This case study is about resolving a radio interference (RI) problem
for the FAA (Federal Aviation Administration) air traffic control
tower at the Rochester New York airport.
location & inspection
The interference was created on a 12.47kV distribution tap to the
customer.
Inspection commenced using directional radio finding equipment,
but it was not possible to locate the specific defective elements
causing the RI.
Finally, the problem was resolved with the DayCor Camera. “…It took 20 minutes for the line crews to arrive and
30 minutes to replace the defective hardware causing the radio interference,
saving time, money and a quick resolution of the radio interference
problem...” D.S.
Corona spotted:
DayCor video clip of the 12.47kV distribution tap which shows the
cause of the radio interference:
The defects:
Flat spots on the aluminum tie wrap were found
on on the 12.47 kV pin insulator .
The rubber-covering on the 12.47kV wire: the erosion of the
rubber was caused by arcing on the 12.47kV wire, that was attached
to the pin insulator. The covering on the wire was removed per
our standards
Maintenance
“…We changed out insulators,
lightning arrestors and cleaned the potheads on 2 circuits which
are 115kV transmission lines. These also caused radio interference
for the airport control tower…” Dave
Shields.
“… I know that
I could not have solved the problem without using the DayCor
Camera…” Dave Shields.
