Energy and Power
Protective Grounding Requirements
Each region shall implement procedures to ensure the adequacy of protective grounds and shall periodically review grounding practices at each facility to determine the proper size, length, and number (if parallel grounds are required) of protective grounds. Regions shall maintain… Read more
Mar 19, 2011 | By Edvard Csanyi
Energy and Power
Tesla’s death, New York Times 1943
Tesla died alone in the hotel New Yorker of heart failure, some time between the evening of January 5 and the morning of January 8, 1943. Despite selling his AC electricity patents, Tesla was essentially destitute and died with significant… Read more
Mar 11, 2011 | By Edvard Csanyi
Energy and Power
How circuit breaker trip unit works?
In addition to providing a means to open and close its contacts manually, a circuit breaker must automatically open its contacts when an overcurrent condition is sensed. The trip unit is the part of the circuit breaker that determines when… Read more
Mar 10, 2011 | By Edvard Csanyi
Energy and Power
Calculating lightning strike distance
Return stroke current magnitude and strike distance (length of the last stepped leader) are interrelated. A number of equations have been proposed for determining the striking distance. The principal ones are as follows: S = 2 x I + 30(1−e… Read more
Mar 09, 2011 | By Edvard Csanyi
Energy and Power
Early years of Nikola Tesla
Nikola Tesla was born “at the stroke of midnight” with lightning striking during a summer storm. He was born in Croatia in the Austro-Hungarian Empire. The midwife commented, “He’ll be a child of the storm,” to which his mother replied,… Read more
Mar 05, 2011 | By Edvard Csanyi
Energy and Power
How to improve the power quality with harmonic filters
In electrical plants the loads draw from the network electric power (active) as power supply source (e.g. personal computers, printers, diagnostic equipment, etc.) or convert it into another form of energy (e.g. electrical lamps or stoves) or into mechanical output… Read more
Mar 01, 2011 | By Edvard Csanyi
Energy and Power
Protection Relay – ANSI Standards
In the design of electrical power systems, the ANSI Standard Device Numbers denote what features a protective device supports (such as a relay or circuit breaker). These types of devices protect electrical systems and components from damage when an unwanted… Read more
Feb 22, 2011 | By Edvard Csanyi
Energy and Power
Technology Innovation Is Everybody’s Business!
For close to 10,000 years, science and technology have been at the heart of economic growth and social prosperity. From the agricultural revolution to the information revolution, advances in society have been underpinned by new discoveries and their innovative use… Read more
Feb 18, 2011 | By Edvard Csanyi
Energy and Power
Electrical Engineering Job – How to Find It?
Finding a job is not always as easy as expected. This article will list a few places to look for jobs in the field of electrical engineering. Contact electrical engineering firms in your area. Even if they do not advertise… Read more
Feb 09, 2011 | By Edvard Csanyi
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
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
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
Energy and Power
How To Reduce Energy Cost?
The main motivation for decision makers to take an interest in energy control solutions is economic efficiency. When deciding whether to invest in improvement work, the manager of a building, for example, must be convinced that the operation will produce… Read more
Jan 28, 2011 | By Edvard Csanyi
Energy and Power
Grounded Systems
Grounded systems are equipped with a grounded conductor that is required per NEC Section 250- 23(b) to be run to each service disconnecting means. The grounded conductor can be used as a current-carrying conductor to accommodate all neutral related loads…. Read more
Jan 26, 2011 | By Edvard Csanyi
Energy and Power
Ecodial 3 – FAQ’s
Remark : You may renumber the functional names with the Automatic numbering of the View menu. Version 3.2 of Ecodial works from a cable database. If such a cable exists in the database, then you can use it. The short… Read more
Jan 22, 2011 | By Edvard Csanyi
