{"product_id":"general-electric-multilin-sr489-case-489-p5-hi-a20-e-generator-management-relay","title":"General Electric Multilin SR489-CASE 489-P5-HI-A20-E Generator Management Relay","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe General Electric Multilin 489-P5-HI-A20-E is a microprocessor-based generator management relay engineered for the comprehensive protection, control, and monitoring of small to medium-sized generators. As a key component of the SR family, it provides advanced features such as generator stator differential protection and detailed diagnostic logging to minimize troubleshooting time. This unit features a draw-out construction, allowing for efficient maintenance and reduced system downtime.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComprehensive generator protection including stator differential, reverse power, overexcitation, and inadvertent energization.\u003c\/li\u003e\n\u003cli\u003eEnhanced display unit for improved local monitoring and setpoint management.\u003c\/li\u003e\n\u003cli\u003eSupports RTD and analog inputs for monitoring critical parameters like bearing temperature and vibration.\u003c\/li\u003e\n\u003cli\u003eIntegrated waveform capture, event recording, and data logging capabilities.\u003c\/li\u003e\n\u003cli\u003eCommunication support via RS232, RS485, and Modbus protocols.\u003c\/li\u003e\n\u003cli\u003eBuilt-in waveform simulation tools for setpoint verification.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrimary and backup protection for industrial power generation systems.\u003c\/li\u003e\n\u003cli\u003eSynchronization and protection management in cogeneration plants.\u003c\/li\u003e\n\u003cli\u003eCritical monitoring for high-demand industrial power environments.\u003c\/li\u003e\n\u003cli\u003eStator and bearing temperature monitoring for generator health diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSR489-CASE 489-P5-HI-A20-E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eGeneral Electric (GE Multilin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase Current Inputs\u003c\/td\u003e\n\u003ctd\u003e5 Amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Power\u003c\/td\u003e\n\u003ctd\u003e90-300 VDC \/ 70-265 VAC (48-62 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Outputs\u003c\/td\u003e\n\u003ctd\u003e4-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEFT Standard\u003c\/td\u003e\n\u003ctd\u003eIEEE\/ANSI C37.90.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpulse Voltage Withstand\u003c\/td\u003e\n\u003ctd\u003e5 kV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3rd Harmonic Timing Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 3.0 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the device is installed in a clean, dry environment protected from excessive vibration and extreme temperatures.\u003c\/li\u003e\n\u003cli\u003eVerify that the control power supply matches the 90-300 VDC or 70-265 VAC rating before energizing.\u003c\/li\u003e\n\u003cli\u003eUse shielded communication cables for RS485 connections to minimize EMI interference.\u003c\/li\u003e\n\u003cli\u003eThe unit utilizes a draw-out design; ensure the chassis is properly seated and locked to maintain electrical continuity.\u003c\/li\u003e\n\u003cli\u003eAlways power down the system before inserting or removing the relay module from the rack to prevent electrical arcing or damage to internal components.\u003c\/li\u003e\n\u003cli\u003eFollow standard ESD (Electrostatic Discharge) precautions when handling the module internals.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003ch3\u003eWhat is the 489-P5-HI-A20-E?\u003c\/h3\u003e\u003cp\u003eThe GE Multilin 489-P5-HI-A20-E is a microprocessor-based generator management relay designed for protecting, controlling, and monitoring small to medium-sized generators.\u003c\/p\u003e\u003ch3\u003eWhat is the function of the 489-P5-HI-A20-E?\u003c\/h3\u003e\u003cp\u003eIt offers complete generator protection, including stator thermal protection, bearing over-temperature monitoring, and negative sequence overcurrent for rotor protection.\u003c\/p\u003e\u003ch3\u003eHow do I view metered values?\u003c\/h3\u003e\u003cp\u003eMetered values (voltage, current, power) are available on the front panel display or via communication ports.\u003c\/p\u003e\u003ch3\u003eDoes the relay support 4-wire RS485?\u003c\/h3\u003e\u003cp\u003eNo, the 489-P5-HI-A20-E communicates only in 2-wire half-duplex mode.\u003c\/p\u003e\u003ch3\u003eWhat are the analog output ranges?\u003c\/h3\u003e\u003cp\u003eThe analog outputs are 4 to 20 mA.\u003c\/p\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":50879660622076,"sku":"SR489-CASE 489-P5-HI-A20-E","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_c61477e8-8c3e-4b11-a630-ee75ee657c33.jpg?v=1785584307","url":"https:\/\/www.electronicplc.com\/ar\/products\/general-electric-multilin-sr489-case-489-p5-hi-a20-e-generator-management-relay","provider":"Electronic PLC","version":"1.0","type":"link"}