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Title
AC "Ice Cube" Relays Applied for Improved Power Quality
Description
Industrial electrical equipment is often affected by power supply disturbances, commonly attributable to the general-purpose AC relay. Referred to as an “ice cube” relay due its clear plastic cover that resembles a square ice cube, these AC-powered relays may be susceptible to many voltage sags that do not affect other elements of a control system, thus making them the “Achilles heel.” This paper discusses the basics of the relay, documents the power quality issues related to these devices, and includes case study references.
Date
Sep 9, 2009

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Smart Grid: The Tuesday Topic - Smart Grid News - Grid Modernization and the Smart Grid

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If you could design your own smart grid demo, what would it look like?

Three new demonstration projects caught our attention - a smart grid effort in Albuquerque's business district, a rapid recovery transformer study in Texas and a trial involving low voltage current sensor technologies in the UK. They also got us to thinking: At this stage in the smart grid build out, if you could design a demonstration project, what would it entail? That's our latest Tuesday Topic; click for the details.

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