Product Short Description
Product Introduction
The GE Multilin SR469-P1-HI-A20-E is a high-performance, industrial-grade digital motor management and protection relay designed for medium and large electric motors. It is part of GE’s Multilin 469 series, offering comprehensive protection, precise monitoring, advanced control, and seamless communication capabilities in a robust, draw-out construction. This unit safeguards motors against electrical faults, thermal stress, and abnormal operating conditions while enabling real-time diagnostics and system integration, making it ideal for critical industrial motor applications.
Description
Technical Specifications
Electrical Specifications
- Phase Current Input: P1 = 1 A (phase CT secondary current input)
- Control Power Supply: HI = 90–300 VDC / 70–265 VAC @ 48–62 Hz (wide-range universal power)
- Analog Output: A20 = 4–20 mA (standard analog output configuration)
- RTD Inputs: Supports multiple RTD types for motor winding and bearing temperature monitoring
- Digital Inputs: Multiple programmable digital inputs for remote control and status signaling
- Relay Outputs: Configurable relay outputs for tripping, alarming, and control functions
- Communication Ports: RS-485 (Modbus RTU), RS-232; supports optional Ethernet, Profibus, DNP3, and IEC 61850 protocols
Environmental & Physical Specifications
- Operating Temperature: -40°C to +60°C
- Storage Temperature: -40°C to +80°C
- Relative Humidity: Up to 95% (non-condensing) at 55°C
- Pollution Degree: 2
- Ingress Protection: IP40 (front panel) / IP20 (rear enclosure)
- Dimensions: 144 mm × 144 mm × 112 mm
- Weight: Approximately 10 kg
- Mounting: Panel-mount (draw-out construction)
- Coating: Conformal coating for harsh/chemical environments
- Certifications: UL, cUL, CE, IEC 61010-1 compliant
Key Features
- Comprehensive Motor Protection: Integrates thermal overload (with memory), stall, phase imbalance (negative sequence), ground fault, short-circuit, phase reversal, over/undervoltage, and RTD-based temperature protection.
- Customizable Protection Curves: Offers adjustable overload and thermal model curves to match specific motor characteristics.
- Single CT Differential Protection: Provides enhanced internal fault detection for motor windings.
- Advanced Monitoring & Metering: Measures three-phase current/voltage, active/reactive/apparent power, power factor, energy consumption, frequency, and thermal capacity utilization.
- Enhanced User Interface: Features a large, backlit LCD display for local parameter viewing, configuration, and fault diagnostics.
- Auto-Configuration Tool: Includes Motor Settings Auto-Configurator for simplified and rapid setup.
- Hot-Swappable Design: Draw-out construction allows module replacement without system shutdown.
- Event & Fault Recording: Logs detailed fault data, operational events, and waveform captures for troubleshooting.
- Flexible Communication: Supports multiple industrial protocols for seamless integration with SCADA, DCS, and PLC systems.
- Harsh Environment Resilience: Conformal coating and wide temperature range ensure reliable operation in demanding industrial settings.
Application Scenarios
- Oil & Gas Industry: Motor protection for pumps, compressors, and fans in refineries, drilling rigs, and pipeline systems.
- Power Generation: Protection of large motors in thermal, hydro, and renewable power plants.
- Petrochemical & Chemical Processing: Safe operation of motors in chemical manufacturing and processing facilities.
- Water & Wastewater: Motor management for pumps, blowers, and mixers in water treatment plants.
- Mining & Minerals: Protection of heavy-duty motors in mining conveyors, crushers, and mills.
- Manufacturing & Industrial Automation: Motor control for conveyors, extruders, and large machinery in factories.
- Marine & Offshore: Reliable motor protection in marine propulsion and offshore platform systems.
- Hazardous Locations: Suitable for Class I, Division 2 hazardous area applications.
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