Description
GE Multilin SR469-P5-H-A20-T Product Description
Product Overview
GE Multilin SR469-P5-H-A20-T is a microprocessor-based motor management and protection relay designed for medium-voltage and large industrial motor applications. As a member of the GE Multilin 469 Motor Protection System family, GE Multilin SR469-P5-H-A20-T integrates advanced motor protection, control, monitoring, measurement, and communication functions into a compact draw-out relay platform. It is specifically engineered to protect critical motors used in power plants, manufacturing facilities, oil and gas installations, and process industries where motor reliability and availability are essential.
The GE Multilin SR469-P5-H-A20-T provides comprehensive electrical and thermal protection functions, including overload protection, phase current monitoring, ground fault protection, voltage protection, motor starting supervision, RTD temperature monitoring, and motor condition diagnostics. The “P5” configuration indicates 5 A phase current transformer inputs, while the “H” control power option supports high-range auxiliary power input. The “A20” option includes advanced analog functionality, and the “T” suffix provides Ethernet communication capability for integration into modern industrial networks.
Designed for demanding industrial environments, GE Multilin SR469-P5-H-A20-T combines protection relay technology with intelligent motor management functions. It supports communication with PLC, DCS, SCADA, and plant asset management systems through Ethernet and serial communication networks, allowing operators to improve equipment diagnostics, optimize maintenance schedules, and reduce unexpected motor failures.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | SR469-P5-H-A20-T |
| Manufacturer | GE Multilin (GE Vernova) |
| Product Series | Multilin 469 Motor Protection System |
| Product Type | Intelligent Motor Management Relay |
| Main Function | Motor protection, monitoring and control |
| Application | Medium-voltage and large industrial motors |
| Phase CT Input | 5 A secondary current input |
| Control Power Supply | 90–300 VDC / 70–265 VAC, 48–62 Hz |
| Analog Inputs | Four 4–20 mA analog inputs |
| Communication Interface | Ethernet 10Base-T |
| Serial Communication | RS485 interface |
| Communication Protocols | Modbus RTU / Modbus TCP/IP |
| Protection Functions | Overload, overcurrent, ground fault, voltage protection |
| Temperature Monitoring | Up to 12 RTD inputs |
| Display Type | Front-panel LCD operator interface |
| Installation Type | Draw-out panel mounting |
| Operating Temperature | -40°C to +60°C |
Main Features and Advantages
Comprehensive motor protection functions:
GE Multilin SR469-P5-H-A20-T provides a complete protection solution for medium and high-power motors. It combines electrical protection, thermal modeling, mechanical condition monitoring, and control functions in a single device. The relay continuously evaluates motor operating parameters and responds quickly to abnormal conditions such as overload, phase imbalance, locked rotor, excessive starting current, and insulation-related problems.
SR469-P5-H-A20-T
Advanced thermal overload protection:
A major advantage of GE Multilin SR469-P5-H-A20-T is its sophisticated motor thermal model. Unlike traditional overload devices that only monitor current, this relay calculates motor thermal capacity based on operating history, starting cycles, load conditions, and cooling characteristics. This helps prevent unnecessary trips while ensuring effective motor protection.
High-accuracy measurement and diagnostics:
GE Multilin SR469-P5-H-A20-T provides real-time measurement of current, voltage, power, energy, power factor, frequency, torque-related parameters, and motor operating conditions. The integrated diagnostic functions help maintenance teams identify developing faults before they result in unexpected equipment shutdowns.
Flexible communication capability:
The Ethernet-enabled design of GE Multilin SR469-P5-H-A20-T allows seamless integration into industrial automation networks. Through Ethernet communication, operators can access motor status information, alarms, event records, and diagnostic data from centralized monitoring systems.
Enhanced motor condition monitoring:
GE Multilin SR469-P5-H-A20-T supports RTD temperature inputs and advanced diagnostic functions, enabling continuous monitoring of motor winding and bearing temperatures. This improves predictive maintenance capability and helps extend motor service life.
Reliable industrial design:
Built for critical industrial applications, GE Multilin SR469-P5-H-A20-T features a rugged draw-out construction that simplifies installation, testing, and replacement. Its modular design reduces maintenance time and improves system availability.
Application Areas
GE Multilin SR469-P5-H-A20-T is widely used in industrial facilities where reliable protection and management of medium-voltage motors are required.
In power generation plants, GE Multilin SR469-P5-H-A20-T is commonly applied to protect large motors driving pumps, fans, compressors, cooling systems, and auxiliary equipment. Its advanced protection functions help maintain stable operation of critical power generation processes.
In oil and gas facilities, GE Multilin SR469-P5-H-A20-T provides protection for motors used in compressor stations, centrifugal pumps, drilling equipment, and process machinery. Continuous monitoring helps reduce the risk of production interruptions caused by motor failures.
In petrochemical and chemical processing industries, GE Multilin SR469-P5-H-A20-T supports reliable operation of motors exposed to heavy loads and demanding operating cycles. The relay helps protect expensive motors against thermal stress, electrical faults, and abnormal operating conditions.
In mining, metallurgy, water treatment, and manufacturing plants, GE Multilin SR469-P5-H-A20-T provides intelligent motor management for conveyors, crushers, pumps, blowers, and other high-power rotating equipment.
The relay is also suitable for retrofit projects where existing GE Multilin 469 protection systems require replacement, expansion, or integration into modern Ethernet-based automation networks.
Related Products
- GE Multilin 469-P5-HI-A20-T: Equivalent 469 motor management relay variant with 5 A CT inputs, high control power, and Ethernet communication.
- GE Multilin SR469-P5-HI-A20-E: Enhanced display version of the 469 motor protection relay.
- GE Multilin SR469-P5-HI-A20-E-H: Harsh-environment version with conformal coating protection.
- GE Multilin SR469-P5-LO-A20-T: Low control power version with Ethernet communication.
- GE Multilin 869 Motor Protection System: Modern replacement platform for the legacy 469 series.
- GE Multilin 339 Motor Protection Relay: Compact motor protection relay for smaller industrial motors.
- GE Multilin 369 Motor Management Relay: Previous-generation motor protection product.
- GE Multilin 489 Generator Management Relay: Related protection relay family for generator applications.
