--- title: What is Shaft Grounding? | AEGIS® Blog | Variable Frequency Drive description: Variable Frequency Drive | News and articles about AEGIS® Shaft Grounding Rings and other elements of electric motor reliability. --- [![Electro Static Technology](https://blog.est-aegis.com/hubfs/raw_assets/public/public/images/electro-static-technology.svg "Electro Static Technology")](https://www.est-aegis.com/) [![Aegis](https://blog.est-aegis.com/hubfs/raw_assets/public/public/images/Aegis.svg "Aegis")](https://www.est-aegis.com/) - [+1 866-738-1857](tel:+1%20866-738-1857) - [Products](https://www.est-aegis.com/products/) - [AEGIS® SGR – for motors under 500 HP/375 kW](https://www.est-aegis.com/product/sgr/) - [AEGIS® uKIT – for common NEMA/IEC frame size](https://www.est-aegis.com/product/sgr-ukit/) - [AEGIS® RPPR – for reactor recirculating pumps](https://www.est-aegis.com/rppr-resources/) - [AEGIS® EV and EVO Rings - for electric vehicles](https://www.est-aegis.com/product/ev-evo-rings/) - [AEGIS® PRO Series – for motors over 300 HP/225 kW](https://www.est-aegis.com/product/pro-series/) - [Shaft Voltage Testing and Accessories](https://www.est-aegis.com/product/mounting-accessories/) - [Online Product Catalog](https://catalog.est-aegis.com/) - [AEGIS® 2-Year Extended Warranty](https://www.est-aegis.com/product/extended-warranty/) - [Applications](https://www.est-aegis.com/applications/) - [Electric Vehicle Solutions](https://www.est-aegis.com/applications/electric-vehicle-solutions/) - [Food & Beverage](https://www.est-aegis.com/applications/food-beverage/) - [HVAC](https://www.est-aegis.com/applications/hvac/) - [Industrial & Chemical](https://www.est-aegis.com/applications/industrial-chemical/) - [Other Industries](https://www.est-aegis.com/applications/other-industries/) - [Power Generation & Renewable Energy](https://www.est-aegis.com/applications/power-generation-renewable-energy/) - [Transportation](https://www.est-aegis.com/applications/transportation/) - [Water Treatment](https://www.est-aegis.com/applications/water-treatment/) - [Bearing Protection](https://www.est-aegis.com/bearing-protection/) - [Shaft Voltage & Bearing Currents](https://www.est-aegis.com/bearing-protection/shaft-voltage-and-bearing-currents/) - [Fluting & Bearing Inspection](https://www.est-aegis.com/bearing-protection/fluting-and-bearing-inspection/) - [Best Practices & Installation](https://www.est-aegis.com/bearing-protection/best-practices-and-installation/) - [Resources](https://www.est-aegis.com/resources/) - [AEGIS® Bearing Protection Handbook](https://www.est-aegis.com/resources/handbook/) - [IEEE-841, Hazardous Locations, & AEGIS®](https://info.est-aegis.com/technical-codes-and-ieee-841-standards) - [Recorded Webinars Library](https://www.est-aegis.com/resources/recorded-webinars/) - [Installation Instructions](https://www.est-aegis.com/resources/installation-instructions/) - [Videos](https://www.est-aegis.com/resources/videos/) - [Technical Papers](https://www.est-aegis.com/resources/technical-papers/) - [Case Studies](https://www.est-aegis.com/resources/case-studies/) - [Specifying AEGIS®](https://www.est-aegis.com/resources/specifying-aegis/) - [Request Training](https://www.est-aegis.com/resources/training/) - [Product Sheets](https://www.est-aegis.com/resources/product-sheets/) - [About](https://www.est-aegis.com/about/) - [News](https://blog.est-aegis.com/) - [Tradeshows](https://www.est-aegis.com/about/tradeshows/) - [Blog](https://blog.est-aegis.com/) - [Where to Buy](https://www.est-aegis.com/where-to-buy/) - [Distributors](https://www.est-aegis.com/where-to-buy/distributors?type=Distributor) - [Trained Installers](https://www.est-aegis.com/where-to-buy/installers?type=Installer) - [Explosion Proof Installers](https://www.est-aegis.com/where-to-buy/installers?type=Explosion%20Proof%20Installer) - [Motors & Seals with AEGIS® Installed](https://www.est-aegis.com/where-to-buy/oems-with-aegis/) [Contact Us](https://www.est-aegis.com/contact/) - [+1 866-738-1857](tel:+1%20866-738-1857) ## Posts about Variable Frequency Drive:     [Home](https://www.est-aegis.com/) » Blog #   Blog [![shaft grounding in Marine Applications](https://blog.est-aegis.com/hs-fs/hubfs/ship-shaftgen-install.png?width=365&name=ship-shaftgen-install.png)](https://blog.est-aegis.com/marine-applications-shaft-grounding?hsLang=en-us) ## [Shaft Grounding in Marine Applications](https://blog.est-aegis.com/marine-applications-shaft-grounding?hsLang=en-us) Variable frequency drives are used with