Present Trends In Separable Insulated Connectors: Evolving Utility Requirements

A shortened version of the loadbreak bushing insert has recently been offered for use with separable insulated connectors. This device has been examined in conjunction with evolving utility requirements, particularly for higher distribution voltages. Indications are that both the present industry Standard and the present designs of the short bushing insert may not meet the full requirements of electrical utilities. Areas of concern were found to relate to insulation strength and current transfer capability. It is suggested that unsatisfactory performance in these areas may have adverse effects on bushing reliability.