High-Frequency Ground Straps for VFD-Driven Motors, Systems
Electro Static Technology, Mechanic Falls, Maine, released the AEGIS high-frequency ground straps, designed to ensure a very low-impedance path to ground for high-frequency currents generated by VFD-driven motors and systems.
Non-zero impedances within a ground system can give rise to transient voltages and ground system currents that can travel along motor shafts and damage motor bearings. The AEGIS HF ground straps consist of 12-inch-long, flat-braided, tinned copper straps with a circular hole on one end for easy installation around the foot-mounting screw of NEMA- or IEC-frame motors and a ring terminal on the opposite end.