October 4, 2007 -- Belden has expanded its line of Variable Frequency Drive (VFD) cables designed to carry power from industrial AC drive systems to AC motors to include eight symmetrical ground design, 3-conductor 16 to 2 AWG VFD cables. According to the company, the cables are designed and engineered to support a range of installation options and customer requirements, including MSHA and UL Direct Burial approvals. Further, the cables complement the current symmetrical ground design products available in 1 to 4/0 AWG.
Belden says the Symmetrical VFD cables feature a highly effective dual copper tape shielding to provide a low resistance path to ground, which improves common mode current containment. In addition, the dual spirally applied tapes provide improved flexibility and highly effective radiated and conducted noise protection. Three symmetrical bare ground wires provide a balanced ground system, which reduces AC motor shaft voltage. This, in turn, reduces the likelihood of premature motor bearing or motor insulation failure.
The company says that all of its Variable Frequency AC motor drive output cables feature a robust construction designed to deliver superior electrical performance and reliability in the most demanding industrial operating environments, characterized by high voltage spikes, high noise levels and adverse environmental conditions. The cables offer industrial-grade XLPE insulated circuit conductors, stranded tinned copper circuit conductors, and industrial-grade, sunlight and oil-resistant PVC jackets.
For deployment in extremely hazardous environments, where cables may be exposed to the risk of crushing or cut-through, the Symmetrical VFD cables are also available in aluminum or steel armored versions.
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