Thermography
(Infrared Electrical Scanning)
Thermography
Thermography is a proactive maintenance method that identifies heat-related issues in electrical systems before they lead to equipment failure or outages. By scanning energized components, infrared imaging reveals temperature abnormalities that indicate developing problems such as component failure, loose connections, load imbalance, or corrosion.
This allows utilities and industrial facilities to take corrective action early, preventing costly downtime and improving system reliability.
Services Include
-
Complete plant inspections (overhead and underground)
-
Identification of heat-related failure points and flashover risks
-
Certified infrared inspection personnel
-
Detailed reports with thermal images and corrective recommendations
Detection Method
-
Before beginning any inspection of electrical equipment, ensure compliance with all safety procedures and rules.
-
Be familiar with CSA Z462 (NFPA 70E – USA).
-
Scan the inspection area starting at a high sensitivity level, similar to generic leak detection.
-
To pinpoint the emission source:
-
• Reduce the sensitivity.
-
• Follow the sound to its loudest point.
-
If covers, plates, or doors cannot be removed:
-
• Scan around seams and vent slots.
-
Identify and detect any potentially damaging electrical discharges.
-
If it is not possible to get close to equipment (e.g., for safety reasons or when inspecting overhead power lines):
-
• Use a parabolic microphone and dish.
Applications of Infrared Scanning
Our process uses solid CO₂ pellets or shavings blasted through an insulated wand under high pressure:
Common applications include scanning:
-
Electrical components and distribution networks
-
Transformers, switchgear, breakers, and bus connections
-
Building envelopes and mechanical systems
Heat indicates resistance, which may be caused by:
-
Loose or deteriorating connections
-
Failing or overloaded components
-
Corrosion or contamination
-
Load imbalance or harmonics
Benefits of Thermography
-
Detects problems before startup or failure
-
Reduces downtime and emergency repair costs
-
Pinpoints exact components requiring maintenance
-
Shortens scheduled maintenance windows
-
Extends equipment life and performance reliability
-
Verifies effectiveness of completed repairs
-
Supports safer and compliant operations
Maintain Reliability Through Early Detection
Use the Request Service button to schedule a Thermography Inspection and protect your electrical infrastructure with proactive maintenance.