for inspection of lightning protection devices according to ITU-TK.69 [37] 45
Foreword
GB/T 18802 consists of the following parts.
--- GB/T 18802.1 Low-voltage surge protector (SPD) Part 1. Performance requirements of surge protectors for low-voltage power distribution systems
And test methods;
--- GB/T 18802.12 Low voltage surge protector (SPD) Part 12. Surge protector selection and
Use guidelines;
--- GB/T 18802.21 Low-voltage surge protector Part 21. Performance requirements of surge protectors (SPD) for telecommunications and signal networks
Summation test method;
--- GB/T 18802.22 Low-voltage surge protector Part 22. Selection and use of surge protectors for telecommunications and signal networks
Guidelines;
--- GB/T 18802.31 Surge protectors for special applications (including DC) for low-voltage surge protectors. Part 31. For photovoltaics
System surge protector (SPD) performance requirements and test methods;
--- GB/T 18802.311 Low-voltage surge protector components-Part 311. Performance requirements and testing of gas discharge tubes (GDT)
Circuit
--- GB/T 18802.312 Low-voltage surge protector components Part 312. Selection and use of gas discharge tubes (GDT)
Guidelines;
--- GB/T 18802.321 Low-voltage surge protector components-Part 321. Avalanche breakdown diode (ABD) specification;
--- GB/T 18802.331 Low-voltage surge protector element Part 331. Specification for metal oxide varistor (MOV);
--- GB/T 18802.341 Low-voltage surge protector components-Part 341. Surge suppression thyristor (TSS) specification;
--- GB/T 18802.351 Low-voltage surge protector elements-Part 351. Surge isolation transformers for telecommunications and signal networks
(SIT) performance requirements and test methods.
This part is Part 22 of GB/T 18802.
This section is drafted in accordance with the rules given in GB/T 1.1-2009.
This section replaces GB/T 18802.22-2008 "Low-voltage surge protectors-Part 22. Surge protectors for telecommunications and signal networks
(SPD) Guidelines for Selection and Use, compared with GB/T 18802.22-2008, the main technical changes are as follows.
--- Increased the term reference of "multifunctional SPD" (see Chapter 1).
--- Revised "normative references" (see Chapter 2, Chapter 2 of the.2008 edition).
● Change GB/T 17626.5-2008, GB 18802.1-2002 and GB/T 18802.21-2004 to IEC 61000-
4-5, IEC 61643-11 and GB/T 18802.21-2016;
● Removed GB/T 19271.1-2003, GB/T 19271.2-2005 and ITU-TK.31..1993;
● Added 18802.12-2014, GB/T 21714.1-2015, GB/T 21714.2-2015, GB/T 21714.3-
2015 and GB/T 21714.4-2015.
--- Revised the definition of "endurance", modified the term "multi-channel SPD" to "multi-function surge protector" and added the abbreviation
Table (see Chapter 3, Chapter 3 of the.2008 edition).
--- Increased the "air pressure and altitude", modified the "ambient temperature" and "relative humidity" range, added the "abnormal use environment" said
Ming (see Chapter 5, Chapter 5 of the.2008 edition).
--- Amended the content of Table 1 "Responsibility for the division of labor of protection measures", and added Figure 2 "Measurement and Control Network" (see Chapter 6,.2008
Chapter 6 of the edition).
--- Deleted Table 3 "SPD amount for protection zone interface according to GB/T 19271.1-2003 and GB/T 17626.5-1999
The recommended range of surge values in the “Recommended shape modeling”. Added “IEC 61643-11 and GB/T 18802.21-2016
SPD classification comparison "(see Chapter 7, Chapter 7 of the.2008 edition).
--- Added the features and application notes of multi-function SPD (see Chapter 8).
--- Added Appendix F, Appendix G, Appendix H, Appendix I, Appendix J and Appendix K.
This section uses the translation method equivalent to IEC 61643-22..2015 "Low-voltage surge protectors-Part 22. Telecommunications and signal networks
Guidelines for Selecting and Using Surge Protectors.
The Chinese documents that have a consistent correspondence with the international documents referenced normatively in this section are as follows.
--- GB/T 17626.5-2019 electromagnetic compatibility test and measurement technology surge (shock) immunity test (IEC 61000-4-
5..2014, IDT).
Please note that some elements of this document may involve patents. The issuer of this document is not responsible for identifying these patents.
This section is proposed by China Electrical Equipment Industry Association.
This part is under the jurisdiction of the National Lightning Arrester Standardization Technical Committee (SAC/TC81).
This section was drafted. Shanghai Lightning Protection Center, Xi'an High Voltage Apparatus Research Institute Co., Ltd., Shanghai Electrical Appliance Research Institute, Shanghai
University, Sichuan Zhongguang Lightning Protection Technology Co., Ltd., Shanghai Lightning Lightning Protection Technology Co., Ltd., Dehe Sheng Electric (Shanghai) Co., Ltd.
(Shanghai) Co., Ltd., Shanghai Youtai Oushen Electromechanical Co., Ltd.
