APT-1 Active Power Tester Hight Voltage Line Detection Active Power Tester The APT-1 Active Power Tester is designed to give an indication when the absence of full line voltage is detected on overhead conductors, giving an audible and visual alert. The APT-1 is for use on uninsulated overhead conductors with voltages from 7.6 to 13.2kV line-to-ground. I tried to show the lights working and the very loud beeping sound.
Description Mystery Volt and Milliamperes tester. I can't tell if this a homemade unit, an assembled kit or store bought unit. It is solidly constructed and labeled well, from the labeled fuse panel cover to the indicator lights.
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