In the fully insulated equipments such as cable branch box,box-type substation and switch box. Because all live parts
are fully insulated and sealed, the operator can't determine the power line is electrified or not. HLI Series Panel-type.Hot Line Indicator can be installed on relevant power equipment and indicate operating/maintenance personnel that
the equipment is electrified or not by observing twinkling of indication light.
Panel of the indicator can be installed on box/housing of associate power equipment. The other four wires are
connected with earth parts and tube test holes of the power equipment. When the power equipment is energized.
test hole of the tube can sense corresponding electric field energy, and the indication light start flashing if electric field energy accumulated to a certain voltage to remind the relevant operating / maintenance personnel.
This hot line indicator has checking phase function
.