GB/T 18802.11-2020Low-voltage surge protective devices (SPD) - Part 11: Surge protective devices connected to low-voltage power systems - Requirements and test methods (English PDF)

Foreword

GB/T 18802 consists of the following parts:

--- Low-voltage surge protector (SPD) Part 11: Performance requirements and test methods of surge protectors for low-voltage power systems;

--- Low-Voltage Surge Protector (SPD) Part 12: Guide for Selection and Use of Surge Protector for Low-Voltage Distribution System;

--- Low-voltage surge protective devices Part 21: Performance requirements and test methods for surge protective devices (SPD) for telecommunications and signal networks;

--- Low-voltage surge protectors Part 22: Guidelines for the selection and use of surge protectors for telecommunications and signal networks;

--- Low-voltage surge protectors for special applications (including DC) surge protectors: Part 31: Surge protectors for photovoltaic systems

(SPD) performance requirements and test methods;

--- Low-voltage surge protector components Part 311: Performance requirements and test circuits for gas discharge tubes (GDT);

--- Low-voltage surge protector components Part 312: Guidelines for the selection and use of gas discharge tubes (GDT);

--- Low-voltage surge protector components Part 321: Avalanche breakdown diode (ABD) specification;

--- Low-voltage surge protector components Part 331: Metal oxide varistor (MOV) specification;

--- Low-voltage surge protector components Part 341: Surge suppression thyristor (TSS) specification;

--- Low-voltage surge protector components: Part 351: Performance requirements and requirements for surge isolation transformers (SIT) for telecommunications and signal networks

experiment method:

This part is Part 11 of GB/T 18802:

This section was drafted in accordance with the rules given in GB/T 1:1-2009:

This part replaces GB/T 18802:1-2011 "Low-Voltage Surge Protector (SPD) Part 1: Surge Protection of Low-Voltage Distribution System

Compared with GB/T 18802:1-2011, the main technical changes are as follows:

---Modified the scope (see Chapter 1, 1:1 of the:2011 edition);

---Modified the normative references (see Chapter 2, 1:2 of the:2011 edition);

---Modified and added some terms and definitions (see Chapter 3, Chapter 3 of the:2011 edition);

---Modified the frequency range, altitude range, humidity range in the use conditions, and increased the pressure range (see Chapter 4,:2011 edition

chapter 2);

---Deleted part of the three-level headings and four-level headings in the classification, revised the corresponding content of the Type I, Type II and Type III tests in Table 2, and changed

Easy to reach is changed to reachable, the temperature range is changed to temperature and humidity range, the classification of overcurrent protection and the power system are deleted

In the relevant part of DC and DC, the failure mode of SPD has been added (see Chapter 5);

---Merge the relevant content of the safety requirements in the technical requirements into electrical performance requirements, mechanical performance requirements and environmental requirements, and add special features

Additional requirements for special SPD design and additional requirements that can be declared by the manufacturer (see Chapter 7);

---Modified the SPD type test requirements table in the general test procedure, the definition of the impulse discharge current used in the I test and its parameters

Number tolerance, 8/20 current waveform, the percentage of the current value of any polarity reversal after the current drops to zero, increasing the thin paper and

The requirements for the use of metal screen grids, the general qualification criteria table for type testing, the qualification criteria and the cross-reference table for type testing:

Alternative test circuit for decoupling network to limit voltage test, delete 8/20 current and 1:2/50 voltage test measurement accuracy

Requirements (see 8:2, 7:1 of the:2011 edition);

---Added an alternative to the durability test of the logo (see 8:3);

---Modified the test method of residual current (residual current) IPE (see 8:4:2, 7:7:5 of the:2011 edition);

---The method for determining Umax in the limit voltage has been added (see 8:4:3);

---Modified the flow chart of the action load test, the action load test of category II and III, the interval time between the two groups of impacts (see

8:4:4, 7:6 of the:2011 edition);

---Modified the requirements of thermal stability test sample preparation and SPD test procedures of only limited pressure components (see 8:4:5:2,:2011 edition

7:7:2:2);

---In the short-circuit current characteristic test and the characteristic under temporary overvoltage (TOV), the test voltage UCS is replaced by URF, and the thin paper and

Gauze coverage requirements (see 8:4:5:3), the short-circuit current characteristic test deletes the SPD whose Ifi is lower than the declared short-circuit withstand capability

Supplementary test for simulating SPD failure mode has been added (see 8:4:5:3:2);

---Added the zero-loss test method in the TOV test caused by the low-voltage system failure (see 8:4:8:1);

