Rockwell Automation Introduces Solid-State Overload Relay Featuring Voltage Protection and Energy Monitoring

Rockwell Automation 23/03/2010

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Allen-Bradley Bulletin 193-EC5 E3 Plus solid-state overload relay provides enhanced motor protection and motor energy consumption information, helps users improve energy efficiency and protect electric motor investments

Rockwell Automation has expanded its overload relay family with the new Allen Bradley Bulletin 193-EC5 E3 Plus solid-state overload relay, featuring voltage protection and energy monitoring. Part of the E3 Plus family, the new overload relay combines current and voltage protection with enhanced power monitoring and diagnostic capabilities, helping users improve energy efficiency and safeguard critical electric motor loads. The new overload relay is specially designed for low voltage applications in material handling, water/wastewater, process, petrochemical, and minerals and mining.

“Customers want to be able to monitor consumption patterns and adjust their manufacturing procedures to use electricity more efficiently,” said Bill Martin, product manager, Rockwell Automation. “The Bulletin 193-EC5 E3 Plus relay meets this demand by providing current, voltage and power-quality information of a specific motor. This capability in turn helps speed troubleshooting, minimise downtime and reduce energy costs.”

The new solid-state overload relay also helps protect against voltage issues, such as under voltage, voltage unbalance, phase loss, frequency and phase rotation before the contactor coil is energised. While the motor is powering a load, the overload relay protects the motor based on excessive real power (kW), reactive power (kVAR), apparent power (kVA) and power factor. The overload relay accommodates currents ranging from 0.4A to 860A, as well as currents up to 5,000A using external current transformers.