Ultrasonic Electrical Inspection

Find arcing, tracking, corona and partial discharge while the system is running. Serving Boise, Meridian, Nampa, Caldwell, Eagle, Star and all of Idaho.

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Energized Testing

Hear the failure before you can see it

Arcing, tracking and corona discharge all produce high-frequency sound. An ultrasonic instrument converts that sound into something a technician can hear and measure, so we can find a developing fault while your facility keeps running.

Because sound travels through vents and seams, ultrasound often catches problems inside closed switchgear that a thermal camera cannot see through the cover. That is why we pair it with infrared on energized inspections.

  • Airborne and structure-borne ultrasound inspection
  • Arcing, tracking and corona detection
  • Partial discharge screening on medium-voltage equipment
  • Switchgear, MCCs, panelboards, transformers and insulators
  • Findings verified, rated and documented
Ultrasonic inspection detecting a partial discharge signature inside closed switchgear
Why It Matters

Ultrasound plus infrared plus testing

No single technique catches everything. Infrared finds heat from loose or overloaded connections. Ultrasound finds electrical discharge that has not yet produced heat. De-energized tests such as insulation resistance and DLRO measure the equipment itself. Used together on a schedule, they are the core of a TEGG preventive maintenance program.

Frequently Asked Questions

What does ultrasonic electrical inspection detect?

Arcing, electrical tracking and corona discharge, including partial discharge in medium-voltage equipment. These produce high-frequency sound before they produce visible damage or heat.

Does the equipment need to be shut down?

No. Ultrasonic inspection is performed on energized equipment under normal operating conditions, and enclosed gear can often be inspected without opening covers.

How is ultrasound different from infrared thermography?

Infrared detects heat; ultrasound detects sound from electrical discharge. A discharge problem can exist with no heat signature yet, so the two methods complement each other.

Can you inspect inside closed switchgear?

Often, yes. Ultrasound travels through vents and seams, so many problems can be detected without removing covers. Where an open inspection is needed, we plan it with your facility.

How often should facilities be scanned?

Many facilities scan at least annually, and more often for critical or heavily loaded equipment. We help you set the interval as part of your maintenance program.

Related Testing & Maintenance

● Insulation Resistance (IR) Testing ● DLRO / Micro-Ohm Testing ● Ultrasonic Inspection ● Infrared Thermography ● TEGG Program ● NFPA 70B
All Testing & Inspection
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READY TO PROTECT YOUR FACILITY?

Start with a no-cost, no-obligation survey: we'll walk your electrical system, give you a written proposal for your testing program, and include the replacement cost of your electrical distribution — so you know exactly what's at stake.

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