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PFISTERER Ges.m.b.H.

PFISTERER Ges.m.b.H.

PFISTERER Ges.m.b.H.

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Stockbridge dampers by PFISTERER Ges.m.b.H.

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Stockbridge Dampers - Excellence in Aeolian Vibration Damping

Fatigue failures of overhead conductor strands due to wind induced vibrations were observed from the beginning of the last century.
The most effective protection device was invented by George Stockbridge in 1924 in the form of an inertial energy absorber equipped with a stranded steel cable holding two weights. Since then, the Stockbridge’s vibration damper underwent several design and manufacturing changes that increased its performance and endurance.
Despite many other damping devices beeing invented during the last century, the Stockbridge type vibration damper is still the best technical and economical solution for the control, within the safety limits, of the overhead cable vibrations.

PFISTERER vibration dampers are designed to:

  • Control aeolian vibration in each span of the line within the internationally accepted limits with the minimum number of units
  • „Maintain damping capacity over the entire range of ambient temperatures and for the whole expected life of the line
  • „Be free from corona at the maximum voltage of the line when installed on the phase conductors
  • „Be installed and removed on energized lines;
  • „Be maintenance-free for the whole expected life of the line
  • „Maintain a suitable grip on the cable resisting the loosening effect of vibrations
  • „Guarantee that individual components are secured against becoming loose in service

PFISTERER can provide a full package including:

  • Vibration damping study and design of the most appropriate damping system for any specific project, at offer stage
  • „Evidence of comprehensive type testing and intensive quality control during production
  • „Supply of vibration damper units manufactured in accordance with the most modern technology
  • „Supply of clear installation instructions and availability for any further client’s requirement
  • „Capacity to perform field vibration measurements using vibration recorders designed and manufactured by PFISTERER

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