The DDR is a damped delivery bar designed to safely discharge the energy stored in cables and equipment tested under high voltage in a controlled manner.

It is available in 35, 80, 120, and 150 kV versions, allowing the appropriate model to be selected according to the working voltage level. Its internal resistance limits the current, providing a safer discharge process for both the operator and the equipment, while its reinforced FRP construction makes it suitable for intensive use in both laboratory and field applications.