Monthly Archives: January 2016

PRO Series Rings Have 6 Rows of Conductive Microfibers for Maximum Bearing Protection

Shaft protection ring

AEGIS® PRO Series Rings protect large
medium-voltage AC motors (as well as
large low-voltage AC and DC motors) from
VFD-induced bearing damage. The AEGIS®
PROSL (shown above) and all AEGIS® PRO
Series Rings have 6 rows of conductive
microfibers that provide the high current-
carrying capacity needed for these large
motors.

New AEGIS® PRO Series Rings are specially designed to protect medium-voltage motors, generators, and turbines as well as large low-voltage AC motors (over 500 HP) and large DC motors (over 350 HP) from damaging VFD-induced shaft voltages and bearing currents.

Available in solid- and split-ring versions for shaft diameters from 2″ (50mm) to 31.5″ (800mm), these rings have 6 rows of conductive microfibers that completely encircle the motor shaft, providing many millions of contact points that channel harmful shaft voltages away from motor bearings and safely to ground.

Solid AEGIS® PRO Rings are ideal for installation on new motors before they are put into service or in-service motors when they are repaired.  Split PRO Rings are designed for fast, easy field installation around the shaft of a coupled motor.

The new product line includes:

AEGIS® PROSL: Available in solid- and split-ring versions for shafts of 2″ (50mm) to 16.6″ (400mm) in diameter.  It has a maximum OAL of 0.650″ (15.88mm).

AEGIS® PROSLR: Specially designed for severe-duty environments, the AEGIS® PROSLR is also available in solid- or split-ring versions for shafts of 2″ (50mm) to 16.6″ (400mm).  To ensure maximum operating reliability in severe environments, it includes an O-ring barrier installed on its front and back faces to protect from the ingress of contamination.  It has a maximum OAL of 0.750″ (19.05mm).

AEGIS® PROMAX: Designed to protect the largest motors and generators, the AEGIS® PROMAX is a split ring for shafts of 16.6″ (400mm) to 31.5″ (800mm) in diameter.  With a maximum OAL of 1.545″ (39.24mm), each AEGIS® PRO MAX Ring is custom designed for the specific application.

AEGIS® PROMR: Combines an AEGIS® PROSL bearing protection ring with an AEGIS® SGR monitoring ring (separated by an insulated phenolic spacer) in a single assembly.  Available in solid- and split-ring versions, it provides bearing protection and real-time monitoring capability for remote or hard-to-access motors.  Available for shafts of 2″ (50mm) to 16.6″ (400mm), it has a maximum OAL of 1.312″ (33.32mm).

Universal Mounting Brackets: Designed to accommodate shaft shoulders, slingers, or other motor face protrusions, Universal Mounting Bracket Kits speed and simplify mounting of all AEGIS® PRO Series Rings.

AEGIS® PRO Series Rings are designed to protect larger motors in processes and applications where the cost of bearing damage, motor repairs, and downtime can be staggering.  Don’t risk motor damage and the high cost of lost production.  Protect your large motors with AEGIS® PRO Series Rings!

For more information on AEGIS® PRO Series Rings, click here.

For Return on Investment Analysis on AEGIS® PRO Series Rings, click here.

To download a copy of the new Edition 3 Bearing Protection Handbook with complete information on new AEGIS® PRO Series Rings, click here.

The AEGIS® Shaft Voltage TesterTM is available in different packages including different accessories and warranties.

The AEGIS® Shaft Voltage TesterTM is
available in different packages including
different accessories and warranties.

Electro Static Technology is announcing the launch of its new AEGIS® Shaft Voltage TesterTM Digital Oscilloscope– ready to ship now!

Ready to use out of the box, this 100 MHz oscilloscope comes preconfigured to take shaft voltage measurements and includes everything you need to test voltage levels on the spinning shaft of a motor.  It displays digital shaft voltage readings on its high-resolution color display as soon as you touch the motor shaft with the specially designed AEGIS® Shaft Voltage Probe. With dual inputs, the unit combines oscilloscope, multimeter, and recorder functions in a single unit.

A probe with special 1:1 and 10:1 settings includes special conductive microfiber tips for exceptional shaft contact, as well as a probe holder with a magnetic base, and a compact carrying case.

Advanced functions of this 2-channel digital oscilloscope include sampling rates of 1 GSa/s to 50 GSa/s, and a 5-hour rechargeable/replaceable lithium-ion battery pack. The oscilloscope accommodates standard set-up interfaces, including removable flash USB drives for easy image capture and storage.

A special AEGIS® One-Touch™ screen capture feature allows recording readings with a push and hold of just one button.  Simply pushing and holding the “Save” button for 6 seconds captures screen images to a USB, simplifying data collection for reporting/analysis and eliminating the need to plug the scope into a computer.

The AEGIS® Shaft Voltage TesterTM Digital Oscilloscope can be configured for a variety of languages including English, French, German, Russian, Spanish, Simplified Chinese, Traditional Chinese, Portuguese, Japanese, Korean, Italian, and Arabic.

Replacement probe tips and spare batteries are also available.

All AEGIS® oscilloscopes are backed by a 90-day warranty.  A 2-year extended warranty is also available.

For more information on the new AEGIS® Shaft Voltage TesterTM Digital Oscilloscope, click here, or see the Shaft Voltage Testing section of Edition 3 of the AEGIS® Bearing Protection Handbook.

AEGIS® PRO Series Rings Protect Pulp and Paper Plant Motors from VFD-Caused Bearing Failure

Paper Roller

Downtime in paper plants due to VFD induced motor bearing damage can be extremely costly, not only in terms of repair costs for equipment, but in terms of lost production.

Paper making is very demanding. To ensure tight control over critical process parameters, many motors are controlled by variable frequency drives (VFDs or inverters). These drives can be used to control the motors driving all manner of pumps and fans, grinders, winders and rewinders, and a host of related equipment.

 

But while VFDs allow precise control of motor speed or torque, they can also damage motor bearings and cause costly unplanned downtime. These drives create voltages on the shafts of the motors they control — voltages that can discharge through motor bearings. The resulting electrical bearing damage can cause bearing failure and stop production.

 

So the VFD technology employed to improve paper making processes also creates damage that can shut them down instead.  Paper Rolling MachineThese preventable bearing failures can cost hundreds of thousands of dollars in damaged equipment, repair costs, and lost production.

 

AEGIS® Shaft Grounding Rings protect motor bearings (and coupled equipment) by channeling shaft voltage discharge currents away from bearings safely to ground

 

An AEGIS® iPRO Ring (below) protects a 1000 hp winder motor from VFD-sourced bearing damage by channeling destructive shaft voltage discharges away from its bearings and safely to ground.

An AEGIS® PRO Ring (below) protects a 1000 hp
winder motor from VFD-sourced bearing damage
by channeling destructive shaft voltage discharges
away from its bearings and safely to ground.

AEGIS® SGR Rings are sized for low voltage motors of less than 100 hp.  The AEGIS® PRO Series Rings provides the high current carrying capacity needed for larger and medium-voltage motors.

 

By preventing extremely costly process downtime, AEGIS® Rings generate an impressive return on investment.

 

For more information on the AEGIS® PRO Series Ring, click here.

 

To review ROI calculations for an AEGIS® PRO Series Ring, click here.

 

For a case study on the installation of AEGIS® PRO Series Rings at a paper plant, click here.