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Shaft Grounding/Monitoring Ring serves critical applications.

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Shaft Grounding/Monitoring Ring serves critical applications.
Shaft Grounding/Monitoring Ring serves critical applications.
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July 22, 2014 - Featuring real-time functionality, AEGIS® iPRO-MR combines shaft voltage bearing protection with continuous monitoring of shaft voltage levels from remote location. Assembly features 8 rows of conductive microfiber: 6 provide bearing protection, while 2 isolated rows allow for voltage monitoring. Combined shaft grounding ring and shaft monitoring ring promotes uptime and reliability of motors and generators in critical applications.

New Aegis® IPRO-MR Monitoring Ring Combines Shaft Grounding and Shaft Current Monitoring for Critical Applications

Electro Static Technology
31 Winterbrook Rd.
Mechanic Falls, ME, 04256

Press release date: July 17, 2014

MECHANIC FALLS, ME — Electro Static Technology’s new AEGIS® iPRO-MR Ring combines shaft voltage bearing protection with continuous monitoring of shaft voltage levels from a remote location—all in real time. The AEGIS® iPRO-MR is an AEGIS® Shaft Grounding Ring and a shaft monitoring ring in one, ensuring optimum uptime and reliability of large motors and generators in critical applications. The iPRO-MR is ideal for the protection of motors in remote locations that cannot be easily monitored or maintained. For complete details on the iPRO-MR Shaft Grounding/Monitoring Ring, visit

The rugged, highly reliable, and maintenance-free split-ring AEGIS® iPRO prevents damage that could otherwise cause generator or motor failure, unplanned downtime, costly repairs, and lost revenues.  Available in a range of sizes to accommodate even the largest motor shaft diameter, the iPRO shaft grounding ring comes in mating halves to facilitate field retrofits on coupled equipment. With multiple rows of conductive microfibers completely surrounding the shaft, it provides millions of discharge points for harmful shaft currents and is ideal for high-current motors controlled by variable frequency drives (VFDs), including low-voltage motors over 500 HP, medium-voltage motors, power generators, and OEM systems.

If not diverted, VFD-induced high-frequency shaft currents and circulating currents discharge through motor or generator bearings, or through coupled equipment, causing severe electrical damage.  Bearing failure and catastrophic generator/turbine failure can result in as little as six months or less. Compatible with current-monitoring equipment, the AEGIS® iPRO encircles the motor shaft with patented microfibers, providing a path of least resistance to ground and effectively diverting these currents away from bearings.

The AEGIS® iPRO is the longest-lasting and most effective shaft grounding system on the market available today.  It is engineered to handle high frequency shaft currents up to 100 MHz. It can be installed as part of a preventive maintenance program whenever bearings are replaced.

For more information, contact: Adam Willwerth, Sales and Marketing Manager, Electro Static Technology, 31 Winterbrook Road, Mechanic Falls, ME 04256, Toll-Free: 1-866-738-1857, TEL: (207) 998-5140, FAX: (207) 998-5143,
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