---Added the flat quick connect terminal of screw terminal (see 8:5:2:5) and pigtail connection (flying wire) (see 8:5:2:6);

---The specified values for the verification of electrical clearance and creepage distance have been modified, and the relevant content of the material group has been added (see 8:5:3,:2011 edition

7:9:5);

--- Deleted the mobile SPD with flexible cables and wires and its connection and the test of the mobile SPD in the drum (see:2011

Version 7:9:1);

---Modified the rated load current (IL) (see 8:7:1:1, 7:8:2 in the:2011 edition), load side short-circuit characteristic test (see 8:7:1:3,

7:8:3 of the:2011 edition);

---Added the environmental test of outdoor SPD (see 8:7:2), related test of short-circuit SPD (see 8:7:4), and the rate of voltage rise

du/dt measurement (see 8:8:4);

---Added normative Appendix B, Appendix D, Appendix G, Appendix I and informative Appendix A, Appendix E, Appendix F, Appendix I, Appendix J,

Modified the normative appendix C and deleted the original normative appendix C:

This part uses the redrafting method to modify and adopt IEC 61643-11:2011 "Low-voltage surge protectors Part 11: Connecting to low-voltage power supplies

System performance requirements and test methods for surge protectors":

Compared with IEC 61643-11:2011, this part has many structural adjustments: Appendix A lists this part and IEC 61643-

11:2011 chapter number change comparison list:

The technical differences between this part and IEC 61643-11:2011 and the reasons are as follows:

---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments:

The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows:

* Replace IEC 60112 with GB/T 4207 which is equivalent to adopting international standards;

* Replace IEC 60529 with GB/T 4208 which is equivalent to adopting international standards;

* Replace IEC 60695-2-11:2000 with GB/T 5169:11-2017 which is equivalent to adopting international standards;

* Replace IEC 60060-1:1989 with GB/T 16927:1-2011 which is modified to adopt international standards;

* Replace IEC 60664-1:2007 with GB/T 16935:1-2008 which is modified to adopt international standards;

* Replace IEC 61180-1 with GB/T 17627 modified to adopt international standards;

* Added reference to GB 17799:3;

* Removed IEC 61000 (all parts):

---The term "open circuit voltage of the composite wave generator" was added, and the term "voltage protection level" "1:2/50 impulse voltage" "8/

20 Impulse current "complex wave" "SPD breaker", the term "open circuit voltage" is deleted, and the descriptive expression in the term is transformed

Note (see Chapter 3):

---The technical requirements for IPE and operating loads are modified in the technical requirements, and the maximum discharge current (7:6:1:2) requirements are increased: increased

Technical requirements for vibration and shock (7:6:1:3), and appendix F has been added at the same time, specifying the corresponding performance requirements and test methods

(See Chapter 7):

---In order to facilitate the test, an alternative to hexane was added to the durability test of the logo (see 8:3):

---In the test procedure of the short-circuit circuit characteristic test, two cases that do not require further tests are added (see 8:4:5:3:2), the qualification criteria

Added a note to the clause:

---According to my country's situation, the American Wire Gauge (AWG) part in Table 11 and Table 19 has been deleted:

---In the qualification criteria for verifying the clearance and creepage distance test, the expression is added: Table 16 applies to 1), 2) and Table 15

3) (see 8:5:3):

---The original Appendix A has been reworked according to the situation of my country's power distribution system:

---According to my country's situation, the relevant parts of North America and Japan in the original Appendix B have been deleted:

---Informative Appendix F (vibration and shock test) and informative Appendix J (basic limit voltage test) have been added:

This section has made the following editorial changes:

---In order to be consistent with my country's technical standard system, the standard name is changed to "Low Voltage Surge Protector (SPD) Part 11: Low Voltage Power Supply

System performance requirements and test methods for surge protectors";

---In the introduction, relevant expressions of wind power and photovoltaic power generation systems have been added;

---The compilation of the scope chapter was standardized, and the notes to the provisions were added (see Chapter 1);

---Added a note to the term "rated disconnected freewheeling value" (see 3:1:39);

---The note of the tissue used in the test is added to the overview of the general test procedure (see 8:2:1);

--- Note 1 of the instructions on the preparation of the test sample was added to the thermal stability test, and the description of the ambient temperature (8:4:5:2) was added to the Note 2;

--- A note has been added to the qualification criteria of the short circuit characteristic test, which explains "no significant circuit" (see 8:4:5:3:2);

--- Table 15 moves the footnote a in the first column to the second column <=:2000V:

Please note that certain contents of this document may involve patents: The issuing agency of this document is not responsible for identifying these patents:

