Electro Static Technology (AEGIS® Shaft Grounding Ring), an ITW Company

Save the date: We will be presenting a webinar on shaft grounding for motor reliability in water treatment on October 23rd. More details and registration below:

From Water Online, here's an article on Pentair Hydromatic HPE premium-efficient solids handling pumps. These pumps are available with an optional AEGIS ring for bearing protection. https://lnkd.in/efF2NqBM

EMS Grand Rapids posted this simple, but powerful, definition. With it, you can simply estimate your expected cost due to failure for a machine over its lifetime: With reliability (as defined) = R, cost of failure = (1 - R) x (cost to repair/replace + cost of downtime x time to repair/replace)* You can compare this expected cost with the up-front and lifetime costs (if any)** of mitigating measures and make an informed decision on whether to take those measures. For example, an AEGIS ring for a motor on a drive might cost a few hundred dollars. How does that compare to the expected cost of motor bearing failure due to electrical damage? *This equation assumes the equipment fails at most once over its lifetime... not always the case! So it is a lower limit. At R = 0.95, there is ~ 0.1% risk of repeated failures; at R = 0.9, the risk is over 1%. To continue the example of motors on drives, estimates of failure rates due to electrical bearing damage range from 20% up to 50%, giving R = 0.8 at most, even neglecting other failure modes. **To be more rigorous, you would also calculate R with the mitigating measures in place, and add the expected cost of failure with mitigation to the up-front and lifetime costs of mitigation. The lifetime costs can include maintenance to the mitigation (like adjusting carbon brushes) and increased power consumption (due, for example, to voltage drop caused by VFD output filters).

Here's a good new article on troubleshooting motor-drive systems, by Michael Crepps at Fluke Corporation, from Industrial Equipment News.

"Variable Speed Drive" and "Variable Frequency Drive" are often used interchangeably, but that's not quite right. The Hydraulic Institute clarifies below.

Next wednesday October 2nd, at 10:30 EDT/14:30 GMT, our own Assim AWAN and Carlos Aroeira with DMC Engenharia e Sistemas Ibéricos will be giving a webinar (in English) on protecting the bearings of motors on variable frequency drives. Register at https://lnkd.in/eHvksEZW

Bearing failure is the number one cause of unplanned motor downtime and grounding rings can prevent premature wear and electrical damage. Selecting the correct grounding ring size is essential to ensure the conductive microfibers have proper contact with the motor shaft. Size your grounding ring based on your motor shaft diameter. Shop Inventory: https://lnkd.in/gcvTwNPj Electro Static Technology (AEGIS® Shaft Grounding Ring), an ITW Company

Here's another great video on electrical bearing protection for motors on VFDs, from eMotors Direct Inc.

Rappel : Webinaire à venir sur la protection des roulements contre les courants de fuite. Nous sommes ravis d'annoncer notre premier webinaire en français sur la protection électriques des roulements. Il aura lieu le mercredi 18 septembre à 13h00 GMT/15h00 heure de Paris/09h00 heure du Québec. Assim AWAN, Responsable des Ventes Industrielles pour l'Europe de l'Ouest, discutera des meilleures pratiques de protection électriques des paliers et répondra à vos questions. Cette formation équivaut à une Heure de Développement Professionnel (HDP). https://lnkd.in/ewEk5NCE

On October 2nd at 10:30 EDT/14:30 GMT, our own Assim AWAN and Carlos Aroeira with DMC - Engenharia e Sistemas Ibéricos will be presenting a webinar on protecting the bearings of motors on variable frequency drives. Get more information and the registration link below.