2026-05-25
As summer temperatures rise beyond 35°C, power grids worldwide enter their most demanding operating season. For utility maintenance teams, extreme heat does not simply mean higher electrical loads — it accelerates the progression of minor insulation defects into catastrophic unplanned outages.
Under thermal stress, issues that were once barely detectable can rapidly evolve into serious equipment failures, threatening grid reliability, operational continuity, and public safety.
Many utilities still rely on single-dimension inspection tools as part of their predictive maintenance programs. Unfortunately, this approach leaves critical failure modes undetected — exposing operators to at least 50% unseen risk.
Infrared cameras are highly effective at identifying overheating caused by poor connections, overload conditions, or cooling failures. However, they are essentially blind to early-stage partial discharge (PD) activity that has not yet generated a measurable temperature increase.
By the time thermal anomalies become visible, insulation degradation may already be severe.
Some acoustic imaging systems — including certain well-known brands — can successfully capture ultrasonic emissions from discharge activity. However, without integrated thermal sensing, they fail to identify mechanical overheating, uneven load distribution, or cooling system inefficiencies.
When inspections cannot simultaneously analyze both sound and heat, critical diagnostic gaps emerge — and those gaps often become the root cause of major failures.
To eliminate these industry blind spots, HERTZINNO introduced the third-generation acoustic-thermal imaging system: the HA3T.
This is not simply a combination of two sensors — it is a fully integrated multi-dimensional diagnostic platform designed for modern power asset inspection.
More microphones mean higher acoustic resolution and more precise sound localization.
Equipped with 144 low-noise MEMS microphones, the HA3T can accurately detect and pinpoint faint corona discharge signals from distances up to 200 meters — even in noisy industrial environments.
While many competing acoustic cameras still require external thermal devices, the HA3T delivers synchronized acoustic and thermal visualization on a single screen, in real time.
Operators can instantly correlate ultrasonic emissions with thermal gradients, dramatically improving inspection efficiency and diagnostic confidence.
Unlike systems limited to mid- or low-frequency detection, the HA3T covers an exceptionally broad spectrum — from low-frequency mechanical friction to high-frequency gas leaks and partial discharge activity.
The result is truly comprehensive fault detection without diagnostic blind spots.
Detection alone is not enough. The real value lies in understanding the nature and severity of the fault.
That is where the HA3T’s built-in PRPD (Phase-Resolved Partial Discharge) analysis becomes a key differentiator.
Many entry-level devices can only indicate that “a sound exists.” The HA3T goes significantly further. Through AI-driven PRPD analysis, it can identify whether the discharge is:
This level of diagnostic intelligence enables maintenance teams to evaluate fault severity and prioritize corrective actions — all without shutting down equipment.
During the critical summer peak-load season, utilities need more than tools that merely see faults — they need systems that understand them.
With its lightweight 1.1 kg design, integrated ATEX explosion-proof certification, laser distance measurement, and AI-assisted diagnostics, the HERTZINNO HA3T represents a new generation of intelligent predictive maintenance technology.
Because protecting grid reliability means protecting every hertz of power.
