Description

The 489-P5-HI-A20-E is a type of multilin SR489 protective relay manufactured by GE Grid Solutions. Protective relays are devices that are used to detect abnormalities in power systems, such as overloads, short circuits, and other faults, and to isolate these faults from the rest of the system. The SR489 relay is designed to protect and control medium and high voltage power systems, including generator protection, transformer protection, and feeder protection. The 489-P5-HI-A20-E model of the SR489 relay is a specific configuration of the device, which includes the following features: P5: Phase Distance Protection HI: Harmonic Restraint and Sync-Check A20: 4-20mA Output with Breaker Failure Protection and Communications E: Enhanced Security These features provide specific functions and capabilities that are tailored to the needs of the power system being protected. The relay can be programmed and configured to meet the specific requirements of the power system, and can communicate with other devices in the system to coordinate protection and control functions.