The main drafters of this section. Zhou Qibin, Huang Yong, Lei Chengyong, Zhao Yang, Zhang Jinzhang, Li Renjie, Tong Jing, Bai Yucheng, Wang Jiongqi.
The previous versions of the standards replaced by this section are.
--- GB/T 18802.22-2008.
Introduction
This part of GB/T 18802 is the telecommunication and signal SPD, and the combination of them with the SPD of the power line in the same housing
Product (referred to as multifunctional SPD) guidelines for the application of telecommunications and signal lines. Definitions, requirements and test methods for these SPDs
GB/T 18802.21-2016. Whether or not to use SPD can be determined based on a risk analysis of the network or system under consideration. Because of telecommunications
And signal systems may require long distance lines, whether underground or overhead lines, may suffer from lightning and power line failures
And over-voltage caused by the opening and closing operation of power lines or load lines.If these lines are not protected,
Technical equipment (ITE) poses serious risks. Other factors that may influence the decision to use SPD include industry regulations and insurance terms. this
Part of the SPD demand assessment, selection, installation and specification of SPD, and between SPD and SPD and installation in telecommunications and signaling
Guidance is provided, for example, on the coordination of information technology equipment on the line.
The cooperation of SPD is to ensure the positive interaction between SPDs and between SPDs and the information technology equipment being protected. SPD
The cooperation requires that the voltage protection level (UP) and allowable current (IP) of the former SPD do not exceed the tolerance of the latter SPD or information technology equipment
ability.
Generally, the SPD closest to the source of the surge discharges most of the surge, and the downstream SPD will release the residual surge. SPD in the system
Coordination is affected by the operation of the SPD and the protected equipment, and the characteristics of the system connected to the SPD.
Generally, to achieve the proper fit, check.
--- the waveform of the surge (pulse or AC);
--- The ability of the equipment to withstand overvoltage/overcurrent without damage;
--- Installation conditions, such as the distance between SPDs or between SPDs and information technology equipment;
--- SPD voltage protection level.
The performance of SPDs and their cooperation with other SPDs may be affected by transient impacts previously encountered. For reaching SPD limit energy
The transient impact of force is particularly obvious. If you have any doubts about the capacity and strength of the SPD you are considering
It is recommended to use a higher performance SPD.
A direct effect of poor coordination may be that the SPD closest to the surge source is ineffective, with the consequence of making the subsequent stage SPD
Having to withstand the full power surge will cause damage to the SPD.
Lack of proper coordination may also result in equipment damage, which in severe cases may lead to fire hazards.
There are several techniques that can be used to design the SPD covered in this section. These techniques are clarified in the text and are also informative Appendix A and Appendix B
Description.
Low-voltage surge protectors. Part 22. Telecommunications and
Guidelines for the selection and use of surge protectors in signal networks
1 Scope
This section of GB/T 18802 specifies telecommunications and systems with nominal voltages not exceeding 1000 rms AC and 1500 VDC.
Guidelines for the selection, operation, installation and coordination of SPDs in signal networks.
This section applies to SPDs (referred to as multifunctional SPDs) that are combined in the same enclosure for signal line and power line protection.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 18802.12-2014 Low-voltage surge protector (SPD) Part 12. Selection of surge protectors for low-voltage power distribution systems
And usage guidelines (IEC 61643-12..2008, IDT)
GB/T 18802.21-2016 Low-voltage surge protectors. Part 21. Surge protectors (SPD) for telecommunication and signal networks
Energy requirements and test methods (IEC 61643-21..2012, IDT)
GB/T 21714.1-2015 Lightning protection Part 1. General (IEC 62305-1..2010, IDT)
GB/T 21714.2-2015 Lightning Protection Part 2. Risk Management (IEC 62305-2..2010, IDT)
GB/T 21714.3-2015 Lightning protection Part 3. Physical damage to buildings and danger to life (IEC 62305-3..2010,
IDT)
GB/T 21714.4-2015 Lightning protection Part 4. Electrical and electronic systems in buildings (IEC 62305-4..2010, IDT)
IEC 61000-4-5 Electromagnetic Compatibility (EMC) Part 4-5. Test and Measurement Techniques Surge Immunity Test (Electromag-
neticcompatibility (EMC) -Part 4-5. Testingandmeasurementtechniques-Surgeimmunitytest)
IEC 61643-11 Low voltage surge protectors. Part 11. Surge protectors requirements and test methods for low voltage power systems
(Low-voltagesurgeprotectivedevices-Part 11. Surgeprotectivedevicesconnectedtolow-voltage
powersystems-Requirementsandtestmethods)
3 Terms and definitions, acronyms
3.1 Terms and definitions
The following terms and definitions apply to this document.
3.1.1
Tolerance
The ability of telecommunication equipment or facilities to withstand overvoltages or overcurrents to a specified degree without damage in accordance with prescribed standards.
Note. This definition is taken from ITU-TK.44 [32]. 1)
1) The number in square brackets is the reference number.
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