Protection and Visibility
SpanGuard power line markers have been saving lives and protecting valuable power lines by making them visible to low-flying aircraft.
Ready for Install
These power line markers were installed on the Sunrise Powerlink near San Diego, California.
Reflective tape is an option available with power line markers, making them more visible at night for helicopters and small planes.
Evolution of Markers
P&R Tech has improved marker design and extended it to a variety of models that fit nearly any application and budget—from the low cost Redball markers to aluminum markers that attach to today’s high-temperature lines.
Developed for installation on higher voltage lines (up to 500-kV), these EHV markers have a special coating and other design features to reduce corona effects that can lead to burning or melting with standard markers.
Each power line marker should be a solid color—international orange, white, or yellow—and the FAA suggests that alternating colors be used on critical lines to optimize visibility in all seasons.
Haverfield Helicopter Installation
The FAA advises that 36″ power line markers be used on high transmission lines and hazardous river crossings.
Utilities are embracing the new LED technology that offers them greater reliability, low initial material and installation costs, low maintenance costs, reduced power consumption, and broader flexibility to light remote areas.
Steady Red or Flashing
LED light technology has enabled manufacturers to develop steady red or flashing lights that illuminate 24/7 when they are installed directly on the energized power line conductors. P & R Technologies introduced an FAA catenary light that draws its power directly from the live conductor to light 2-810 steady red LED lights 24/7. This light has also been used to light obstructions 150 feet or less where solar or direct power is not possible. The dual light can be mounted near the top insulator. The SpanLite offers other options such as flashing the lights, or different colors such as amber, blue, green or white.
New companies like EnGen Technologies have developed the world’s first self -illuminated street or area light that illuminates when installed directly to distribution power lines.
LED beacon/lights offer 10-15 years of maintenance- free operation, greatly reduce power consumption, and improve light output and reliability.
LED technology offers the industry greater flexibility to light locations due to their greatly reduced power consumption. New light systems can be powered by small solar systems that have significantly lower initial costs than trenching 120 VAC out to a remote pole.