“It is far safer and less costly to prevent an electrical problem than it is to repair one.”
TEGG Corp
Following are a few components that you should consider when implementing your electrical preventive maintenance program:
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Controlled Dehumidification
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• Visual/Mechanical Inspection: Visually inspecting your electrical components for cleanliness, proper alignment, moisture, dust, corrosion, and foreign objects can prevent unplanned issues. In addition, you can verify that electrical components are installed accurately, properly rated, and reduce or eliminate potential code violations.
• Infrared Termography Inspection: While under load, scanning your electrical components with an infrared camera can reveal heat differentials that could ultimately lead to failure and even a fire. In addition, these “hot spots” are areas of energy waste and will spike your utility bill.
• Ultrasonic Testing: Just as infrared thermography converts colors that we can’t normally see to colors that we can see, ultrasonic testing converts sounds that we can’t normally hear to sounds that we can hear. Ultrasonic testing can detect minor arcing and tracking, mechanical looseness, destructive corona, “chattering” between contacts and insulation deterioration.
• Voltage & Current Testing: Taking diagnostic measurements will help you dig down to the root cause of the perceived issue. With the proper testing equipment, you’re able to check for voltage and current imbalances, voltage drop, harmonic distortions and power quality issues, to name a few. Tese measurements will provide the root cause of a perceived issue and be your base for trending and tracking purposes.
Infrared inspection reveals a
significant heat signature on the A phase of this individual disconnect.
18
ISI EDGE SPRING 2017
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