The overload relay identifies motors contributing to themonthly peak demand and power factor line items on utility bills andcommunicates this and diagnostic information using DeviceNet and RSEnergyMetrixsoftware. It also assists in activity-based cost accounting and verifyingenergy-reduction initiatives. In addition, the overload relay is equipped withAllen Bradley DeviceLogix Intelligent Component Technology, which integrateslogic-solving capability into the overload relay. This provides users with basicdigital control when a programmable controller is not available. It also can beused to turn off a motor in the event of lost communications within a controlsystem.
The relay also helps protect against voltage issues such asunder voltage, voltage unbalance, phase loss, frequency and phase rotationbefore the contactor coil is energized. While the motor is powering a load, theoverload relay protects the motor based on excessive real power, reactivepower, apparent power and power factor. The relay accommodates currents rangingfrom 0.4 A to 860 A, as well as currents up to 5,000 A using external currenttransformers.
Rockwell AutomationInc.
www.rockwellautomation.com/components

Do you have experience and expertise with the topics mentioned in this content? You should consider contributing to our WTWH Media editorial team and getting the recognition you and your company deserve. Click here to start this process.