1. Scope of Application

This standard specifies the testing items, testing requirements and methods, testing cycles, testing procedures, and the organization and reporting of testing data for building lightning protection devices.

. This standard is applicable to the detection of lightning protection devices in buildings. The following situations do not fall within the scope of this standard: a) railway systems; b) vehicles, ships, aircraft, and offshore installations; c) Underground high-pressure pipelines, pipelines, power lines, and communication lines that are not connected to buildings. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB 18802.1-2011 Low Voltage Surge Protectors (SPDs) - Part 1: Performance Requirements and Test Methods for SPDs in Low Voltage Distribution Systems (IEC 61643-1; 2005, MOD) GB/T 18802.21 Low Voltage Surge Protectors: Part 21: Surge Protectors (SPDs) for Telecommunications and Signal Networks - Performance Requirements and Test Methods (IEC61643-21: 2000,1DT) GB 50057-2010 Code for Design of Lightning Protection of Buildings 3 Terminology and Definitions GB 18802.1-2011, The terms and definitions defined in GB 50057-2010 and the following apply to this document. For ease of use, the following are repeated terms and definitions in GB 18802,1-2011 and GB 50057-2010. 3.1 Lightning protection system; LPS is used to reduce material damage and personal injury caused by lightning strikes on or near buildings, consisting of external and internal lightning protection devices. [GB 50057-2010, Definition 2.0.5] 3.2 Grounding Earth; Ground is an intentional or unintentional conductive connection that allows circuits or electrical equipment to be connected to the ground or to a larger conductive body that replaces the ground. [GB/T 19663-2005, Definition 5.23] Note: The purpose of grounding is to: a) make the conductor connected to the ground have a potential equal to or similar to that of the ground (or a conductive body that replaces the ground); b) Guide incoming current into and out of the earth (or a conductive body that replaces the earth)