GE IAC and ABB HU Transformer Protective Relays in Nuclear Power Plants

Protective relay panel, photo courtesy North American Switchgear, whose website it located at http://www.naswgr.net/Digital, microprocessor-based protective relays aren’t yet a common staple in nuclear power plants because of the trepidation associated with installing sensitive solid-state circuitry in safety-critical applications. This trend, however, is slowly changing. Until then, though, it is useful to become aquainted with the older kinds of relays still in operation.

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Cadwelds: what they are, how they work

cadwelding picture

Cadweld is a term you hear often, especially when working on equipment grounding designs. But what exactly is it, and how does it work? Sometimes, a short video offers the best form of explanation . . . . Continue reading “Cadwelds: what they are, how they work”

Simple ways to enhance a mod package

The mod package brings the entire design together. That’s why it’s called a “package.” But just because all of the pieces are together in one place, doesn’t mean your package will be high quality — especially if you neglect this aspect . . . . Continue reading “Simple ways to enhance a mod package”