Patent Number: 6,168,447

Title: Loadbreak connector assembly which prevents switching flashover

Abstract: Loadbreak connectors which are modified to reduce the probability of flashover upon disassembly operation of a loadbreak bushing insert from a power cable elbow connector. The loadbreak bushing insert and power cable elbow connector are mated with an interference fit between an elbow cuff and a transition shoulder portion of the loadbreak bushing insert. The bushing insert is provided with vents to vent a cavity formed between the elbow cuff and the transition shoulder portion of the bushing insert with ambient air to avoid a decrease in pressure within the connection region and avoid a decrease in the dielectric strength of the air therein thus preventing flashover. Preferably, the vents are provided on an elbow seating indicator band formed of a bright contrasting color on the bushing insert which, in addition to venting the cavity, serves to indicate whether the loadbreak connector is improperly assembled.

Inventors: Stepniak; Frank M. (Andover, NJ), Siebens; Larry N. (Port Murray, NJ)

Assignee: Thomas & Betts International, Inc.

International Classification: H01R 13/53 (20060101); A01R 013/53 ()

Expiration Date: 01/02/2018