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Summary of Contents for Aegis OSC-9200
- Page 1 SHAFT VOLTAGE TESTING GUIDE Shaft Voltage Tester Handheld Digital Oscilloscope AEGIS-OSC-9200...
- Page 2 Report template available at: Recommended Testing Equipment: AEGIS® Shaft Voltage Tester™ 100 MHz Digital Oscilloscope with a 10:1 Shaft Voltage Probe™ kit. We recommend a minimum 100MHz bandwidth to accurately measure the high frequency transitions associated with bearing discharge and VFD waveforms.
- Page 3 Peak to Peak voltage with AEGIS® ring installed With an AEGIS® ring installed, a bare steel shaft will typically show shaft voltage of 2 to 10 volts peak to peak (1 to 5 volts peak) depending on the power of the motor, ground noise, the conductivity of the shaft, and other factors.
- Page 4 Shaft Voltage Testing AEGIS® SVP TIP INSTALLATION AEGIS® Meter Probe PP510 Note: The AEGIS® meter comes with one SVP probe tip already installed) The probe has an insulated sleeve over the tip. Do not remove this cover. Set the probe to 10X.
- Page 5 TUNING THE PROBE (COMPENSATION) Now the scope is set up to fine-tune the probe. The AEGIS-OSC-9200 includes two prongs (under the right-side flap) that generate a square wave to help you fine-tune the probe’s compensation for maximum accuracy. This calibration must be done the first time a new probe is used, and should be checked periodically to ensure accurate waveform measurements.
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Page 6: Auto Button
When stopped, the more easily and save if desired. measurement. The message in the upper word STOP will appear in the upper left of left will change to “Trig’d” or “Auto”. the screen. AEGIS® Shaft Voltage Testing Guide... - Page 7 Press “s” to increase horizontal scale (narrower waveforms) Press “ns” to decrease horizontal scale (wider waveforms) The image at left has a timescale of 20 μs/div. It clearly shows a rise in voltage and an abrupt, sharp discharge (third peak). AEGIS® Shaft Voltage Testing Guide...
- Page 8 Screen capture may be done either while actively collecting data or while collection is paused: Press RUN/STOP to pause the screen. Voltage & time scales can be changed while screen is paused. Pressing RUN/STOP will resume data collection AEGIS® Shaft Voltage Testing Guide...
- Page 9 PEAK TO PEAK VOLTAGE (V ) WITH MEASURE The AEGIS-OSC-9200 offers two main methods to measure peak to peak voltage (Vpp): Measure, and Cursor. Press Measure and make sure Source = CH1. Press F2 for Type. This brings up a list of all available properties to Measure (Peak-Peak is first).
- Page 10 Before measuring the shaft voltage, take an EMI reading of electrical noise on the motor frame as a baseline. This noise may remain after installing the AEGIS® Ring. This reading will show ground noise or EMI being produced by the motor/drive system, or other systems in the area.
- Page 11 MEASUREMENTS USING THE AEGIS® GROUNDING SIMULATOR™ The AEGIS® Grounding Simulator™ can be used to simulate how the shaft voltage will change after an AEGIS® Ring is installed. It is a quick way of showing a “Before & After”. Since only a small number of conductive microfibers are touching the shaft the shaft voltage may be higher than when the circumferential AEGIS®...
- Page 12 31 Winterbrook Road Mechanic Falls ME 04256 USA Toll Free: +1 866 738 1857 +1 207 998 5140 Email: sales@est-aegis.com www.est-aegis.com © 2023 Electro Static Technology Form SVT3.0...
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