Is there any basis for whether SPD should be configured? What are the standards?

1 : What is the role of SPD ?

Lightning strikes, high-power equipment start and stop, and electrostatic discharge will generate instantaneous overvoltage (surge), which is easy to cause equipment damage. The SPD is installed at the front end of the equipment to be protected. When a surge occurs, the SPD can quickly conduct, discharge the surge to the ground, and limit the voltage to a safe level, thereby protecting the back-end equipment.

2 : Is there any basis for SPD configuration? What are the standards?

Whether to install SPD is generally considered from two aspects.

One is the probability of equipment being invaded by power surges

Such as the number of local thunderstorm days, the environment where the system is located, and the installation location of the equipment.

The second is the importance of equipment

Such as the value of the device itself, the security requirements of the system, the importance of the device in the system control, etc.

SPD configuration related standards:

1. General standards

GB/T21714.4-2008 (IEC 62305-4 2006) Lightning protection Part 4: Electrical and electronic systems in buildings;

GB50057-2010 Building Lightning Protection Design Code;

GB50343-2012 Technical Specification for Lightning Protection of Building Electronic Information System.

2. Industry standards

SHT3164-2012 Design Specification for Lightning Protection Engineering of Petrochemical Instrument System;

YD5068-1998 Mobile communication base station lightning protection and grounding design specifications;

TB10180-2016 Technical Specification for Railway Lightning Protection and Grounding Engineering;

DLT381-2010 Technical Guidelines for Lightning Protection of Electronic Equipment.