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131 Articles found

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  • Data Centers Part 1 — The Growing Industry

    Over 30 years ago, I walked into my first datacom room. It provided the network and data interface for a food processing facility. It connected all the plant's office computers, along with providing connectivity to the home office across town.

    It was housed... in a closet. And not a big closet, either.

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  • Data Centers Part 2 — Challenges and Solutions

    In a previous article, I mentioned the first "data center" I ever encountered... a closet in a hallway.

    Times have changed as the sheer volume of data has increased. And, so have the infrastructures that house it. Data centers are vast repositories of pretty much every piece of information used to run and maintain business operations.

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  • Recyclable Enclosures Offer More End-of-Life Options

    With the rise of green building, building professionals have become much more familiar with what goes into the products they specify and install. For example, volatile organic chemicals – more frequently know by the acronym VOCs – have largely disappeared from paint, carpet and other building products due to greater awareness of the health problems they can cause.

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  • Emerson Offers SolaHD K-Rated Transformers to Address Power Harmonics

    Power harmonics have become an increasingly important issue in today’s industrial environment, a result of the growing number of sensitive electronics, high-powered computers and sophisticated production technology employed on many factory floors, production facilities and labs.

    Harmonics are, essentially, current and voltage with frequencies that are not aligned — also known as non-linear loads.

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  • Looking Beyond NEMA and UL Markings When Specifying Enclosures

    In the United States, we’re well aware of a number of marking schemes that indicate how products like enclosures will perform in particular settings. These will include the National Electrical Manufacturers Association (NEMA) rating indicating how resistant a product will be in various wet, dirty or corrosive locations. There might also be a UL marking indicating a standard to which the product has been tested.

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  • Why is Power Quality Important?

    Before we begin to discuss why power quality is important, let's answer a few questions about what it is, what it involves and what affects it.

    From the utility or provider standpoint, the main concern is a consistent and uninterrupted voltage supply. Remember that this is not a constant value, but a voltage range. While we might talk about, for instance, a 120-volt AC supply, in reality that is a nominal value for a range.

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