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 …
Implementing Type 2 Coordination to Improve the Performance of the Motor Control Center
This paper presents the criteria in the selection and coordination of motor control centers (MCCs) components to comply with the requirements for motor service continuity in the most of industrial …
Fundamentals of a Motor Thermal Model and its Applications in Motor Protection
This paper discusses the fundamentals of a motor thermal model and its mathematical interpretation and physics for the different stages of motor operation such as overload, locked rotor, too frequent …
Low Voltage Three Phase AC Motors Protection – Part 1
This article will be divided into several sections to discuss the control of three (3) phase AC motors including protective features available for the control of starting and operating this …
Selective Coordination According to Philippine Electrical Code 2017 Edition
The Philippine Electrical Code defines Selective Coordination as “Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the choice of overcurrent protective devices …