New Vibezone

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Re: Sideband activity in spectrum

From: Dennis Swanepoel (ABB SA)
Remote Name: 147.110.52.117

Comments

Look if the sidebands occur at pole pass freq (Fp = #poles in the motor X Slip). That is if the vibraiton occur on the motor specifically. Usually this could be an indication of cracked or broken rotor bars/end rings. DennisW.Swanepoel@eskom.co.za

Last changed: October 16, 2007