Network Protection and Automation Guide
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 …
ABB Protection Application Handbook
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 …
Negative Sequence Currents – Causes, Effects and 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 …
Protection Against Electric Shock
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 …
Selection of Circuit Breakers
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 …
Impact of Unbalance Voltage on Induction Motors
This paper written by Jawad Faiz, H.Ebrahimpour, P.Pillay, investigates the negative effect of unbalanced voltage upon the losses and efficiency of a three phase squirrel cage induction motor. The financial …