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Electrical Discharge Detector Pen
Since the 1990’s the use of variable-frequency drives (VFDs) to control AC motors has become very common, as they can save energy. However, the drawback of using VFDs is the fact that electrical motors are more vulnerable to suffer from electrical erosion in the bearings caused by electrical discharge currents. Electrical erosion can cause bearings to fail very prematurely causing motor failure and unplanned downtime. Until now there has not been an easy cost effective method to detect electrical discharge currents in electric motor bearings. Thanks to the EDD Pen this is now possible. Operating with only two buttons, the EDD Pen allows everybody to detect electrical discharge currents remotely in a safe way. Unlike other traditional methods you can detect the electrical discharge currents directly rather than measuring the effects in later stages when damage has already occurred. When incorporated into a predictive maintenance program, the EDD Pen can significantly prevent unplanned machine downtime.
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SKF Maintenance Products, part of the SKF group has launched the SKF Electrical Discharge Detector Pen. It is a handheld instrument innovated by SKF with a patent applied for, which detects the number of electrical discharges in electric motor bearings remotely.
