Generator Technicians Count On Latest Technology
Troubleshooting An Industrial Generator With A Thermograph!
The most basic definition of a thermograph is an instrument that produces a continuous record of fluctuating temperature. Some common thermographs are:
- Hygro Thermograph - Temperature and humidity readings recorded on graph paper located on a drum. Graph paper must be changed often depending on time settings. Used in spaces that are temperature and humidity critical.
- Infrared Thermometer - More advanced models use laser pointer technology and can measure various temperature ranges. Recording capabilities are not uncommon. Some units can be connected to computers to download information. This unit is limited to a single point temperature reading. Many points must be measured to form an accurate temperature picture.
- Thermal Infrared Camera - The hand-held instrument offers a color display screen. Scanning large areas with simple point-and-shoot technology is a common feature. More advanced models offer software that allows interface with computers and other smart devices.
Thermography is the temperature measurement of operating surfaces of equipment. Temperature changes offer an indication of problems that can occur in diesel engines. In facilities that must have an un-interruptible power supply (hospitals, data centers, power plants, etc.) thermographic inspections are part of a maintenance plan. They identify exhaust leaks, generator end bearing temperatures, cylinder exhaust temperatures, and thermal mixing of cooling systems.
Thermographs and Controls
Controls in a power distribution Controls in a power distribution system can be comprised of various components and connections.
Thermography inspections should be conducted on following electrical components:
- Automatic Transfer Switches (ATS)
- Manual transfer switch
- Electrical switch gear
- Power distribution units
- Distribution systems.
Benefits of adding thermography to your maintenance plan are numerous. They can identify and correct hidden problems before they become an outage issue. Loose connections and failing components can generate a higher than normal heat signature.
Identifying issues at an early stage reduces repair costs. Fixing problems early will also ensure your emergency power and controls system perform as needed when required.
Facilities can also outsource analysis and receive recommendations for repair. Those with an established maintenance team may choose to purchase equipment to perform measurements, adding the process into their existing maintenance schedule.
Story Summary
What is thermal imaging?
Thermal imaging, also called thermography, uses special cameras to detect heat patterns and temperature changes in objects. For generators, it can identify hot spots and potential issues before they cause breakdowns.
What are the benefits of using thermal imaging on generators?
- Allows inspection without powering down the generator
- Pinpoints problem areas with high accuracy
- Detects issues early before they cause failures
- Helps prevent unplanned downtime and costly repairs
- Improves reliability and efficiency of generators
What generator components can be inspected with thermal imaging?
- Electrical connections and switchgear
- Engine components like cylinders and exhaust
- Generator end bearings
- Cooling systems
- Transfer switches
- Distribution systems
How often should thermal imaging be performed?
Most experts recommend annual thermal imaging inspections as part of routine generator maintenance. More frequent inspections may be needed for critical power systems.
What qualifications are needed to perform thermal imaging?
Thermal imaging should be done by qualified technicians trained in thermography and electrical systems. Proper safety precautions and PPE are required when working with live electrical equipment.
What do abnormal thermal images indicate?
Hot spots in thermal images can reveal issues like:
- Loose or corroded electrical connections
- Overloaded circuits
- Failing components
- Cooling system problems
- Bearing wear
- Exhaust leaks
How is thermal imaging data analyzed?
Thermal images are typically uploaded to software for detailed analysis. Technicians can identify temperature anomalies and provide recommendations for repairs or further
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