SEL-587 Current Differential Relay
The SEL-587 Current Differential / Overcurrent Relay provides protection for any two-input apparatus such as transformers, motors, generators, and reactors. Apply it for differential and overcurrent protection and use event reports for quick post-event analysis.
Front- and Rear-Panel Diagrams
Use single- or dual-slope percentage-restraint differential characteristics and overcurrent elements. Backup overcurrent protection provides high-speed operation, even with severe CT saturation, using the SEL Adaptive Overcurrent Element.
Facilitate traditional or advanced protection schemes using SELogic® control equations with SELogic variables and timers. Remotely control overcurrent elements via serial communications.
Monitoring and Recording
Eliminate panel-mounted ammeters with accurate metering functions. Use front-panel display of metered secondary current magnitudes and phase angles to facilitate commissioning work. Review event reports to analyze protection scheme operations.
Accommodate a wide variety of transformer and CT connections, and automatically calculate the correct tap values with user-friendly relay settings. a cSELE r a t o r® QuickSet™ SEL-5030 Software simplifies settings creation and relay communications.
Choose from Modbus®, ASCII, and binary protocols for communications with SCADA, local HMI, or modems