Electrical generator protection

November 22nd, 2016 | 1 Comment | Posted in Electrical distribution

Jesús Pérez Díaz is an Electrical Engineer born and raised in Venezuela, specialized in Power System and experienced as Project Engineer for Oil&Gas industry. Also focused on Electrical Protection, design and operation of Power systems, he naturally wrote for us an article about electrical generator protection.

Enjoy! And remember, if you want your article to be published in the blog, reach us by mail.

One of the first 3-phase generators

One of the first 3-phase generators (1887) | image: edisontechcenter.org

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How non contact AC voltage testers work?

November 18th, 2016 | Make a comment | Posted in Electrical distribution
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A non-contact voltage test provides an easy and safe way of ensuring that electrical conductors do not have power without having to touch them.

The tester works by detecting the electric fields associated with AC voltages. These fields are usually present near the live conductors, hence the reason why there is no requirement for direct contact with the conductors.

The tester can be used by professional as well as consumers who can use the gadget around the house.

 voltage testers - Testing power cable as a voltage

Figure 1: Testing power cable as a voltage | image: o-digital.com

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Should I replace my electrical system?

November 14th, 2016 | Make a comment | Posted in Others
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Last time, Pablo, a member of our community did a comparison between old and new electrical installations. This time he will analyze what are the most common problems encountered in electrical installations and how to solve them in order to get a better installation.

Enjoy and you too send us articles by mail if you want to be published on the blog!

Among the most common problems, you can find:

Circuit breaker that triggers very often

There are several causes; poor design of the electrical system that causes the circuit demand is greater than the capacity of the breakers, also the end of the useful life of the interrupter. Likewise corrosion, dust, animals can cause hot spots and thus the trip; serious problems of earth leakage currents and other causes.

Circuit breaker that triggers

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Low voltage circuit breakers: differences

November 8th, 2016 | Make a comment | Posted in Electrical distribution
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 Low voltage circuit breakers basics

Back to basics with our fellow member Pablo who chose to tell us about the different types of low voltage circuit breakers… Enjoy!

Every day there is more variety of electrical products including circuit breakers, sockets, switches, and others. Regarding breakers, they vary according to the manufacturer, which has led me a couple of questions:

What are the differences between them? Are they interchangeable? Why choose a particular manufacturer? What are the types? I will start with low voltage circuit breakers.
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Peak Power and effect on electricity prices

November 3rd, 2016 | Make a comment | Posted in Others
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The electricity prices change frequently, sometimes many times a day. This is largely due to the fact that the cost of generation is based on the real-time demands.

When the demand goes high, which usually happens when people and industries are using maximum power, the peaking plants are operated to meet the difference between the base load and the peak. These are usually more expensive to run, meaning that the electricity generated during this time is also charged at a higher rate.


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