Abstract
Insulators play an important role in power systems and are used to prevent the flow of electrical current. Live insulator diagnostics can detect problems in the insulation, such as increased levels of leakage or damage, which can potentially lead to insulator failure or accidents. The authors in the article present a constructive resistive sensor, which is a high-resistance resistance for diagnosing insulators under voltage. A formula is derived for calculating the required resistance for given geometrical parameters of the structure. By using a high-resistance resistance, leakage currents can be measured more accurately and the condition of the insulation can be determined. This work may be useful for engineers and specialists involved in the development of sensors for diagnosing insulators and other measuring instruments in various fields of energy. Reducing the dimensions, increasing the reliability of the technological design of the sensor to detect damage to the support, pin insulators and prevent possible short circuits in the power system, and, consequently, to its timely replacement
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