A bus-bar conductor system for electrical high voltage systems, wherein electrically conducting bus-bars are mounted in an enclosing compartment. A common support body for supporting one or more supporting insulators, to which the bus-bars are attached, extends freely or essentially freely in the compartment in the longitudinal direction of the bus-bars. The support body is preferably supported by support elements arranged at the outer ends of the compartment. The support body can itself be designed as a conducting bus-bar.