GB/T 18802.21-2016Low-voltage surge protective devices -- Part 21: Surge protective devices connected to telecommunications and signaling networks -- Performance requirements and testing methods (English PDF)

Foreword

GB/T 18802 "Low-voltage surge protector (SPD)" is divided into the following sections.

--- GB 18802.1 Low-voltage surge protector (SPD) - Part 1. Surge protectors for low-voltage distribution systems Performance requirements and experiment method Low voltage surge protector (SPD) - Part 12. Surge protection for low voltage distribution systems - Selection and Use guidelines GB/T 18802.21 Low-voltage surge protectors - Part 21. Surge protectors (SPD) performance for telecommunication and signal networks Requirements and test methods GB/T 18802.22 Low-voltage surge protector - Part 22. Surge protection (SPD) selection for telecommunications and signaling networks and the use of guidelines GB/T 18802.31 Low-voltage surge protector. Surge protector for special applications (including DC) - Part 31.

System Surge Protector (SPD) performance requirements and test methods GB/T 18802.311 Low-voltage surge protector components - Part 311. Gas discharge tube (GDT) specification Low Voltage Surge Protective Devices - Part 321. Avalanche Breakdown Diode (ABD) specification GB/T 18802.321 GB/T 18802.331 Low-voltage surge protector components - Part 331. Specification for metal oxide varistor (MOV) GB/T 18802.341 Low-voltage surge protector components - Part 341. Surge suppression thyristors (TSS) specification this part is part 21 of GB/T 18802.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part of the replacement GB/T 18802.21-2004 "Low-voltage surge protector Part 21. Telecommunications and signal network surge protector (SPD) performance requirements and test methods ".

This part replaces GB 18802.12-2004.

This part compared with GB 18802.12-2004, the main technical changes are as follows.

- "IEC 61643-22" is modified to "GB/T 18802.22" when the "protection device" is modified as "protective element"

--- unified "full" in the "surge" modified to "surge", the "limit pressure" to "voltage limit", the "current limit" to "current limit system";

--- The requirements for SPD in Table 1 are refined to four test series and their corresponding subclauses, and the "yes/no" requirement is modified to " Use/not applicable/optional "and note the precautions of part of the test by note;

- Chapter 2 "Normative references" are modified as follows, where some of the changes in the reference to national standards are due to their corresponding IEC Standard non-equivalent use.

- Change GB/T 5169.11-1997, GB/T 14733.2-1993 and GB/T 14733.7-1993 to GB/T 5169.11-2006, GB/T 14733.2-2008, GB/T 14733.7-2008;

- Deleted GB/T 2423.4-1993, GB 4208-1993, GB 4943-2011, GB/T 16896.1-1997, GB/T 16927.1-1997, GB/T 17626.5-1999, GB/T 17627.1-1998, GB 18802.1-2002;

- Added by GB/T 18802.22-2008, IEC 60060-1. 1989, IEC 60068-2-30. 1980, IEC 60529, IEC 60950-1.:1999, IEC 60999-1, IEC 61000-4-5, IEC 61083-1, IEC 61180-1.:1992, IEC 61643-1, IEC 61643-11.:2011, ITU-TK.44..2011, ITU-TK.55, ITU-TK.82, ITU-T 0.9..1999;

- The terms and definitions listed in Chapter 3 are amended as follows.

- "maximum interrupt voltage" "surge protector" "limit voltage" "current limit" "can not be self-healing current limit" "self-recovery current limit" "Self-healing current limit" "limit pressure type SPD" "voltage switch type SPD" "impact tolerance" definition;

- Increased "total discharge current" "Surge (telecommunications)" "Nominal discharge current" "Rated surge current" "Impulse discharge current" definition;

--- Chapter 4 Modifies the "Temperature and Humidity" range in "4.1 Conditions of Use", adding "4.1.2 Special Conditions of Use", modify "4.2 test temperature and test humidity", modify the "4.3SPD test" part of the content;

- Chapter 5 adds the contents of "5.1.1 Identification and Documentation", improves the requirements of "5.1.2 Mark", and changes the "5.2.1.1" Large operating voltage "requirements, the" 5.3.4 to prevent electric shock "modified to" anti-direct contact ", the" 5.3.5 fire "modified to" resistance Burning "," 5.4.1 high temperature and high humidity capacity "modified to" high temperature and high humidity tolerance ";

--- Chapter 6 is amended as follows.

- In the "6.1 mark" test, n-hexane with a concentration of not less than 85% is added as a reagent;

- In the "6.2.1 pressure limit test", the test voltage tolerance, ripple, frequency of the index requirements, the provisions of the common mode test Mandatory and differential mode test options. Modified "6.2.1.2 Insulation resistance" "6.2.1.3 Shock limit voltage" "6.2.1.4 Impact reset time "" 6.2.1.5 AC tolerance test "" 6.2.1.7 Overload fault mode "test content.

