Limiting transferred earth potentials
The IEEE Green book Std, 142-2007, IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems defines transferred earth potential as the voltage to earth of grounding systems that …
What is an Effective Grounding?
Effective grounding is essential to: Prevent the enclosure of an electrical equipment and its connected conductors rising to a potential dangerously above that of its surroundings or ground. If the …
Counterfeits Can Kill
Every day, counterfeit electrical products are finding their way into our homes, businesses, and public institutions. These fraudulent products pose a serious financial and legal liability to the electrical industry, …
IEEE Std 3002.8 – IEEE Recommended Practice for Conducting Harmonic Studies and Analysis of Industrial and Commercial Power Systems
Introduction This guide discusses the basic concepts involved in studies of harmonic analysis of industrial and commercial power systems. The need for such an analysis, recognition of potential problems, corrective …
IEC 61439 – Relationship between peak current and short-time current
Short-circuit withstand ratings of a switchboard or motor control centre is a measure of its ability to withstand the dynamic and thermal stresses when a fault occurs within or near …
Philippine Electrical Code – Arc-Flash Hazard Warning Requirement
1. Arc-Flash Hazard Warning The requirement of arc-flash hazard warning in the Philippine electrical Code 2017 is stipulated in Section 1.10.17 Arc-Flash Hazard Warning. This section of the PEC requires …