Substations play a crucial role in the power system. Acting as the backbone of the grid, they are responsible for essential tasks including monitoring, controlling, and protecting power flow.[1] Over the years, the electrical industry has continuously worked to enhance and improve substation technologies, leading to the development of digital substations that integrate advanced communication and automation systems. These innovations …

Megohm or insulation resistance tests validate the insulating properties of electrical conductors. A conductor with good insulation will have high insulation resistance — often measured in giga-ohms (GΩ). A conductor with bad insulation will have lower insulation resistance, which can create a pathway for excessive leakage current.  No insulation is perfect, but the goal of the test is to quantify …