Runway lighting systems are designed to operate reliably at all times to ensure airfield safety and efficiency, even during adverse environmental conditions such as snowstorms, heavy rain, and temperature fluctuations.
However, another potential threat to your runway operations is lightning. That’s because airport runway lighting operates in one of the most electrically hostile environments imaginable, with long conductive circuits spread across open terrain that are fully exposed to lightning strikes, ground potential rise, and transient overvoltage events.
Airfield lightning arrestors help mitigate the risks associated with lightning strikes on runway lighting systems, helping to preserve system integrity so your airport runway systems can continue without interruption.
The Risk Of Lightning Strikes To Your Airport Runway System
What makes airfields uniquely vulnerable to lightning strikes is scale. Modern runway lighting systems rely on extensive series circuits, isolation transformers, constant current regulators (CCRs), and control infrastructure that can extend for miles across exposed pavement and soil. Essentially, this turns the electrical system into a large antenna that can sustain damage from lightning, even if it’s not a direct strike.
Without properly specified airfield lightning arrestors, extensive damage can result from transient lightning that is amplified across long cable runs and multiple interconnected subsystems. Critical components such as lighting fixtures, transformers, CCRs, and control electronics were never intended to dissipate lighting, putting them at risk and increasing the chances of service interruption.
The Role Of An Airfield Lightning Arrestor In Your Runway Lighting Infrastructure
A common misconception is that lightning arrestors are designed only to “stop lightning.” In reality, their function is much more precise and valuable to your overall operations.
When properly integrated with grounding and bonding systems, an airfield lightning arrestor provides a controlled, low-impedance path to ground for transient overvoltage events. It diverts destructive energy away from sensitive equipment before insulation breakdown or component failure occurs, significantly reducing unplanned outages and helping ensure that lighting systems remain available when needed most.
How Do Airfield Lightning Arrestors Protect Your Components?
In a typical runway lighting setup, airfield lightning arrestors are usually installed at critical transition points, including the outputs of CCRs, series-circuit interfaces, lighting vaults, and field distribution points. Their job is to clamp voltage spikes to a safe level within microseconds, protecting both upstream power equipment and downstream field assets.
This is critical because modern CCRs, control panels, monitoring systems, and LED drivers use sophisticated, solid-state electronics that are inherently more sensitive to transient voltage events than legacy electromechanical systems.
It’s also important to note that a single unmitigated surge can degrade components without causing immediate failure. Insulation damage, weakened semiconductors, and latent faults often manifest weeks or months later, leading to a slow erosion of system reliability from intermittent issues that are difficult to diagnose properly long after the initial event.
Properly applied lightning arrestors dramatically reduce this risk by limiting both the magnitude and frequency of electrical stress events, saving your maintenance team significant time dealing with avoidable system problems caused by transient lighting strikes, whether the damage is apparent immediately or at a later time.
Advanced Technology That Can Build Long-Term, Sustainable Profits
The true payback of installing airfield lightning arrestors in your runway infrastructure can’t be captured in an ROI calculation, as their value lies in avoiding failures rather than providing measurable output.
Instead, sustainable profitability needs to be assessed through mitigating long-term financial and operational risk. The upfront cost of installing arrestors during initial construction or major system upgrades is marginal compared to the expense of emergency repairs, equipment replacement, and operational disruptions caused by surge damage.
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Partner With Airport Lighting Company For Airport Runway Lighting Technology That Enhances The Safety And Efficiency Of Your Operation
As an airport operator, you know that electrical surges from lightning strikes will occur. The key to keeping your runway operational is to equip your system with advanced technology that responds to these surges in a controlled, predictable way.
That’s where the experts at Airport Lighting Company can help. Our airfield lightning arrestors are specifically designed for airport applications, with the voltage ratings, discharge capacities, and environmental durability appropriate for runway installations, even for large and complex systems that manage high-volume, 24-hour air traffic.
When you’re ready to take the next step to protect your airport runway lighting system from adverse environmental conditions, call our team first.
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