electric motors and generators in many systems, from HVAC... [Read More](https://blog.est-aegis.com/marine-applications-shaft-grounding?hsLang=en-us) [![Hockey ice rink](https://blog.est-aegis.com/hs-fs/hubfs/hockey_dreamstime_s_13656499.jpg?width=365&name=hockey_dreamstime_s_13656499.jpg)](https://blog.est-aegis.com/cold-weather-vfds?hsLang=en-us) ## [Cold Weather Applications of Variable Frequency Drives](https://blog.est-aegis.com/cold-weather-vfds?hsLang=en-us) We talk a lot in the pages of this blog about different applications that can benefit from... [Read More](https://blog.est-aegis.com/cold-weather-vfds?hsLang=en-us) [![Mining cars in a precious metal mine](https://blog.est-aegis.com/hs-fs/hubfs/minecarts_dreamstime_s_52427722.jpg?width=365&name=minecarts_dreamstime_s_52427722.jpg)](https://blog.est-aegis.com/variable-frequency-drives-in-mining?hsLang=en-us) ## [Variable Frequency Drives in Mining](https://blog.est-aegis.com/variable-frequency-drives-in-mining?hsLang=en-us) Mining has been vital to civilization since at least the Bronze Age. In today’s electrified world,... [Read More](https://blog.est-aegis.com/variable-frequency-drives-in-mining?hsLang=en-us) [![slit u kit](https://blog.est-aegis.com/hs-fs/hubfs/uKIT-Split.jpg?width=365&name=uKIT-Split.jpg)](https://blog.est-aegis.com/harmonics-and-bearing-currents?hsLang=en-us) ## [On the Other Side of the Drive: Harmonics and Bearing Currents](https://blog.est-aegis.com/harmonics-and-bearing-currents?hsLang=en-us) An attendee at a recent webinar asked us about electrical bearing damage by harmonic currents... [Read More](https://blog.est-aegis.com/harmonics-and-bearing-currents?hsLang=en-us) [![Comparison of 20 Year TCO](https://blog.est-aegis.com/hs-fs/hubfs/fluted%20bearing.png?width=365&name=fluted%20bearing.png)](https://blog.est-aegis.com/five-most-common-causes-bearing-failure?hsLang=en-us) ## [The Five Most Common Causes of Bearing Failure](https://blog.est-aegis.com/five-most-common-causes-bearing-failure?hsLang=en-us) Although we talk in this blog mainly about[electrical bearing](https://www.est-aegis.com/products/)damage, there are plenty of other... [Read More](https://blog.est-aegis.com/five-most-common-causes-bearing-failure?hsLang=en-us) [![Comparison of 20 Year TCO](https://blog.est-aegis.com/hs-fs/hubfs/Imported_Blog_Media/Motor-comparison-chart-253x300.png?width=365&name=Motor-comparison-chart-253x300.png)](https://blog.est-aegis.com/care-total-cost-owning-electric-motor?hsLang=en-us) ## [Why Should You Care About the Total Cost of Owning an Electric Motor?](https://blog.est-aegis.com/care-total-cost-owning-electric-motor?hsLang=en-us) Last month, we discussed Volume 3 of the 2021 MSMA report on potential savings through improved... [Read More](https://blog.est-aegis.com/care-total-cost-owning-electric-motor?hsLang=en-us) [![](https://blog.est-aegis.com/hs-fs/hubfs/MSMA3_figES1-ind.png?width=365&name=MSMA3_figES1-ind.png)](https://blog.est-aegis.com/takeaways-from-the-2021-doe-motor-system-market-assessment-part-3?hsLang=en-us) ## [Takeaways from the 2021 DoE Motor System Market Assessment: Volume 3](https://blog.est-aegis.com/takeaways-from-the-2021-doe-motor-system-market-assessment-part-3?hsLang=en-us) In 2016, the U.S. Department of Energy initiated a Motor System Market Assessment (MSMA), led by [...](https://www.lbl.gov) [Read More](https://blog.est-aegis.com/takeaways-from-the-2021-doe-motor-system-market-assessment-part-3?hsLang=en-us) [![](https://blog.est-aegis.com/hs-fs/hubfs/pwm-carrier-freq.png?width=365&name=pwm-carrier-freq.png)](https://blog.est-aegis.com/vfd-switching-frequency-bearing-current?hsLang=en-us) ## [VFD Switching Frequency & Bearing Current](https://blog.est-aegis.com/vfd-switching-frequency-bearing-current?hsLang=en-us) At almost every Q&A session we hold, the question comes up: "Does VFD switching frequency affect... [Read More](https://blog.est-aegis.com/vfd-switching-frequency-bearing-current?hsLang=en-us) [![](https://blog.est-aegis.com/hs-fs/hubfs/Imported_Blog_Media/Small_variable-frequency_drive_-261x300.jpg?width=365&name=Small_variable-frequency_drive_-261x300.jpg)](https://blog.est-aegis.com/should-you-use-a-variable-frequency-drive?hsLang=en-us) ## [Should You Use a Variable Frequency Drive?](https://blog.est-aegis.com/should-you-use-a-variable-frequency-drive?hsLang=en-us) There is a lot of hype about using variable frequency drives (VFDs) to control motors, both pro and... 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