Ultrasonic Inspections

When Ultrasonic Testing Is Used

 

Ultrasonic testing makes it possible to inspect equipment where infrared cannot. Because sound waves travel through small openings—such as door gaps and ventilation points—early-stage electrical faults including arcing, tracking, and corona can be detected long before heat is present.

How Testing Is Performed

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Ultrasonic instruments are placed near access points to capture the distinct sounds of internal electrical activity.

For fully sealed equipment, a capped inspection port can be installed during a scheduled outage—providing safe, efficient access for future testing without interrupting operations

Accessing Enclosed Switchgear

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Many high-voltage systems are fully enclosed and cannot be opened while energized. Ultrasonic testing overcomes this limitation by using listening ports or small access points—without compromising safety.

Where access is permitted, panels may be removed in accordance with established safety standards, including National Fire Protection Association 70E.

Ultrasonic Early Detection.

Better Control

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Ultrasound detects faults at their earliest stage—well before they are visible or generate heat. By identifying subtle changes in frequency, it reveals the first signs of electrical discharge and mechanical deterioration.

Early detection means greater control—allowing issues to be addressed before they escalate into costly repairs or unplanned downtime.