Stockbridge Vibration Dampers

Stockbridge Vibration Damper Introduction

The clamp of the vibration damper is made of high-strength aluminum alloy which is capable of supporting the damper and preventing damage or chafing of the conductor during erection or continued operation. The clamp has a smooth and permanent grip to keep the damper in position on the conductor without damaging the strands or causing premature fatigue failure of the conductor under the clamp. The clamp groove is in uniform contact with the conductor over the entire clamping surface except for the rounded edges. The groove of the clamp body and clamp cap is smooth and free from projections, grit, or other materials which could cause damage to the conductor when the clamp is installed. Clamping bolts are provided with self-locking nuts and are designed to prevent corrosion of threads or loosening in service.

The damper mass is made of hot dip galvanized mild steel/cast iron or a permanent mold cast zinc alloy. All castings are free from defects such as cracks, shrinkage, inclusions, blowholes, etc. The surface of the damper masses is smooth.

Technical datasheet

The body and keepers are made of aluminum alloy, the counterweight is made of gray iron, hot-dip galvanized. Other parts are made of hot-dip galvanized steel.

The vibration damper placement chart for spans will be provided by Shenyang Tronco Electric Co., Ltd including the location of dampers for various combinations of spans and line tensions clearly indicating the number of dampers to be installed per conductor per span, placement distances, placement recommendation depending upon the type of suspension clamps, the influence of mid-span compression joints, repair sleeves and armor rods in the placement of dampers.