Electro Static Technology Releases New Digital Oscilloscope with Everything You Need to Test VFD-controlled Motors for Destructive Shaft Voltages

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Motors run by variable frequency drives can suffer electrical bearing damage. The AEGIS® Shaft Voltage Tester™ Digital Oscilloscope detects damaging shaft voltages and gives the user the chance to take protective measures against this damage.

Industrial motors controlled by variable frequency drives (VFDs) are at risk of electrical bearing damage. The new AEGIS® Shaft Voltage Tester™ Digital Oscilloscope makes it easier than ever to check in-service motors for damaging VFD-induced shaft voltages and head off bearing damage and costly unplanned equipment downtime.

The AEGIS® Shaft Voltage Tester™ Digital Oscilloscope is specially designed and configured to take and capture highly accurate voltage measurements from the spinning shafts of motors. A complete package, the CAT II/III digital oscilloscope comes with a special conductive microfiber tipped probe for exceptional shaft contact, a probe holder with magnetic base, and a compact carrying case. The 2-channel, full-function 100 MHz oscilloscope has a 5.7” TFT LCD color display, a multi-language user interface, and a 5-hour rechargeable/replaceable lithium-ion battery pack. The oscilloscope is capable of sampling rates of 1 GSa/s to 50 GSa/s and has a USB port for data transfer or flash drive storage. The handy AEGIS® One-Touch TM screen capture feature dramatically simplifies data collection for reporting and analysis. Screen images can be saved to a USB simply by pushing and holding the “Save” button for 6 seconds. The AEGIS® Digital Oscilloscope can be configured for a variety of languages including English, German, French, Italian, Spanish, Portuguese, Russian, Simplified Chinese, Traditional Chinese, Korean, and Arabic.

With dual inputs, the AEGIS® Shaft Voltage Tester™ combines oscilloscope, multimeter, and recorder functions in a single unit. The multimeter function provides measurements for resistance (ohms), continuity, diode capacitance, DC volts, AC volts, DC current, and AC current―all at 6000 count display resolution.

AEGIS® Shaft Voltage Tester™ Digital Oscilloscopes are offered in several packages. Accessories include a 9V/4A power adapter, 1X/10X oscilloscope probes, test leads for the multimeter, a probe calibration tool, a rechargeable/replaceable 5-hour battery, and a USB flash drive with user manual. In addition to the standard 90-day warranty, an extended 2-year warranty is available. Replacement high-density conductive microfiber probe tips and spare batteries are also available.

If harmful shaft voltage levels are found, installing an AEGIS® Ring will divert these voltages safely to ground, extending motor life and ensuring the reliable, long-term operation of the VFD-driven motor system.

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Adam Willwerth
since: 11/2015
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