What is an Electrical Substation? (& the Main Types)

Electric high-power station and powerful transformers

According to a 2016 article from foreignpolicy.com, there are over 55,000 substations and over 450,000 miles of high-voltage transmission line in the United States today. These substations play a critical role in effectively delivering power to residencies and commercial buildings across the country every day.

Substations exist as part of the larger electrical grid system to transform high voltage into low voltage and vice versa. These “middle man” stations work to deliver power from the main generators to the end user.

Step up and step down substations. As mentioned above, a substation’s main function is to transform voltage upon receipt for delivery. Step up substations transform low voltage to high voltage, while step down substations transform high voltage to low voltage.

Distribution substation. Nearest to the end user, these are necessary to deliver low levels of voltage for residential and commercial needs. In most scenarios, these stations will be fed by the step down substations.

Indoor, outdoor and underground. Substations are built in one of these three main environments. In all cases, lineman are responsible for the daily upkeep and intermittent restoration needs. Lineman are an integral part of the success of these 55,000 substations nationwide and the electrical grid as a whole.

For more on substations, visit osha.gov, or reach out to the expert team of technicians at Electro Industries. Users worldwide depend on EIG power meters to monitor power information within substations, industrial facilities and commercial buildings.

January 28, 2019

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Electro Industries believes that quality is our MOST IMPORTANT company goal. To achieve that goal, we provide a multipoint approach to quality. EIG uses advanced standards, from the purchasing of components to the final shipping of products, to insure that our instruments are free from defects when shipped and operate for many years in service. We provide factory tours and have been know to impress people quite often.

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EIG meters utilize brand-name, industrial temperature components. They receive 100% component insertion inspection, automated computer controlled testing, temperature deviation-based accelerated life burn-in testing and extensive 2.5 KV dielectric testing. We strive to achieve low failure rates by using comprehensive quality-based design and manufacturing techniques. We test extensively so that users can be confident that when they receive and EIG meter, it is one of the best in the industry.

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