Technical Support

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...

Lightning Protection Grounding vs. Electrical Grounding Grounding systems are indispensable for modern electrical infrastructure, serving as the critical pathway for dissipating fault curren...

SPD Wiring and Installation Requirements under IEC, UL, and Regional Standards 1.Introduction to SPD Standards and Wiring Significance Surge Protective Devices (SPDs) serve as critical s...

What is a Surge Protective Device? A Surge Protective Device (SPD) is a sophisticated engineering solution designed to safeguard electrical systems from transient overvoltages caused b...

Determination of Reference Voltage and Temporary Overvoltage (TOV) in SPD Type Test 1. Definition and Determination of Reference Voltage (UREF) The reference voltage (UREF) is a critical...