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Infrared thermography of electrical installations falls under classification of Predictive Fault Finding. The value is that we are now able to foresee an electrical fault before the element fails completely.
We are able to get this due to the higher heat signature of any electrical element under stress and predict that it will fail while it is still functional and appears normal to the naked eye or any other test equipment. The heat signature is identified with the use of an infrared camera. The pictures are then analyzed and put into an easy-to-follow report so that the issue can be rectified before a break down occurs, preventing loss of production due to unplanned down time.
Another result of failed or stressed electrical elements is the risk of fire; in fact the risk is more real then commonly realized. It is in this vein that insurance companies are increasingly calling for infrared electrical thermography surveys as a valuable risk assessment aid.
In a typical manufacturing plant, infrared thermography, is preformed on electrical systems such as electrical panel-boards, distribution equipment, motor control centers, motors, corresponding controllers, transformers, and other control panels.
Benefits of Thermography Survey
Major insurance companies estimate that nearly 25% of all electrical failures are attributed to faulty electrical connections. Therefore, many insurance firms are the driving force behind requiring facilities to conduct infrared surveys. Infrared technology has evolved into one of the most effective technologies for preventing failures and added benefit of not requiring an outage to carried out. Several further benefits of infrared technology listed below:
- Hot spots such as loose connections and bad contacts.
- Under-rated cables overheatinag under existing demand.
- Unbalanced loads.
- Circuit breakers, conductors, and other electrical equipment
An infrared electrical thermography survey can result in significant financial savings for the client by:
- Reducing the risk of an electrical fire.
- Reducing the risk of an unplanned electrical outage.
- Identifying properties for planned maintenance.
- Determines if the elements and system have been properly installed and are not damaged.
- Reduces downtime
- Reduces risk of equipment failure.
- Increases safety.
- Improves insureability.
- Reduces liability exposure of the designers and installers.
- Improves system performance.
- Determines elements and systems carry out properly and meet the design intent
- Determines if elements and systems are compliant with the project specification and design.
- Reduces construction schedule delays.
- Detecting loose or corroded electrical connections.
- Detecting electrical unbalance and overloads.
- Inspecting bearings and electrical motors.
- High resistance connections.
- Hot spots.
- Over loaded cables.
- Over loaded fuses or breakers.
- Imminent motor or conveyor bearing failure.
- Motor windings over heating.
- Overheating in distribution equipment.
- Phase load imbalance.
- Hot spots in high level lighting.
- Heat accumulation in overcrowded trunking.
- Thermal insulation breakdown (hot or cold)
- Thermal loss