GB/T 43022.2-2023Railway applications - DC surge arresters and voltage limiting devices - Part 2: Voltage limiting devices (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting:

This document is Part 2 of GB/T 43022 "Rail Transit DC Arresters and Voltage Limiting Devices": GB/T 43022 has been the following sections were published:

---Part 1: Gap-free metal oxide surge arresters;

---Part 2: Voltage limiting device:

This document, together with Part 1 of GB/T 43022, replaces GB/T 25890.5-2010 "Direct Current Opening of Rail Transit Ground Installations":

Related Equipment Part 5: DC Arrester and Low Voltage Limiter", compared with GB/T 25890.5-2010, except for structural adjustments and editorial changes in addition, the main technical changes are as follows:

a) Changed the scope (see Chapter 1, Chapter 1 of GB/T 25890.5-2010);

b) Added terms and definitions (see Chapter 3);

c) Changes in marking and classification (see Chapter 4, 5:1, 7:1 of GB/T 25890.5-2010);

d) The conditions of use have been changed (see 5.2, 7:2:4 of GB/T 25890.5-2010);

e) Added general features (see 5.3);

f) Changed requirements (see 5.4, 7:3 of GB/T 25890.5-2010);

g) Added electrical characteristics (see 5.5);

h) Added lightning protection (see 5.6);

i) Added command and control (see 5.7);

j) The inspection rules and test methods have been changed (see Chapter 6, 7:4 and 7:5 of GB/T 25890.5-2010);

k) The preferred value has been changed (see Appendix A, 7:2:1, 7:2:2, and 7:2:3 of GB/T 25890.5-2010):

This document is modified to adopt IEC 62848-2:2019 "Rail transit DC arresters and voltage limiting devices - Part 2: Voltage Limitation" Device":

Compared with IEC 62848-2:2019, this document has made the following structural adjustments: Chapter 6 corresponds to Chapter 6 of IEC 62848-2:2019:

Chapter 7, of which 6:2:1 and 6:3 correspond to 7:1 of IEC 62848-2:2019, 6:14 corresponds to 7:2 of IEC 62848-2:2019, and 7:3 is deleted:

There are technical differences between this document and IEC 62848-2:2019: Use vertical single words in the outer margins of the clauses involved:

The line (|) is marked: The specific technical differences and their reasons are as follows:

---Replaced IEC 60529:1989 (see 6.11) and GB/T 1402-2010 with normatively cited GB/T 4208-2017 Replaced IEC 60850:2014 (see 6.6:2, 6:10:2), GB/T 16422.1 replaced ISO 4892-1 (see 6.12), GB/T 16422.2 replaces ISO 4892-2 (see 6.12), GB/T 16422.3 replaces ISO 4892-3 (see 6.12), GB/T 18802.311 replaces IEC 61643-311 (see 5.4:2, 6:2:2:3), GB/T 43022.1 replaces IEC 62848-1 (See 5.6), GB/T 32350.1-2015 replaces IEC 62497-1 (see 5.2:1, 5:2:2), GB/T 32347.2-2015 replaces Changed to IEC 62498-2 (see 5.2:1) to adapt to my country's technical conditions and increase operability:

---Added the term "multi-stage setting" (see 3.20), corresponding to the technical requirements in the text:

---Deleted the terms "protection level" and "IP code" (see Chapter 3), which are general terms:

---Change "recoverable under certain conditions" to "depending on the size of the passing current" (see Table 1) and clarify the influencing factors:

---Deleted content that can be agreed upon by "manufacturers" and "users" (see Table 1, 5:2:3, 5:6, 5:7:2, 6:10:2), clear requirements and convenience use:

---Deleted the optional requirement for voltage limiting device category information in the mark (see 5.1), clarifying the requirements:

---The upper limit of ambient temperature is changed to 45°C (see 5.2:1, 5:2:3) to adapt to my country's national conditions:

--- Added requirements that malfunction of the device caused by overvoltage should not occur during the contactor breaking process (see 5.4:3): actual operations and Field tests show that the voltage limiting device generates hundreds of volts of overvoltage during the contactor breaking process, causing the station or related equipment to be damaged:

In the event that the voltage limiting device of a neighboring station malfunctions, this requirement is added to avoid the above situation:

---Added the requirement that the action time, voltage, and number of actions of the voltage limiting device should be set using multi-stage settings (see 5.4:3): Multi-segment the fixed value is conducive to reducing the number of actions of the voltage limiting device, and is one of the measures to solve the frequent actions of the voltage limiting device:

---Change "should have the following characteristics and measurement display" to "should have the following characteristics and measurement display" (see 5.7:1): involved in the article Characteristics and measurement display are common functions of voltage limiting devices in my country, so this change is made to comply with the current application status in my country and to be unified:

One request:

---Change the "device in a closed state for a long time, with the final parameterization level at level 2 and above" in the alarm record to "device disconnection and "The number of segments corresponding to multi-segment settings" (see 5.7:3), in order to comply with the actual application habits of voltage limiting devices in my country:

---Change "Exceeds the given number of actions, and the final parameterization level is level 2 and above" in the alarm record to "Exceeds the given actions the number of times, the number of times is set to 3 times and above" (see 5.7:3): In my country, the setting of the number of actions of the voltage limiting device is generally as follows:

It will be locked after 3 actions within a certain period of time, so this change is made to make the alarm record consistent with the action settings in my country:

---Change "type inspection" to "inspection rules and test methods" (see Chapter 6) to adapt to my country's national conditions:

---Added type inspection requirements (see 6.1) to adapt to my country's national conditions:

