Introduction
Electrical panels are critical components in any industrial facility, and undetected overheating within Low Tension (LT) panels can lead to serious failures, production downtime, and safety risks. Three Phase Techno Solutions conducted a thermal scanning inspection for an industrial facility, where early detection of abnormal temperature rise helped prevent a potential LT panel breakdown.
Problem Statement
The facility had no structured thermal inspection process for its electrical panels. While operations were running normally, there was a risk of hidden faults within the LT panels.
Key concerns included:
- No visibility into internal panel temperature conditions
- Possibility of loose connections and hotspot formation
- Risk of insulation failure and equipment damage
- Potential unplanned shutdown due to panel failure
These issues posed a significant threat to operational continuity and safety.
Solution Implemented
A detailed thermography inspection was carried out using calibrated thermal imaging equipment:
- Thermal scanning of LT panels under operating conditions
- Identification of hotspots in busbars, breakers, and cable terminations
- Temperature comparison across phases and components
- Detection of abnormal heat rise beyond permissible limits
- Documentation with thermal images and analysis reports
Approach & Methodology
On-Load Thermal Inspection
Hotspot Identification
Severity Classification
Root Cause Analysis
Corrective Action Recommendation
All LT panels were scanned while under normal load to capture real operating conditions.
Thermal images were analyzed to detect:
- Loose or improper connections
- Uneven load distribution
- Contact resistance issues
- Overloaded components
Identified hotspots were categorized based on temperature rise and risk level.
Engineering evaluation helped determine:
- Loose cable terminations
- Oxidation at contact points
- Improper tightening torque
- Load imbalance across phases
- Retightening of connections
- Load redistribution
- Preventive maintenance scheduling
- Continuous monitoring recommendations
Results Achieved
Timely thermal scanning and corrective actions resulted in:
- Prevention of potential LT panel failure
- Elimination of critical hotspots
- Reduced risk of fire and equipment damage
- Improved reliability of electrical distribution system
- Avoidance of unplanned downtime
Key Benefits
- Early detection of hidden electrical faults
- Improved safety and compliance
- Increased equipment life
- Reduced maintenance cost
- Enhanced operational continuity
Conclusion
Thermal scanning is a critical preventive maintenance tool for industrial electrical systems. In this case, Three Phase Techno Solutions identified and addressed critical overheating issues before they escalated into a major failure.
Regular thermography inspections ensure safe, reliable, and efficient operation of LT panels and overall electrical infrastructure.