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Two surge arresters might have similar rated voltages, similar MCOV and similar zinc oxide blocks, but still function differently in practice. The reason behind the…

From a distance, an electrical substation, often referred to simply as a “substation,” appears as a fenced yard full of steel frameworks, insulators, and gray…

It’s not easy to open up a medium-voltage circuit that’s still carrying current. As soon as you separate the contacts, an arc appears, and at…

A majority of the overhead distribution lines installed worldwide utilize an inexpensive but very effective device called an expulsion fuse cutout which is placed on…

A pole mounted transformer is the small, gray tank that you spot high on a utility pole. This device reduces medium voltage carried by the…

Once you have an understanding of what a gang-operated air break switch is, the next logical question is practical – what ratings to use when…

You’ve seen them either on distribution substations or along medium-voltage feeders. It’s a bunch of three insulators sitting side by side on a steel frame…

If you look closely at an overhead distribution line, you would see a gray porcelain or polymer insulator, which holds a tubular fuse cutout above…

Having arable land or enough capital is just the beginning. Understanding how solar farms function means going through a long process of making decisions about…

Most explanations of how solar farms work stop at the panels: sunlight strikes a silicon surface, electrons move and electricity is generated. This is correct…

The 150 kVA transformer has a full-load amperage of around 180 amps per phase for a three-phase voltage of 480V or roughly 416 amps when the…

Using a high voltage outdoor current transformer, one can track what occurs on a live 11 kV or 33 kV or even 132 kV line…