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Multi-Bundle Conductor Spacer Dampers

Property Specification

Type: Multi-Bundle Conductor Spacer Damper (Triple, Quad, and Hexagonal Configurations)

Features: Engineered specifically for triple-, quad-, and hex-bundled transmission lines, this spacer damper utilizes advanced elastomeric damping inserts to maximize energy dissipation and prevent conductor fatigue, eliminating the requirement for separate vibration dampers. Available in two distinct structural builds: Type “B,” a lightweight yet highly efficient model, and Type “C,” a heavy-duty variant compliant with stringent National Grid operational specifications. Each unit features elastomer-lined conductor clamps secured via high-strength quarter-turn fasteners to guarantee precise clamping pressure during installation.

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Description

Technical Parameters

Conductor Outer Diameter (inches) Conductor Outer Diameter (mm) Available Frame Class Available Bundle Layout Standard Sub-Span Spacing Fastener / Attachment Style Thermal Rating Option
0.673 – 0.713 17 – 18 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
0.714 – 0.752 18 – 19 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
0.753 – 0.791 19 – 20 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
0.792 – 0.831 20 – 21 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
0.832 – 0.870 21 – 22 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
0.871 – 0.909 22 – 23 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
0.910 – 0.949 23 – 24 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
0.950 – 0.988 24 – 25 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
0.989 – 1.028 25 – 26 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.029 – 1.067 26 – 27 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.068 – 1.106 27 – 28 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.107 – 1.146 28 – 29 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.147 – 1.185 29 – 30 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.186 – 1.224 30 – 31 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.225 – 1.264 31 – 32 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.265 – 1.303 32 – 33 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.304 – 1.345 33 – 34 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.346 – 1.382 34 – 35 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.383 – 1.421 35 – 36 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.422 – 1.461 36 – 37 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.462 – 1.500 37 – 38 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.501 – 1.539 38 – 39 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.540 – 1.579 39 – 40 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.580 – 1.618 40 – 41 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.619 – 1.657 41 – 42 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.658 – 1.697 42 – 43 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.698 – 1.736 43 – 44 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.737 – 1.776 44 – 45 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)
1.777 – 1.821 45 – 46 B Type / C Type Tri (3) / Quad (4) / Hex (6) 18″×18″×18″ / 25.5″×18″×18″ Quarter Turn / Standard Bolt / Shear-Off Bolt Standard / High-Temp (HT)

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