Product Short Description
Product Introduction
The GE Multilin SR489-P5-HI-A20-E is a high‑performance, industrial‑grade digital generator management and protection relay from GE’s Multilin 489 seriesGE Vernova. It is purpose‑built for the comprehensive protection, monitoring, control, and diagnostics of small‑to‑medium‑sized synchronous and induction generators (typically 0.5MW to 30MW) operating at 25, 50, or 60 Hz. This model features a 5A phase CT secondary input, a universal high‑voltage control power supply, four configurable 4–20 mA analog outputs, and an enhanced front‑panel display (denoted by the “‑E” suffix) with a larger LCD for improved local visibility and operation. It integrates advanced generator‑specific protection algorithms, precise metering, flexible I/O, and robust communication capabilities, making it ideal for primary or backup generator protection in demanding industrial and power generation environmentsGE Vernova.
Description
Technical Specifications
Electrical Specifications
- Phase Current Input: P5 = 5 A (5 A phase CT secondary current input)
- Control Power Supply: HI = 90–300 VDC / 70–265 VAC @ 48–62 Hz (universal wide‑range high‑voltage power)
- Analog Outputs: A20 = 4 × 4–20 mA configurable analog outputs
- RTD Inputs: 12 channels supporting Pt100, Pt1000, Cu10, and Ni100 RTD types for generator winding, bearing, and coolant temperature monitoringGE Vernova
- Analog Inputs: 4 × 4–20 mA configurable analog inputs for external sensor integration (vibration, speed, process variables)GE Vernova
- Digital Inputs: 9 opto‑isolated, programmable digital inputs for remote control, status signaling, and breaker position feedback
- Relay Outputs: 6 configurable Form A/C relay outputs for tripping, alarming, control, and signaling functionsGE Vernova
- Communication Ports: Ethernet (Modbus TCP/IP, DNP3 over TCP/IP), RS‑485 (Modbus RTU), RS‑232; supports optional Profibus and IEC 61850 protocols
- Measurement Accuracy: Current/voltage ±0.2% FS; power ±0.5% FSGE Vernova
- Relay Operating Time: ≤10 ms for output relaysGE Vernova
- Impulse Voltage Withstand: 5 kV
- Frequency Range: 40–70 Hz (adjustable)
Environmental & Physical Specifications
- Operating Temperature: -40°C to +70°C
- Storage Temperature: -40°C to +85°CGE Vernova
- Relative Humidity: Up to 95% (non‑condensing) at 55°CGE Vernova
- Pollution Degree: 2GE Vernova
- Ingress Protection: IP40 (front panel) / IP20 (rear enclosure)
- Dimensions: 144 mm × 144 mm × 112 mmGE Vernova
- Weight: Approximately 4.8 kgGE Vernova
- Mounting: Panel‑mount with draw‑out chassis designGE Vernova
- Certifications: UL, cUL, CE, IEC 61010‑1 compliantGE Vernova
Key Features
- Comprehensive Generator Protection: Delivers full protection including stator differential, 100% stator ground fault, thermal overload, over/undercurrent, phase imbalance, over/undervoltage, frequency deviation, reverse power (anti‑motoring), loss‑of‑excitation, overexcitation, and RTD‑based temperature protection.
- Advanced Thermal Modeling: Implements precise generator thermal capacity tracking with configurable cooling time constants and thermal memoryGE Vernova.
- Generator‑Specific Algorithms: Includes specialized protection for stator winding faults, rotor earth faults, and abnormal operating conditions unique to generatorsGE Vernova.
- Enhanced Monitoring & Metering: Provides real‑time measurement of three‑phase current/voltage, active/reactive/apparent power, power factor, energy consumption, frequency, and demand valuesGE Vernova.
- Vibration & Speed Monitoring: Supports 4 analog transducer inputs for vibration and speed monitoring, enabling early detection of mechanical issuesGE Vernova.
- Enhanced User Interface: Features a larger, enhanced LCD display with backlighting and a keypad for intuitive local configuration, parameter viewing, and fault diagnostics.
- Event & Fault Recording: Logs 256 time‑stamped events, detailed fault data, and waveform captures for rapid troubleshooting and analysisGE Vernova.
- Draw‑Out & Hot‑Swappable Design: Allows module replacement without system shutdown, minimizing downtime during maintenanceGE Vernova.
- Flexible Communication: Supports multiple industrial protocols for seamless integration with PLCs, DCS, SCADA, and power management systems.
- Harsh Environment Resilience: Operates reliably in extreme temperatures and industrial environments with high humidity and vibrationGE Vernova.
- Self‑Diagnostics: Built‑in self‑monitoring and fault detection ensures continuous operational integrityGE Vernova.
- EnerVista Software Compatibility: Configurable and monitored via GE’s EnerVista 489 Setup Software for easy setup and remote management.
Application Scenarios
- Power Generation: Primary and backup protection for small‑to‑medium‑sized synchronous and induction generators in thermal, hydro, and renewable power plantsGE Vernova.
- Cogeneration & Combined Heat & Power (CHP): Reliable generator management in industrial cogeneration facilitiesGE Vernova.
- Oil & Gas Industry: Generator protection for onshore and offshore drilling rigs, production platforms, and remote pumping stationsGE Vernova.
- Mining & Minerals: Protection of generator sets in mining operations and material processing facilitiesGE Vernova.
- Manufacturing & Industrial Facilities: Backup power generator management in factories, refineries, and chemical plantsGE Vernova.
- Water & Wastewater: Generator protection for critical pump stations and treatment facilitiesGE Vernova.
- Marine & Offshore: Generator management for marine vessels and offshore support platformsGE Vernova.
- Data Centers: Backup generator protection for mission‑critical data center power systemsGE Vernova.
- Commercial Buildings: Generator management for large commercial facilities and hospitalsGE Vernova.
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