The basis of Thermographic Infrared Inspection is formed by the comparison of temperatures, measured and observed, across surrounding and similar components. These measures are able to catch any variations in temperature, which often reveal defective or failing components. Concealed equipment problems exist in almost every significant building. Unfortunately, very few are discovered and corrected through conventional maintenance activity. Most problems go undetected until there is an operating failure. Usually the failure does extensive damage and causes some interruption of operation schedules. Thermographic Inspections can catch potential problems before they are ever realized. If done periodically, these predictive thermal inspections can save maintenance cost and prevent unexpected downtime.
THERMOGRAPHIC ELECTRICAL INSPECTION
Infrared electrical inspections find hot spots caused by defects in connections and components. Infrared thermography is used to find areas of excess heat (caused by increased resistance) so that problems can be corrected before a component fails, causing damage to the component, creating safety hazards and productivity loss. Because increased heating is a sign of failure, infrared is the best diagnostic tool available for finding these hot connections in the early stages of degeneration. This is why your insurance company may have asked for an electrical infrared inspection, to find and prevent problems before they cause damage to your personnel, equipment and facility.
WHEN IS THE THERMOGRAPHIC SCAN NEEDED?
- Power systems having electrical services greater than 120 volts.
- Step-up or step-down power transformers onsite.
- Power transfer circuits, such as switch gears and relays.
- Modifications to electrical panels, power control boxes, and sub-panels.
- Buildings with aluminum wiring.
- Motor starter circuits.
- High torque and heavy current draw motors.
- Presence of high output lighting equipment, such as mercury vapor lamps.
- Use of uninterruptible power supplies
WHAT IS AN ELECTRICAL HOT SPOT?
Infrared testing refers to an inspection process utilizing thermography or infrared cameras as a means to perform situational non-destructive testing or NDT. Infrared testing can be performed in a variety of situations to detect problems before they become much larger issues.
CONDITIONS DETECTABLE BY AN INFRARED INSPECTION
- Loose/deteriorated connections
- Open circuits
- Unbalanced loads
- Inductive heating
- Defective equipment
BENEFITS OF INFRARED INSPECTION
- Reduce unscheduled down time
- Increase equipment life
- No service interruption during inspection
- Lower risks
- Lower repair costs
- Increase profits
- Prevent catastrophic failures
- Lower insurance premiums due to reduced losses
Carelabs carries out surveys on switchgears, control panels, transformers, motors and controls and all accessible items of distribution equipment using infrared imaging to detect and locate faults which could lead to system failure and / or the initiation of any hazards and / or fire.
Through thermal imaging carelabs Engineers identify electrical or mechanical equipment with hotspots due to the following:
- Loose breaker terminals
- Overload circuit breakers
- Overheated cables due to excessive load
- Poor cable insulation
- Arcing faults
- Motor’s low level oil
- Overheated motors
Our teams are qualified and license to carry out Thermographic Survey.