IEC 60364-5-56 Safety Services (Emergency Systems)
Safety service is defined in IEC 60364-5-56 as an electrical system for electrical equipment provided to protect or warn persons in the event of a hazard, or essential to their …
Earth-fault Factor – Importance in Equipment Selection
Power frequency withstand is one of the criteria in the selection of electrical equipment rating. The selection of the appropriate power-frequency withstand level is related to the earth fault factor …
IEEE 399 – Recommended Practice for Industrial and Commercial Power Systems Analysis
IEEE 399 is commonly known as the Brown Book in the Color Book series. The Brown Book supplements the rest of the color book series. Its practical and general treatment …
Lightning Damage to Services
In this article, I have listed the possible damage that lightning strike could impart into structures. In addition to this, lightning could likewise disrupt services. IEC 62305-1 provides a list …
System Voltage Classes (ANSI)
In ANSI C84.1-2011, Clause 3, system voltage classes were explained Low Voltage (LV) A class of nominal system voltages 1000 volts or less. Medium Voltage (MV) A class of nominal …
Electrical Power System Studies
Power system studies vary significantly In each design process depending on the purpose of the project. It would be better to have a complete study on your project rather than …