---Added terms corresponding to inspection classification and technical requirements (see Table 2) to adapt to my country's national conditions:

---Change "The frequency range that should be used is 45Hz~65Hz" to "The frequency range that should be used is 45Hz~55Hz" (see 6.10:2), so it is consistent with GB/T 16927.1 and conforms to the actual situation of my country's power system:

---The maximum I2t value of the short-time current withstand capability of the voltage limiting device has been changed from 625kA2s to 1200kA2s (see

Table A:4), to adapt to my country's national conditions:

---The maximum closing capacity value of the voltage limiting device is changed from 50000A to 100000A (see Table A:6) to adapt to my country's national conditions:

The following editorial changes have been made to this document:

---Change the working mode of the voltage limiting device (VLD) as Note (see Chapter 1);

---Deleted the note for term 3:4 (see 3.4);

---Deleted the note in Table 1 (see Table 1);

---Change "nominal trigger voltage and non-trigger voltage" in test item 1 of Table 2 to "trigger voltage and non-trigger voltage" (see Table 2);

---Change "nominal trigger voltage UTn and non-trigger voltage UW" to "trigger voltage and non-trigger voltage" (see 6.2);

---Change "trigger and instantaneous trigger voltage test" to "nominal trigger voltage and instantaneous trigger voltage test" (see 6.2:3:3, 6:2:4:3);

---Deleted the descriptive content of the test purpose (see 6.4:1, 6:7);

---References changed:

Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:

Introduction

In the field of rail transit, DC arresters and voltage limiting devices are necessary safety protection components in the DC system: DC lightning protection the device is applied to the power input end of the equipment that is likely to be struck by lightning: It discharges the lightning energy into the ground to protect the system: DC gapless metal oxide with its unique performance advantages and mature manufacturing technology, lightning arresters have become the necessary overvoltage protection for DC systems in the rail transit field:

Equipment; the voltage limiting device is used to protect the DC traction power supply system from electric shock and is an important safety protection device for the traction power supply system:

GB/T 43022 is intended to consist of two parts:

---Part 1: Gapless metal oxide surge arresters: The purpose is to specify environmental and usage requirements and classify them from design (design A: Design B), performance parameter classification (discharge impact characteristic parameters, charge transfer capability, protection voltage level, etc:), key component classification Specifies test verification methods and corresponding requirements from multiple angles (jacket materials, etc:) for the design, manufacture and use of DC arresters Provide norms and basis:

---Part 2: Voltage limiting device: The purpose is to standardize and unify the working conditions and characteristics of urban rail transit voltage limiting devices:

Safety, test and other requirements, providing specifications and basis for the design, manufacture and use of urban rail transit voltage limiting devices:

Rail transit DC surge arresters and voltage limiting devices Part 2: Voltage limiting devices

1 Scope

This document specifies the categories, signs, conditions of use, general characteristics, basic requirements, electrical characteristics, Rules for lightning protection, command and control, and inspection, describe test methods for voltage limiting devices in urban rail transit:

This document is applicable to the requirements of GB/T 28026 on protection measures against electric shock and protection against stray current:

Voltage limiting device (VLD) used in current pulling systems:

Note: The working method of VLD is to connect the return rail of the DC traction power supply system to the grounding system or to the conductive parts in the overhead contact network area or the receiver area:

Pick it up:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations for undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document:

GB/T 1402-2010 Rail transit traction power supply system voltage (IEC 60850:2007, MOD) GB/T 4208-2017 Enclosure protection level (IP code) (IEC 60529:2013, IDT) GB/T 16422.1 Plastic laboratory light source exposure test methods Part 1: General principles (GB/T 16422.1-2019, ISO 4892-1:2016,IDT) GB/T 16422.2 Plastic laboratory light source exposure test methods Part 2: Xenon arc lamp (GB/T 16422.2-2022, ISO 4892-2:2013,IDT) GB/T 16422.3 Plastic laboratory light source exposure test methods Part 3: Fluorescent ultraviolet lamp (GB/T 16422.3-2022,ISO 4892-3:2016,IDT) GB/T 18802.311 Low-voltage surge protector components Part 311: Performance requirements and test circuits for gas discharge tubes (GDT) (GB/T 18802.311-2017,IEC 61643-311:2013,IDT) GB/T 25890.1-2010 DC switchgear for rail transit ground installations Part 1: General provisions (IEC 61992-1:

2006,IDT)

GB/T 25890.7-2010 DC switchgear for rail transit ground installations Part 7-1: DC traction power supply system Application guide for measuring, control and protective devices (IEC 61992-7-1:2006, IDT) GB/T 25890.8-2010 DC switchgear for rail transit ground installations Part 7-2: DC traction power supply system Isolation of current transducers and other current measuring equipment with measuring, control and protective devices (IEC 61992-7-2,:2006, IDT) GB/T 25890.9-2010 DC switchgear for rail transit ground installations Part 7-3: DC traction power supply system Isolation of voltage transmitters and other voltage measuring equipment with measuring, control and protective devices (IEC 61992-7-3,:2006, IDT) GB/T 28026.1-2018 Electrical safety, grounding and return flow of rail transit ground installations Part 1: Electric shock protection measures (IEC 62128-1:2013, MOD) Note: There is no technical difference between the quoted content of GB/T 28026.1-2018 and the quoted content of IEC 62128-1:2013:

GB/T 28026.3-2018 Electrical safety, grounding and return current of rail transit ground installations Part 3: AC and DC traction Interaction of power supply systems (IEC 62128-3:2013, MOD)