Composite string insulator units for overhead lines with a nominal voltage greater than 1000 V - Standard strength classes and end fittings Ingestion-build-251241 Summary of initiatives

Summary of initiatives

This International Standard gives a procedure for determining the curl of paper and board using a vertically suspended test piece

— determination of open time (4

These results may be used to represent the performance of production models provided that the tested model is representative of the production model

BS EN 60623:2017 supersedes BS EN 60623:2001

Composite string insulator units for overhead lines with a nominal voltage greater than 1000 V - Standard strength classes and end fittings Ingestion-build-251241 Summary of initiatives1 Scope This part of IEC 61466 is applicable to composite string insulator units for a. c. 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 on electric traction lines. This standard applies to string insulator units of composite type with ball, socket, tongue, clevis, Y clevis or eye couplings, or a combination thereof. The object