The GE Multilin 489-P5-HI-A20-E-H is a highly efficient generator management relay designed to provide advanced protection and monitoring for generators, even in challenging environments. It boasts a robust construction with a conformal coating to ensure durability. Some of its key features include:

• Generator stator differential protection
• Comprehensive 100% stator ground protection
• Loss of excitation protection
• Distance backup protection
• Reverse power (anti-motoring) protection
• Overexcitation protection
• Various networking interfaces (RS232, RS485, 10Mbps copper Ethernet)
• Support for multiple protocols (ModBus™ RTU, ModBus™ TCP/IP, DNP 3.0 Level 2)

You can easily configure and monitor this relay using the user-friendly EnerVista 489 Setup Software.

Features

• Cutting-edge protection and monitoring capabilities for generators
• Robust construction with a protective conformal coating
• Wide range of protection features, including stator differential and ground protection
• Specialized protection against loss of excitation and reverse power
• Multiple networking interfaces and protocol support for seamless integration
• User-friendly configuration and monitoring via EnerVista 489 Setup Software

Technical Specifications

• Phase CT secondaries: 5 A
• HI control power: 90-300 VDC and 70-265 VAC at 48-62 Hz
• Analog outputs: 4 to 20 mA
• Display: Enhanced LCD with a larger screen compared to the basic display
• Environmental protection: Conformal coating for harsh environments
• Output status LED indicators: Trip (1), Auxiliary (2, 3, 4), Alarm (5), Service (6)
• Generator status LED indicators: Breaker Open, Breaker Closed, Hot Stator, Negative Sequence, Ground, Loss of Field, VT Failure, Breaker Failure
• 489 status LED indicators: 489 In Service, Setpoint Access, Computer RS232, Computer RS485 / Auxiliary RS485, Alternate Setpoints, Reset Possible, Message
• Accessories: EnerVista 489 Setup Software, SR 19-1 PANEL, SR 19-2 PANEL, SCI MODULE, Phase CT, HGF3, HGF8, HGF8, 489 1 ⅜ inch collar, and 489 3-inch collar