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 …
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 …
Mixing low voltage (LV) and extra-low voltage (ELV) control voltages in a multicore cable is a common mistake committed by inexperienced design engineers. Combining these control voltages may look good …
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 …
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 …
When Thomas Alva Edison started his electric illuminating company and began the electrical distribution system, he used only one insulated (from earth) conductor and the earth for the return conductor. …