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      Generator Management Relay

      SR489-RELAY

      Spare Part Number

      PN489-P5-LO-A20 SR489-P5-LO-A20

      Product Information:

      a state-of-the-art generator management relay 
      designed to provide unparalleled protection and 
      monitoring capabilities for industrial applications
      Its robust design ensures reliable 
      performance even in harsh environments
      making it an ideal choice for power generation facilities
      • One-year warranty
      • Global shipping
      • Exact-model verification
      WhatsApp: +86 180 2077 6792 Email parts team
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      Technical specifications for

      SR489-RELAY

      0 TECHNICAL PARAMETERS
      • Manufacturer:
        General Electric
      • Product Category:
        General Automation
      • Spare Part Number:
        489-P5-LO-A20 SR489-P5-LO-A20
      • Estimated shipping dimensions:
        17.7x18x23.2cm
      • Weight:
        4.92 kg
      • Tariff Code:
        8537101190
      • Country of origin:
        USA
      • Place of shipment:
        Xiamen, Fujian, China
      • Product type:
        489 Generator Management Relay
      • Current Input Relays:
        P5 = 5 A phase CT secondaries
      • Power Supply Options:
        LO = DC: 24 – 60 V; AC: 20 – 48 V @ 48 – 62 Hz
      • Analogue Outputs:
        A20 = 4 – 20 mA analog outputs
      • Series:
        GE Multilin
      • Stock Availability:
        40
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      BUYER INFORMATION

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      • 03

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      Alternative Names

      489P5LOA20SR489P5LOA20 489 P5 LO A20 SR489 P5 LO A20
      PRODUCT & ORDER FAQS

      Questions buyers ask about SR489-RELAY

      • What core protection philosophy governs the operational paradigm of the SR489-RELAY?

        The SR489-RELAY is predicated on a microprocessor-based motor protection philosophy, integrating thermal modeling and real-time current analysis to safeguard rotating machinery against overload, phase imbalance, and fault conditions.

      • How does the SR489-RELAY algorithmically synthesize thermal capacity utilization for motor protection?

        The SR489-RELAY employs a dynamic thermal model that continuously computes the motor’s thermal state based on current magnitude and duration, thereby enabling precise trip decisions and preventing insulation degradation.

      • Why is the SR489-RELAY regarded as a critical component in motor management systems?

        The SR489-RELAY functions as an intelligent protection and control node, ensuring operational continuity by mitigating risks such as overheating, locked rotor conditions, and phase loss, which are prevalent in industrial motor applications.

      • What electrical input parameters and sensing capabilities characterize the SR489-RELAY?

        The SR489-RELAY supports multi-phase current sensing through current transformers (CTs), along with optional voltage inputs, enabling comprehensive monitoring of motor electrical behavior.

      • How does the SR489-RELAY differentiate between transient anomalies and sustained fault conditions?

        The SR489-RELAY integrates time-current characteristic curves and programmable delay thresholds, allowing it to distinguish between permissible transient events (e.g., motor startup) and hazardous sustained faults.

      • What protective functions are inherently embedded within the SR489-RELAY?

        The SR489-RELAY encompasses a wide array of protection features, including overload protection, phase unbalance detection, ground fault monitoring, stall protection, and undercurrent supervision.

      • How does the SR489-RELAY facilitate communication and system integration within modern automation frameworks?

        The SR489-RELAY supports industrial communication protocols (such as Modbus), enabling seamless integration with supervisory control and data acquisition (SCADA) systems for real-time monitoring and control.
      All FAQ
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          Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.

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