CABLE BEND

Tech Tip: Allowable Bend Radius

This Quarter’s Tech Tip provided courtesy of Leviton – Technology Partner of Datatrend
bend

Bend radius is the amount of bend that can occur before a cable may sustain damage or increased attenuation and limit bandwidth performance. It is important that you do not exceed the minimum bend radius. The allowable bend radius varies based on cable type, outside diameter (OD), and the condition of the cable under stress both during installation (tensile load) and after installation when the cable is reset (no-load).

Allowable-Bend-Radius-chart

Remember, violating the bend radius isn’t the only way to limit performance. Excessive pulling tension and overly tight fasteners can cause transmission problems and micro-bends in optical fiber cables, leading to high signal losses.