HDE Firefly, Operating Instructions Manual, Page: 4 / 12

4
DESCRIPTION
The FireFly Detector combines a lighted fuse tool with voltage detection adding
an extra margin of safety for those working on distribution lines. Operating
frequency is 60Hz (optional 50Hz available).
The FireFly Detector includes is a single range voltage detector. One range of
operating voltages is set within the unit. A typical range is 4kV-12kV. If the unit
contacts a conductor energized from 4kV (line-to-line) to 12kV (line-to-line),
red LEDs flash and an audible alarm is activated.
Other FireFly Detector voltage ranges are available up to and including 35kV.
Do not use the detector at voltages higher or lower than it is rated. Consult
the product label for the specific range or levels for the unit supplied.
When operating within the unit’s voltage range (see product label), the FireFly
Detector will provide both an audible and visual alarm upon making contact
with an energized conductor. The FireFly Detector units will not give an alarm
due to induced voltage on de-energized conductors, unless the induced voltage
level exceeds the threshold voltage of the detector.
The FireFly Detector should be tested both prior to and after line testing to make
certain the unit is working properly. The FireFly Voltage Detector has a built-in
self-test feature to make certain the unit is working properly. Push the TEST button,
which will test the battery, the electronic circuitry and the audible and visual alarm
(see page 5 for more information). To test the FireFly Detector on a known voltage
source before and after each use, the PT-FTVD Proof Tester FireFly Voltage Detector
Tester can be used (see page 10 for more information).
If the FireFly Detector does not pass the self-test, the voltage detector batteries
should be replaced and the unit re-tested. If the unit still does not pass the test,
the unit should be sent in for repair. NEVER USE THE FIREFLY DETECTOR IF THE
SELF-TEST IS NOT SUCCESSFULLY PASSED! See Self-Test Operation Section (page 5).
Four (4) 3V lithium batteries power the FireFly Voltage Detector and white lights.
Even though the voltage detector is always “ON” and sensing voltage, the voltage
sensor batteries should last for approximately one year under normal use. We do
recommend however, replacing the batteries every six months. If the instrument
is to be stored for a year or more, remove the battery during storage.
A universal spline adapter is built into the aluminum housing of the FireFly Detector
units. Extension hotsticks are required for use at all times. Hotsticks are available from
HD Electric Company and must be used when placing the FireFly Detector in contact
with any conductor.