"6.2.1.6.1 Additional test of multi-terminal SPD". Modify the contents of Table 3;

- In "6.2.2 current limiting test", the measurement requirements under DC and AC/DC are increased;

- In the "6.2.3 Transmission Characteristics Test", the contents of the "longitudinal balance test" and "bit error rate (BER)" are modified.

- In the "6.3 Mechanical Characteristics Test", modify "6.3.4 to prevent electric shock" and "6.3.5 fire test" respectively.

Contact "and" 6.3.5 flame retardant test ";

- In the "6.4 Environmental Test", "6.4.1 Test of high temperature and high humidity" is changed to "High temperature and high humidity resistance test" and the tolerance range of the test temperature and humidity is specified;

--- "6.5 acceptance test" modified to Chapter 7;

--- Figure 16 "Example of multi-terminal SPD with common current path" - The contents of Appendix B were deleted and appendices B (vacancies), appendix C (vacancies), appendix D, appendix E, appendix F and appendix G. were added.

This part is equivalent to IEC 61643-21.:2012 "Low-voltage surge protector Part 21. Surge protection for telecommunications and signaling networks (SPD) performance requirements and test methods ".

In this part of the normative reference to the international documents have a consistent correspondence between the following documents.

GB/T 17627.1-1998 High pressure test technology for low voltage electrical appliances - Part 1. Definitions, tests and procedures requirements (IEC 61180-1-1992, MOD).

This part is made by China Electrical Equipment Industry Association.

This part is headed by the National Standardization Technical Committee for Arresters (SAC/TC81).

This part of the main drafting unit. Shanghai Lightning Protection Center, Xi'an High Voltage Electric Research Institute Co., Ltd., Shanghai Electric Research Institute.

This part participates in the drafting unit. Guiyang Gao Xinyi Ge Electronics Co., Ltd., Shanghai Lei Xun Lightning Protection Technology Co., Ltd., Rhine test certification service (China) Co., Ltd., Phoenix Asia Pacific Electric (Nanjing) Co., Ltd., Sichuan Zhongguang Lightning Technology Co., Ltd., Emerson Network Energy Co., Ltd., Shenzhen Shield Lightning Protection Technology Co., Ltd., Huawei Technologies Co., Ltd., Beijing ABB Low Voltage Electric Co., Ltd., Shenzhen (Shanghai) Co., Ltd., Schneider Electric (China) Co., Ltd. Shanghai Branch, Delixi Electric Co., Ltd., Xi'an God Electric Co., Ltd., Shanghai Union Power Industry Co., Ltd., Germany and Sheng Electric (Shanghai) Co., Ltd., North Beijing breakthrough Electric Co., Ltd.

This part of the main drafters. Zhou Qibin, Cheng Wenyi, Yan Cangwei, Fei pride, Zhang Jinyang, Huang Yong, Zhao Yang, Zhao Xinhua, Xu Zhuqin, Lei Chengyong, Meng Qi, Wang Xinxia, Guo Yaping, Dai Chuanyou, Liu Liping, He Hengwen, Tao Jun, Liu Zhenliang, Ni Xiangyu, Wang Jiongqi, Wu Yunling, Yang Jianfeng.

This part of the previous version of the standard to replace the release of the situation.

--- GB/T 18802.21-2004.

Introduction

This section is intended to identify surge protectors for the protection of telecommunications and signaling systems such as low-voltage data circuits, audio circuits and alarm circuits (SPD) requirements. The telecommunications and signaling systems may be affected by lightning and power line failures, either directly or through induction, causing the system Withstand overvoltages or overcurrents that are sufficient to cause damage or both. Surge protector (SPD) is to prevent the system from being protected by lightning Electricity and power lines fault generated by the over-voltage and over-current role of a protective device. This section describes the pilot items and requirements these tests and requirements establish a method for testing SPDs and determining their performance.

The SPD in this section includes only the components of the overvoltage protection function and the overvoltage overcurrent protection element. Only overcurrent the SPD of the protective element is not the content of this standard, but Appendix A contains the SPD containing only the current limiting protection element.

An SPD can consist of several overvoltage and overcurrent protection elements, but all SPD tests are based on a "black box" Determine the test procedure with the number of terminals of the SPD, rather than the number of protected components within the SPD. The SPD is given in 1.2 the structure of the diagram. For multiple SPDs, each road can be tested separately, or at the same time, all lines can be test.

The test conditions and test requirements of this section are wide and are determined by the user at the time of use. But 1.3 is given in this section Requirements for all types of SPDs. This part is a performance standard, only SPD capacity requirements, the failure rate and its interpretation by the user consider. The selection principle for SPD will be included in GB/T 18802.22.

If the SPD is a single component device, it shall meet the relevant standards and the requirements of this part.

Low-voltage surge protector - Part 21.

Telecommunication and Signal Network Surge Protectors (SPD) Performance requirements and test methods

1 General