Energy and Power
AC Vs. DC
What’s this thing about AC anyway? A little history lesson might be in order. It all started when Edison built the first incandescent bulb and the power station to light it. A big disadvantage of DC electricity immediately revealed itself:… Read more
Feb 08, 2011 | By Edvard Csanyi
Power Substation
Risk and Consequences Of Transformer Fire
The risk of a catastrophic fire with a properly inspected, tested, and maintained transformer is small. Proper maintenance and thorough testing of the transformer will prevent or detect many events that could lead to explosion and/or fire. However, unforeseen events… Read more
Feb 07, 2011 | By Edvard Csanyi
Energy and Power
Electrically Held Contactors – Siemens
Most lighting and heating applications require a contactor to control the loads. One type of contactor is an electrically held contactor, which is similar to a magnetic starter. Unlike a magnetic starter, however, a lighting and heating contactor is designed… Read more
Feb 05, 2011 | By Edvard Csanyi
Low Voltage
Form of separation 2 – Requirements
Form 2 defines overall assemblies which are enclosed to provide protection against contact with any internal live parts or components, and where there is internal separation of the busbars from functional units. The following general conditions apply; Busbars are separated… Read more
Feb 04, 2011 | By Edvard Csanyi
Cables
Electrical Wire – How It’s Made
Wikipedia: Electrical wiring in general refers to insulated conductors used to carry electricity, and associated devices. This article describes general aspects of electrical wiring as used to provide power in buildings and structures, commonly referred to as building wiring. Cant… Read more
Feb 03, 2011 | By Edvard Csanyi
Energy and Power
The Advantages Of Maintaining A High Power Factor
A high power factor eliminates penalty dollars imposed when operating with a low power factor. For many years, most utilities demanded a minimum of 85% power factor as an average for each monthly billing. Now many of these same utilities… Read more
Feb 03, 2011 | By Edvard Csanyi
Electric Motor
Operating Principle Of Three Phase Asynchronous Motors
The operating principle of an asynchronous motor involves creating an induced current in a conductor when the latter cuts off the lines of force in a magnetic field, hence the name “induction motor”. The combined action of the induced current… Read more
Feb 02, 2011 | By Edvard Csanyi
Low Voltage
The Switchboard Design Requirements
The following rules of design have to be implement in the aim to facilitate the assembly and especially the maintenance of the installation. The switchboard must be designed the way to have a clearly visible separation between the 3 following… Read more
Feb 01, 2011 | By Edvard Csanyi
