Hioki 4056-21

Insulation Resistance Testing
The insulating material of wires and cables degrades with time, leading to decrement
in its electrical resistivity [2] . This result in electrical leakages which poses a hazard to
personnel safety and could damage equipment. Hence insulation resistance testing
is needed to identify any insulation deterioration before any untoward incidents
occur. Figure 2.0 identifies some of the common factors that lead to insulation
degradation.