Robert Ransone

Insulator Product Manager Hubbell Power Systems, Inc.

Recent Posts

The Nature and Manifestation of Corona Discharge

Posted by Robert Ransone on Dec 4, 2018 2:51:00 PM

In physics, the glow and audible event occurring when an insulator is exposed to excessive voltages is called a corona. It may also be known in the electric industry as “corona discharge,” “plume discharge,” “brush discharge” or “glow discharge.”

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Topics: Insulators

Color Banding on Toughened Glass Bell Insulators

Posted by Robert Ransone on Aug 16, 2018 3:12:00 PM

Toughened glass bell insulators are easily identified through the application of color bands on the caps, signifying the most common strength class products. 

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Topics: Insulators

Selecting Zinc Sleeves for Toughened Glass Bell Insulators

Posted by Robert Ransone on Jun 29, 2018 10:50:00 AM

When designing a high voltage transmission line utilizing toughened glass bell insulators, engineers must consider whether or not to specify a zinc sleeve to accompany the insulator pins. Although the upfront cost is slightly more than the forged steel pin, those who are new to the use of toughened glass bells may ask what justifies a slightly higher expense for the addition of this feature.

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Topics: Insulators