1. What is a contactor? Contactor (also known as contactor) is a low-voltage electrical device, often used to perform switching of power circuits, especially in applications requiring switching of large…
A star delta starter is used for starting 3 phase induction motors, minimizing initial electrical overload by starting in a ‘star’ configuration and then switching to ‘delta’ after reaching a…
Recently, we had to face an unexpected situation related to three phase network. Our factory was cut by a thief. At first, the thief only wanted to cut the ground…
Sizing a photovoltaic system for a stand-alone photovoltaic power system involves a five-step process which will allow the photovoltaic system designer or user to accurately size a system based on…
Passive electronic componens are indispensable components in electrical circuits. A simple electric circuit consists of a source (such as a battery),wires as conducting medium and a load (such as a…
Recently, there has much discussion and post on the subject of power quality. Whereas in the past, power received from the electric utility and use by an industry plant was…
Having such motors, which designing to operate from a single phase supply, manufacturing for many applications in home, offices, factories, workshop etc. Since the performance requirement of the various application.…
I. What is the power factor (PF)? 1.1. Special electrical requirement of inductive loads Most loads in modern electrical distribution systems are inductive Examples include motors, transformers, gaseous tube lighting…
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