Differential Relay suits transformer applications.

Press Release Summary:

Incorporating selectable transformer winding configuration, selective tripping of high/low-side breakers, and breaker health monitoring, iXP-420 also includes Virtual Test Set(TM) event record simulator. Protection features include over-excitation (V/Hz), under/over-voltage, phase overcurrent, negative-sequence overcurrent, and breaker fail-to-trip/fail-to-close indicators. Unit comes with IDEA Workbench(TM) graphical software-programming environment.

Original Press Release:

Cooper Power Systems Announces its New Idea(TM) Differential Relay for Transformer Applications

IDEA Workbench(TM) graphical software environment allows for easy addition of functions and features

South Milwaukee, WI, February 7, 2003 - Cooper Power Systems specifically designed its newest full-featured differential relay, the iXP-420, to provide comprehensive two-winding transformer protection, and monitoring and control. Unlike most relays for two-winding transformers, the iXP-420 incorporates comprehensive voltage and frequency protective functions.

Design characteristics of the iXP-420 specific to transformer applications include selectable transformer winding configuration, selective tripping of both high- and low-side breakers, and breaker health monitoring for both controlled breakers. The iXP-420 also includes a Virtual Test Set(TM) event record simulator for easy relay set-up and testing.

Protection features of the iXP-420 include two levels of over-excitation (V/Hz) protection, under- and over-voltage, phase overcurrent for each winding, negative-sequence overcurrent for each winding, and breaker fail-to-trip and fail-to-close indicators for both breakers.

For applications that require custom control logic, or where custom functions need to be added to the relay, the iXP-420 comes with the IDEA Workbench(TM), a revolutionary graphical software-programming environment that permits users to easily customize the iXP-420.

"The iXP-420 is an extremely versatile relay," said Jack McCall, director, Protective Relays for Cooper Power Systems. "The flexibility of its software makes it well-suited for any number of other applications, including series and shunt reactor protection, rotating machine protection, multi-feeder load shedding and restoration and bus differential protection."

The IDEA Workbench enables users to rapidly and accurately customize controls by using logic diagram and flowchart constructions methods. No equation-based or command-based logic programming is required. The IDEA Workbench feature of the iXP-420 allows users to:

o Create custom control and protection logic using over 400 programming signals and tools, all selectable from drag-off toolboxes
o Reassign targets and front panel pushbutton functionality
o Monitor and control practically every aspect of the relay's operation
o Create custom metering and measurement quantities
o Configure communications protocols to match existing SCADA system mappings

For further information on the iXP-420, or any Cooper Power Systems product, please call 1-877-CPS-INFO, or e-mail cooper@cooperpower.com

Company Information
Cooper Power Systems is a subsidiary of Cooper Industries, a diversified worldwide manufacturer of products to the electrical, commercial, and industrial markets. CPS manufactures distribution transformers, distribution switchgear, reclosers, capacitors, protective relays, voltage regulators, automated switches, cable accessories, surge arresters, transformer components, fuses, pole-line hardware, tools and engineering services for the electrical and industrial markets.

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