NEMA HV 3-2019

NEMA HV 3-2019 describes best practices on the part of purchasers and suppliers of high voltage insulators toward assuring a consistent and reliable supply of best quality high voltage insulators. It is the intent of these guidelines to provide assistance to those responsible for specifying and purchasing high voltage insulators to identify those best quality insulators most suitable for their specific application and service conditions which can be consistently and reliably supplied.