Insulator strings and sets used in substations and overhead lines.
It defines the test circuit, the measuring equipment required, and the methods for interpreting the results to ensure that interference levels remain within acceptable limits. Core Technical Requirements in the PDF iec 60437 pdf
Organizations like ANSI (USA), DIN (Germany), or BSI (UK) often sell the IEC standard adopted for their specific country. Insulator strings and sets used in substations and