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GB/T 37048-2018Technical specification for lightning protection of expressway electromechanical systems (English PDF)

高速公路机电系统防雷技术规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 28, 2018

Implementation date

July 1, 2019

Scope

GB/T 37048-2018 is the English-translated version of 高速公路机电系统防雷技术规范.

GB/T 37048-2018 sets out how the electromechanical systems of Chinese expressways are protected against lightning, covering monitoring, communication, toll, power distribution, lighting and tunnel equipment.

It grades the areas crossed by the road by thunderstorm days, divides the installations into lightning protection zones and lays down design and construction requirements for direct lightning protection and for protection against the lightning electromagnetic pulse, through equipotential bonding, magnetic shielding, isolation interfaces and surge protective devices (SPD).

It also covers the detection and maintenance of the lightning protection devices, with annexes on thunderstorm days in major cities, zone division, M-type bonding, SPD classes and impulse withstand voltages.

It applies to new, rebuilt and expanded expressways and may be used as a reference for other roads. It was issued on 28 December 2018 and has applied since 1 July 2019.

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Document preview — GB/T 37048-2018

National Standard of the People's Republic of China

ICS: 91.120.40
Classification: M 04

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 General Provisions
5 direct lightning protection
6 lightning electromagnetic pulse protection
6.1 Equipotential bonding
6.2 Magnetic shielding
6.3 Isolation interface
6.4 Surge Protector (SPD)
7 Detection and maintenance of lightning protection devices
Appendix A (informative appendix) Annual average thunderstorm days in major cities nationwide
Appendix B (Normative Appendix) Division of Lightning Protection Zones (LPZ)
Appendix C (informative) Schematic diagram of M-type equipotential bonding method
Appendix D (informative) Classification of SPD
Appendix E (informative) Impact voltage rating (Uw) for low-voltage electrical and electronic equipment
Reference

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard stipulates the division of thunderstorm day grades in the area where the electromechanical system of the expressway is located, the division of lightning protection zones, direct lightning strikes and lightning Requirements for design and construction of magnetic pulse protection, detection and maintenance of lightning protection devices.

This standard is applicable to lightning protection design, construction, inspection and maintenance of new, rebuilt and expanded highway electromechanical systems. Other grade roads Lightning protection design, construction, inspection and maintenance of electromechanical systems can be used as reference.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 18802.1 Low-voltage surge protectors (SPD) Part 1: Performance requirements and test for surge protectors of low-voltage distribution systems Test method

GB/T 18802.21-2016 Low voltage surge protectors - Part 21: Surge protector (SPD) performance for telecommunication and signal networks Requirements and test methods

GB/T 18802.31-2016 Low-voltage surge protectors for special applications (including DC) - Surge protectors - Part 31: Surge protector (SPD) performance requirements and test methods for volt systems

GB/T 21431 Building lightning protection device testing technical specification

GB/T 21714.3-2015 Lightning protection - Part 3: Physical damage and dangers of buildings

GB/T 21714.4-2015 Lightning protection - Part 4: Electrical and electronic systems in buildings

GB/T 33588.2-2017 Lightning protection system components (LPSC) Part 2: Requirements for conductors and earthing poles

GB 50057-2010 lightning protection design code for buildings

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Expressway electromechanical system

General name for highway monitoring system, communication system, toll system, power distribution system, lighting system (including bridge) and tunnel electromechanical system.

3.2 Tunnel electromechanical system

Monitoring facilities, communication facilities, power distribution facilities, lighting facilities, ventilation facilities and fire fighting facilities in tunnels and tunnel entrances and exits General name.

3.3 Monitoring system

An information system that provides information for traffic control systems and various monitoring devices that are deployed at appropriate locations along the route.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 18802.1

Similar standards

GB/T 47028-2026|GB/T 47348-2026|GB 6830-2025|GB/T 46477-2025|GB/T 21431-2023|GB/T 19663-2022

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