ELECTRICAL CONNECTION MODULE, MAIN DISTRIBUTION FRAME AND CHANGEOVER METHOD THEREOF

摘要

A main distribution frame comprises an external line module, an internal line module, a cutover module connected with the internal line module and a cutover plug which is plugged into the internal line module and the cutover module, the cutover plug separates jumper-side terminations of the internal line module from equipment-side terminations of the internal line module, and the jumper-side terminations of the internal line module are electrically connected to equipment-side terminations of the cutover module through the cutover plug.