Technical Support

1.The Hidden Risk of “High-Potential Back strike” in Multi-Grounding Systems In lightning protection engineering, the moment which a lightning current dissipates into the ground, intense transie...

1 Background The project is implemented at Guangzhou Southern Power Grid -- Nansha Power Supply Bureau, a critical outdoor power facility responsible for regional power transmission and distribut...

1 Background This project is deployed in the REPSUN core equipment room area. The project site faces two major protection challenges. It has extremely limited installation space alongside stringe...

In the Code for Design of Low Voltage Electrical Installations, the PEN conductor in TN-C systems is subject to extremely stringent control requirements. Electrical codes worldwide explici...

According to IEC 61643-01:2024, a Surge Protective Device Assembly (SPDA) is an integrated unit consisting of one or more Surge Protective Devices (SPDs) combined with internal or external disconnec...

How to Select Uc for SPDs (According to IEC 61643) The Maximum Continuous Operating Voltage (Uc) is a critical parameter when selecting a Surge Protective Device (SPD). It ensures the SPD remain...

Earthing Guide for Surge Protective Devices: Ensuring Effective Surge Energy Dissipation Surge Protection Devices (SPDs) are critical components in safeguarding electrical and electronic sys...

How Does a Lightning Warning System Work? Lightning poses a significant threat to human safety, critical infrastructure, and industrial operations, causing fatalities, injuries, and substant...

NB/T 42150-2018: Specific protective devices for low-voltage surge protective devices (SSD) – Type test Core Purpose This Chinese energy industry standard establishes type test requireme...

Surge Protective Devices (SPD) Degradation    Surge Protective Devices (SPDs) are critical for safeguarding electrical and electronic systems against transient overvoltages caused by...