Structurally, the pointer consists of three parts: working, insulating and handle, made of electrically insulating fiberglass.
The insulating part is located between the working part and the handle.
A colored marker ring is applied to the boundary between the working and insulating parts.
There is a limiting ring of insulating material at the interface between the insulating part and the handle.
The principle of operation of the indicator is based on the flow of capacitive current through the electrical circuit of the indicator (if there is voltage in the electrical installation being tested).
TECHNICAL DATA
The type of indicator is contact, operating without grounding the working part.
The rated voltage tested in electrical installations is from 6 to 20 kV inclusive;
Type of indication – combined (visual – main, acoustic – additional);
The voltage indicator is designed for operation in the following conditions: a) continuously permissible operating temperatures: from minus 45 0С to plus 40 0С;
b) relative air humidity – up to 98% at a temperature of 25 0C;
Overall dimensions:
– length of the insulating part, mm – 496;
– handle length, mm – 150;
– total length (including the working part), mm, no more than – 890.
Indication voltage, kV, slightly more – 1.5;
Weight, kg, a little more – 0.55.
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