Intelligent Electronic Devices Electrical protection is as fundamental to the generation, transmission and distribution of electricity as generators, transformers and transmission lines. A couple of decades ago microprocessor based relays …
The “Network Protection and Automation Guide” (NPAG) is a widely recognized reference book in the field of electrical network protection and control. Before being renamed to Areva, it was known …
The ABB Protection Application Handbook in the series of handbooks within the LEC support programme of BA THS BU Transmission Systems and Substations. This handbook covers most aspects of protection …
What is a Negative Sequence Current? Negative sequence current is defined as a type of unbalanced current that occurs in a three-phase electrical system. In a balanced three-phase system, the …
Electric Shock Electric shock is defined as a dangerous physiological effect resulting from the passage of electric current through a human body or livestock. A useful reference document is British …
There are different criteria in the selection of circuit breakers including voltage, frequency, interrupting capacity, continuous current rating, and unusual operating conditions. This article will give a step by step …