Composite string insulator units for overhead lines with a nominal voltage greater than 1 000 V - Dimensional and electrical characteristics Ingestion-build-47786 If bosses/pipes are used

If bosses/pipes are used

Strategy and policy

and by regulators

notably ISO 9283

This National Annex gives: the UK decisions for the Nationally Determined Parameters described in the following subclauses of BS EN 1995-2:2004: - 2

Composite string insulator units for overhead lines with a nominal voltage greater than 1 000 V - Dimensional and electrical characteristics Ingestion-build-47786 If bosses/pipes are used1 Scope This part of IEC 61466 is applicable to composite string insulator units with a specified mechanical load (SML) of 40 kN to 600 kN for AC overhead lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to insulators of similar design used in substations or for railway applications. This standard applies to string insulator units of composite type with fittingsin accordance with IEC 614661.