White Paper | Choosing the Right Tray Cable for Servo

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SUPERIOR ELECTRICAL PERFORMANCE In addition to its mechanical durability, the ÖLFLEX SERVO 7TCE electrical properties enable long-distance runs, limit buildup of electrical fields, and potential insulation breakdown. Installers tend to run TC-ER cables when sources of power, signal or data transmissions are generated at a central distribution cabinet located some distance away. In servo applications the drive is typically located in a cabinet to centralize equipment monitoring. Oftentimes, these longer cable runs result in greater resistance and capacitance in the line—a combination that can lead to voltage drops or the unintentional energization of switching devices. Conductors with poor insulation can inadvertently energize switch devices. Magnetic fields generated by insulation with high dielectric constants can trigger switch devices. This can be amplified with longer cable runs. The combination of higher charge capacity in long runs and poor insulation material can be detrimental to switches and other electro mechanical devices. A FLEXIBLE CABLE FOR VARIABLE SPEED APPLICATIONS

The 7TCE reduces these risks. Compared to other materials like PVC, the cable’s XLPE and EPR insulation has excellent electrical properties—one being a low dielectric constant, the measurement of a material’s ability to hold charge. The higher the constant, the more the material can hold charge. Material with a high dielectric constant will break down more easily than material with a low constant, resulting in current leakage to the ground. The XLPE insulation in the ÖLFLEX SERVO 7TCE and EPR insulation in the SERVO FD 7TCE is beneficial in a number of ways: • Reduced insulation thickness. Lighter cable with smaller ODs without compromising the strength needed for cold and crush impact tests required for TC-ER. • Low impedance. Impedance in cabling is impacted by two things: the current-induced magnetic field through the conductor, and the buildup of charge between conductors. Having a low dielectric constant reduces the formation of both. • Longer cable runs. Superior electrical properties maintain signal quality over longer distances.

LAPP 29 Hanover Road, Florham Park, NJ 07932 T. 800 774 3539

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2-27-19