Paralleling of Generators – Application Guide
Paralleling of generators is the synchronous operation of two or more generator sets connected together on a common bus in order to provide power to a common load. Paralleling equipment …
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 …
Importance of Slip in Induction Motors
Slip is an important characteristic of an induction motor. Without slip, the induction motor will not be able to perform its allocated task. Slip is the difference between an induction …
IEEE Std 80 Step Potential and Touch Potential Calculation
Potential Hazards Step potential is the voltage difference between the feet of a person near an energized, grounded object. A person on the ground is subjected to the risk of …
Comparison of NEMA 250 Enclosures and IEC 60529 Degrees of Protection (IP Code)
This document “A Brief Comparison of NEMA 250—Enclosures for Electrical Equipment (1000 Volts Maximum) and IEC 60529—Degrees of Protection Provided by Enclosures (IP Code) is a NEMA Standards Publication. In …
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 …