How to Test for bad BUS Capacitors - A Galco TV Tech Tip | Galco

If the bus terminals are not accessible, you will not be able to test this without removing the drive and removing the covers for testing. With a light load on the drive (aim for under 20 percent of the rated output current), you should measure less than 1 volt AC RMS if your drive’s bus capacitors are in good shape.

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With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
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