{"product_id":"ge-sr489-p5-hi-a20-e-management-relay-enhanced-display","title":"GE SR489-P5-HI-A20-E Management Relay Enhanced Display","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSR489-P5-HI-A20-E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(also known as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e489-P5-HI-A20-E\u003c\/strong\u003e) is an authoritative Generator Management Relay from the GE Multilin SR489 series. This module is a mechanical necessity for the advanced protection, monitoring, and control of medium to large synchronous generators. By integrating high-speed digital signal processing with a comprehensive protection suite—including differential, overcurrent, and loss of excitation logic—the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSR489-P5-HI-A20-E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eensures deterministic operation and equipment longevity. Featuring an enhanced LCD display for real-time field visibility and 4–20 mA analog outputs for seamless PLC\/DCS integration, this relay is a trustworthy standard in utility-scale power plants and heavy industrial co-generation facilities.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDetailed Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGE Multilin \/ General Electric\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSR489-P5-HI-A20\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOrdering Code\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e489-P5-HI-A20-E\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSR489 Generator Management System\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGenerator Protection and Control Relay\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePhase Current Inputs (P5)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5 A Phase CT Secondaries\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eControl Power (HI)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHigh Range: 90–300 VDC or 70–265 VAC (48–62 Hz)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAnalog Outputs (A20)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 Isolated 4–20 mA Analog Outputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDisplay Type (E)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eEnhanced Display (Larger LCD for better visibility)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePrimary Function\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eProtection for synchronous generators and prime movers\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS485, RS232, Modbus RTU, DNP 3.0 (Ethernet optional)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40 °C to +70 °C (-40 °F to 158 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12 kg (Full assembly and packaging)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCE, UL, IEC compliance\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eEngineering and Operational Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSynchronous Protection Expertise\u003c\/strong\u003e: The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSR489-P5-HI-A20-E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eexcels at detecting complex generator faults. Its expertise in reverse power, over\/under excitation (loss of field), and frequency monitoring prevents mechanical damage to the turbine-generator shaft and electrical damage to the windings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDeterministic Signal Logic\u003c\/strong\u003e: A trustworthy feature of this relay is its 100% stator ground fault protection (using third harmonic neutral undervoltage logic). This ensures that even faults occurring near the generator neutral are detected before they evolve into catastrophic phase-to-phase failures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAuthoritative Diagnostics\u003c\/strong\u003e: Integrated hardware supports high-resolution oscillography and event recording. In the event of a trip, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e489-P5-HI-A20-E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecaptures waveform data that allows protection engineers to conduct root cause analysis and distinguish between genuine faults and system transients.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Visibility\u003c\/strong\u003e: The \"E\" version includes an enhanced LCD interface. This authoritative display provides clear, multi-line navigation for local metering of volts, amps, watts, vars, and frequency, facilitating rapid onsite commissioning and maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical FAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between the P1 and P5 current input options?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eP5\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edesignation in the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSR489-P5-HI-A20-E\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eindicates the relay is hardware-configured for 5A CT secondaries. If your field CTs provide a 1A output, you must use the P1 model. Professional best practice dictates matching the relay hardware to the CT ratio to ensure metering accuracy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the 4-20 mA analog outputs be used for control?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eA20\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoption provides four programmable 4–20 mA outputs. These are typically mapped to parameters like generator MW or MVAR to provide real-time feedback to a PLC or DCS for automated load management or governor control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the SR489-P5-HI-A20-E suitable for high-vibration environments?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The SR489 series is designed for industrial grade durability. However, it is an engineering requirement to ensure the relay is mounted in a standard 19-inch rack or panel cutout that meets the vibration specifications of the turbine hall.\u003c\/p\u003e","brand":"GE Fanuc","offers":[{"title":"Default Title","offer_id":44071757545571,"sku":"SR489-P5-HI-A20","price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/365._888a63c7-3bec-4a00-b61a-8702a76a7e80.jpg?v=1773999374","url":"https:\/\/www.autocontrolglobal.com\/products\/ge-sr489-p5-hi-a20-e-management-relay-enhanced-display","provider":"AutoControl Global","version":"1.0","type":"link"}