Thermal Imaging Predictive Maintenance Software | Oxmaint

By Riley Quinn on August 18, 2026

thermal-imaging-predictive-maintenance

A thermographic survey tells you the truth about one day. Oxmaint pairs fixed thermal cameras with AI so switchboards, motors and bearings are watched continuously, comparing every reading against ambient and against the phase beside it, and raising a prioritised work order the moment a hotspot appears rather than the next time a thermographer visits. Start a free trial or book a thermal AI demo to see your own switchboards monitored.

Predictive & AI

Thermal Imaging Predictive Maintenance

Busbars and main connection points are the components that typically fail, and they keep failing on sites that run routine thermographic inspections. The reason is simple, and it has nothing to do with the quality of the survey.

Survey day is the one day your fault might not be hot

A survey needs the system at roughly 40% of maximum load to reveal heat-related faults. A connection that only overheats during a February peak, a night shift or a summer ambient will pass a March survey without a flicker.

Annual survey1 day
One snapshot, taken under whatever load happened to be running that morning.
Continuous monitoring365 days
Every load condition, every ambient, every shift. The fault is caught when it appears.

Continuous monitoring does not replace certified thermography. It removes the 364 day gap between visits. Book a demo to see both working together.

Delta T severity, the way NETA reads it

A component at 60 degrees is not automatically a fault. If the phase beside it sits at 40 degrees under identical load, that 20 degree difference is the finding. Delta T is a comparison, not a threshold.

Level 1 Small rise above reference Possible deficiency. Worth investigating and worth trending, but not a job on its own.
Level 2 Moderate rise above reference Probable deficiency. Repair as scheduling permits, before the next load peak.
Level 3 Significant rise above reference Monitor closely until corrective work can be carried out. Do not let it sit in a report queue.
Level 4 Major discrepancy Failure considered imminent. Immediate action, and an arc flash exposure question for anyone working nearby.

Exact bands come from ANSI/NETA MTS and depend on whether the reference is ambient air or a comparable component. Configure yours once and let the platform classify every reading. Book a demo to see your bands applied live.

Two measurements, two purposes

Getting these the wrong way round is the most common mistake in an in-house thermography programme.

Delta T, comparative For electrical connections, busbars and terminations. The rise above ambient or above an identical component under the same load is what reveals a loose or degrading joint. Absolute temperature alone will not tell you a connection is failing.
Absolute, design limit For bearings and motor windings, where the manufacturer sets a maximum rated temperature. Here the actual value matters, and equipment may need de-rating in harsh or high ambient environments.

Oxmaint applies both, per asset, so a bearing is judged against its rating and a busbar against its neighbour. Book a demo to see the configuration.

What continuous monitoring actually looks like

Fixed cameras on the assets that matter, feeding one view. Not a folder of images somebody has to interpret.

Monitoring point Reading vs reference Status
MCC 3, incomer busbar 42 C +4 C Normal
Panel B, phase L2 termination 68 C +21 C Work order raised
Extraction fan motor, DE bearing 79 C Near rating Investigate
Transformer 2, LV connections 51 C +6 C Normal

Illustrative view. Every alert carries the image, the reading, the reference and the asset history behind it. Book a demo to see this on your own switchboards.

Three reasons finance signs this off

Personnel safety Overheating connections are arc flash precursors. Catching them without opening a live panel removes exposure as well as risk.
Insurance and compliance Carriers frequently mandate thermal imaging as a condition of cover, with certified reports and documented corrective actions. Gaps can raise premiums or void it.
Avoided catastrophic failure One switchgear failure brings emergency replacement, extended shutdown and liability. It can exceed years of monitoring cost in a single event.

Since 2023 the relevant electrical maintenance standard moved from recommended practice to an enforceable requirement for annual infrared inspection, and predictive programmes are associated with maintenance cost reductions of around 25 to 30%. Book a demo to see the compliance record it produces.

Where to fit cameras first

Not everything needs a fixed camera. Continuous monitoring belongs on primary distribution and high-consequence assets, with periodic survey covering the rest.

1Main incomers and primary distribution busbars
2Motor control centres feeding production-critical drives
3Transformer LV connections and tap changer compartments
4Switchgear over roughly 20 years old, or with a fault history
5Panels that cannot be safely accessed under load
6Bearings on drives where a seizure stops the line

Everything else stays on a scheduled thermographic survey, tracked in the same platform. Book a demo to prioritise your own list.

Questions we get asked

Do we still need a certified thermographer? Yes. Continuous monitoring covers the gap between visits; certified survey and reporting still satisfy the standard.
Does Oxmaint supply the cameras? Oxmaint is the intelligence and workflow layer. It takes feeds from fixed cameras and handheld survey results alike.
Do panels need to be opened? Fixed internal cameras remove that need entirely, which is the main safety gain over periodic surveys.
What load do readings need? Surveys typically need around 40% of maximum load. Continuous monitoring simply waits for the load to arrive.
What happens when a threshold is crossed? A prioritised work order is raised against the asset with the thermal image and reading attached, then tracked to closure.
Will it work with our existing CMMS? Yes. Oxmaint connects to existing systems rather than requiring you to replace what already works.

Something not answered here? Book a demo and ask directly.

Bring your last thermographic report

In thirty minutes we will show you which of its findings would have been caught weeks earlier under continuous monitoring, and what the alert configuration would look like on your switchboards. No obligation, and the free trial runs without a credit card.


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