Description of Instruction Manual Change
What is a Filtered Battery Indicator Module? (Panduit PN: VS-AVT-3IB-F)
A “filtered” Battery Indicator Module is the same Battery Indicator Module, yet it has an
additional component in line with each of the 3 red presence of voltage LED circuits. This is to
control high frequency electrical noise as, in some installations, this noise can be coupled from
powered feeders to an adjacent unpowered circuit in the same conduit. In these cases, the
energized conductors can generate a small high frequency induced voltage which may cause
the red LEDs for the AVT monitoring the unpowered adjacent circuit to be lit dimly, flicker, or in
some rare cases, illuminate when hazardous voltage is not actually present.
