Spacer dampers were originally developed to suppress bundle
conductor subspan oscillations that could cause damage to
multi-conductor bundle systems. Later, it was determined that
they could be used to control aeolian vibration as well as wakeinduced
oscillation. The spacer damper is designed to maintain
the original geometry of the bundle system against loads. It must
also restore the bundle to normal posture after experiencing
severe loads due to short-circuit currents, ice and wind.