Archive for the ‘Electrical distribution’ Category

Transient process during electric arc furnace capacitor batteries switching

November 13th, 2018 | Make a comment | Posted in Electrical distribution

In this article, your fellow electrical engineer Mile is observing the transient process, during the switch of electric arc furnace capacitor batteries.

In most of the cases, the batteries have some inductive character, besides capacitive, and because of that fact they act as higher harmonics filter.

But in today’s article the case is different. Read Mile’s nice explanations below and don’t forget to comment afterwards…

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Wiring Connections of the Doble to measure insulation on transformers (AC model and impedance measurement)

October 15th, 2018 | Make a comment | Posted in Electrical distribution

megaphone1Hi everyone, it’s Steven Mill again :) After the Megger vs Doble article published on July 2d, here is another article.

Accurately measuring the insulation of an electrical equipment is essential to ensure the operation of the system and to comply with security standards as well.

Therefore, as discussed previously in the Megger vs Doble article, the Doble measurement instrument is the ideal to perform regularly maintenance insulation tests on any transformer, circuit breaker, switch and motors.

In this article, we will examine the basics to understand how to use this instrument.
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Electrical switchboards in 2050: AC or DC?

September 27th, 2018 | 3 Comments | Posted in Electrical distribution
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ac or dc driveNew article / essay by Muhammad, one of our dear senior electrical engineers. With more than 30 years of experience, he sometimes spoils us with great and original articles just like this one.

If you’ve ever wondered what your grandchildren will use between AC and DC, well enjoy your reading! Don’t forget to give your opinion in the comments section.
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Lighting Design Tips

September 18th, 2018 | Make a comment | Posted in Electrical distribution
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megaphone-darkblueLight is so essential in our live, we can’t live without. Light affects everything on earth including plants, animals and also humans. We need light to grow plants, generate electricity (solar energy), for medical uses and for our living (in home, work & etc…) which is called lighting.

In the following paragraphs Yasser an electrical engineer who published few articles in this blog is talking about lighting design considerations and giving guidance for you to facilitate the lighting design process.

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Types of Partial Discharges on gases

August 9th, 2018 | Make a comment | Posted in Electrical distribution

megaphone-bluePartial discharges (PD) are intermittent low intensity electric arcs which are not visible and that take place inside electrical equipments.

Let Carlos (a consultant for a company developing solar PV system installations) tell you more about this topic.

Partial discharges produce damage that on the long term can end up in electrical failure, which is why it is convenient to establish preventive maintenance in order to consider replacement at proper time before the electrical failure takes place.
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