Separable connector switching performance

Laboratory loadbreak testing of 25 kV class separable insulated connectors suggests that switching reliability achieved in the field will vary between 93.5% and 99.9% depending on the type of tool used, the condition of the connector system, the circuit voltage and loading, and ground plane proximity. A survey of user reliability requirements concluded that a reliability of at least 99.7% is needed to retain separable connector switching as a viable means of providing URD flexibility. It is concluded that in order to maintain the required reliability for live switching, the best operating tools and the best separable connector system components must be used