Effect of leakage capacitance and frequency disturbances on the measurement accuracy of R

The leakage capacitance (C) creates a leakage path for the measurement signal and reduces the level of the useful signal that flows through the insulation resistance (R).

IMD injects an adaptive multi-frequency measurement signal with low frequencies and includes high-performance integration algorithms. It makes the device compatible with large power systems that have a high value of leakage capacitance and this operates out of the frequency disturbance range. Because the device is compatible with IMD, the device operates correctly even with impact of leakage capacitance and frequency disturbances.

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