This part was proposed by China Electrical Equipment Industry Association:

This part is under the jurisdiction of the National Lightning Arrester Standardization Technical Committee (SAC/TC81):

Drafting organizations of this section: Shanghai Meteorological Disaster Prevention Technology Center (Shanghai Lightning Protection Center), Shanghai Electrical Apparatus Research Institute, Xi'an High

Piezoelectric Apparatus Research Institute Co:, Ltd:, China National Accreditation Center for Conformity Assessment, Rheinland Testing and Certification Services (China) Co:, Ltd:, Rheinland Technology

Technology (Shanghai) Co:, Ltd:, Shanghai University, Shenzhen Tiechuang Technology Development Co:, Ltd:, Schneider Electric (China) Co:, Ltd: Shanghai Branch,

Sichuan Zhongguang Lightning Protection Technology Co:, Ltd:, Weidmüller Electric Connection (Shanghai) Co:, Ltd:, Beijing ABB Low Voltage Electric Co:, Ltd:, Guiyang

Gaoxin Yige Electronics Co:, Ltd:, Dekai Quality Certification (Shanghai) Co:, Ltd:, Tianjin Zhongli Aegis Electronic Technology Co:, Ltd:, Shanghai Leixun

Lightning Protection Technology Co:, Ltd:, Xiamen Daheng Technology Co:, Ltd:, Dehesheng Electric (Shanghai) Co:, Ltd:, Xiamen Celte Electronics Co:, Ltd:,

Jiang Hengye Electronics Co:, Ltd:, Shanghai Dianke Zhenhe Intelligent Technology Co:, Ltd:, Changzhou Chuangjie Lightning Protection Electronics Co:, Ltd:, Shanghai Youtai Ocean

Electrical Co:, Ltd:

Introduction

This part of GB/T 18802 describes the safety and performance tests of surge protectors (SPD):

There are three types of trials:

Type I test is used to simulate the impact of part of the imported lightning current: SPD that meets the Type I test method is generally recommended for high exposure locations,

For example: the cable entrance of a building protected by a lightning protection system:

The SPD tested by the Type II or Type III test method can withstand short-lasting shocks:

All SPDs are treated as a "black box" as far as possible during testing:

There are many special requirements for SPD in wind power and photovoltaic power generation systems: SPD reference for wind power generation systems

NB/T 31059, the SPD of the DC side of the photovoltaic system refers to GB/T 18802:31:

Part of GB/T 18802:12 describes the guidelines for the selection and use of SPD in practical situations:

Low Voltage Surge Protector (SPD) Part 11:

Surge protector for low voltage power system

Performance requirements and test methods

1 Scope

This part of GB/T 18802 specifies the characteristics, standard test methods and rated values of low-voltage surge protectors: These electrical appliances include at least

A non-linear element used to limit voltage and discharge surge current:

This section applies to protectors that protect against indirect and direct effects of lightning or other transient overvoltage surges: These appliances are

After assembly, connect to circuits and equipment with AC rated voltage not exceeding 1000V (effective value), 50/60Hz:

Note: In addition to meeting the requirements of this part of the SPD used in wind power generation systems, its special use environmental conditions, continuous peak voltage, etc: refer to the corresponding standard

Claim:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

GB/T 4207 Solid insulating material tracking resistance index and comparative tracking index determination method (GB/T 4207-2012,

IEC 60112:2009, IDT)

GB/T 4208 enclosure protection class (IP code) (GB/T 4208-2017, IEC 60529:2013, IDT)

GB/T 5169:11-2017 Fire hazard test of electric and electronic products Part 11: Glow wire/hot wire basic test method

Glow wire flammability test method (GWEPT) (IEC 60695-2-11:2014, IDT)

GB/T 16927:1-2011 High voltage test technology Part 1: General definition and test requirements (IEC 60060-1:2010,

MOD)

GB/T 16935:1-2008 Insulation coordination of equipment in low-voltage systems Part 1: Principles, requirements and tests (IEC 60664-1:

2007, IDT)

GB/T 17627 High-voltage test technology definition, test and procedure requirements, test equipment for low-voltage electrical equipment

(GB/T 17627-2019, IEC 61180:2016, MOD)

GB 17799:3 General Standard for Electromagnetic Compatibility for Emissions in Residential, Commercial and Light Industrial Environments

3 Terms and definitions, abbreviations and symbols

3:1 Terms and definitions

The following terms and definitions apply to this document:

3:1:1

Surge protector surgeprotectivedevice; SPD

Electrical appliances used to limit transient overvoltage and discharge surge current:

Note 1: The surge protector contains at least one non-linear element: