Are Shaft Currents Affecting Your Machine Reliability ?
Source of Shaft Currents
⇒ Electrostatic
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Wet steam, product friction, etc.
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⇒ Electromagnetic
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Electrical machine inducted voltages and residual magnetism in components.
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Prevention and Protection
⇒ Reliable Shaft Earthing
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Use brushes with minimal contact resistance with the ability to maintain reliable contact at all times even in oil splash conditions.
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⇒ Components Free of Residual Magnetism
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Ensure ALL machine components are free of residual magnetism.
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Specify Gauss levels on new and repaired components.
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Demagnetise existing machinery during planned outages.
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Monitoring of Shaft Currents
⇒ Periodic
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Use a scope meter to trend magnitude and wave characteristic.
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Do not use an RMS multimeter.
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⇒ On Line Continuous
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Use the RDM monitor for on line display and alarming.
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Download data for further analysis.
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Connect to SCADA for remote alarming.
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Address
9 Ramble Road, Athlone Park
Durban, South Africa
Phone
+ 27 87 701 0458
info@westwardmonitoring.co.za