Description

The GE SR469-P5-HI-A20-E is a high-integrity multifunction motor protection relay engineered by General Electric for critical industrial automation systems. As part of GE’s flagship SR-469 series, this fifth-generation device combines advanced motor management with SIL 2/3 safety certification, adhering to IEC 61508/61511 standards. It provides comprehensive protection against overloads, phase imbalances, ground faults, and locked rotor conditions while enabling real-time monitoring of current (up to 20A direct input), voltage, power, and thermal capacity via optional RTDs. The GE SR469-P5-HI-A20-E integrates seamlessly into DCS and PLC architectures through dual Ethernet ports supporting IEC 61850, Modbus TCP, and SRTP protocols, alongside RS-485 for legacy systems.

Designed for mission-critical environments, this relay features 16 digital inputs, 10 configurable relay outputs, and programmable safety functions like Safe Torque Off (STO). Its “-HI” suffix denotes high-integrity design, making the GE SR469-P5-HI-A20-E indispensable for applications demanding fail-safe operation. The “-A20” rating ensures compatibility with high-current motors, while the “-E” variant includes region-specific certifications for European markets. By minimizing unplanned downtime and enhancing operational safety, the GE SR469-P5-HI-A20-E delivers lifecycle cost savings exceeding 30% in hazardous industries.

GE SR469-P5-HI-A20-E

Technical Specifications

Parameter Name	Parameter Value
Product Model	GE SR469-P5-HI-A20-E
Manufacturer	General Electric (GE)
Product Type	Multifunction Motor Protection Relay
Rated Current	20A (continuous)
Safety Certification	SIL 2/3 (IEC 61508/61511)
Communication Protocols	Dual Ethernet (IEC 61850, Modbus TCP, SRTP), RS-485 (Modbus RTU)
Digital Inputs	16 (24-250V DC/AC)
Relay Outputs	10 (5A @ 250V AC)
Analog Inputs	8 (for RTDs/transducers)
Operating Temperature	-40°C to +70°C
Enclosure Rating	IP52 (standard)
Power Supply	24-250V DC/AC (±20%)
Dimensions	144 x 144 x 155 mm

Main Features and Advantages

The GE SR469-P5-HI-A20-E excels with its dual-layer protection philosophy: electrical fault prevention and functional safety integration. Its dynamic thermal modeling continuously calculates motor thermal capacity, adapting to start/stop cycles to prevent insulation degradation. For safety-critical systems, the relay’s SIL 3-certified logic solvers execute sub-100ms responses for STO commands, isolating torque within safety circuits. High-speed sampling (128 samples/cycle) enables precise detection of asymmetrical faults or undercurrent conditions often missed by conventional relays.

Enhanced diagnostics: The embedded web server provides real-time oscillography and event logs, while programmable LEDs offer at-a-glance fault identification. The GE SR469-P5-HI-A20-E supports IEC 62443 cybersecurity protocols, including role-based access and encrypted communications. Compared to predecessors, its P5 hardware reduces calibration drift by 60% through gold-plated connectors and vibration-resistant components. For integration flexibility, GE’s EnerVista software allows drag-and-drop configuration of protection curves without coding. These features collectively extend motor lifespan by up to 40% in abrasive environments like mining.

Application Field

The GE SR469-P5-HI-A20-E dominates high-risk sectors where motor failure incurs catastrophic consequences. In oil/gas upstream operations, it safeguards subsea pumps and gas compressors against explosive atmospheres, leveraging SIL 3 compliance to meet API 670 safety instrumented system (SIS) requirements. For power generation, the relay protects boiler feed pumps and ID/FD fans, with its 20A rating handling turbine auxiliaries without external transducers. Mining deployments utilize its IP52-rated housing for conveyor motor protection in dusty pit environments, preventing belt fires caused by jammed rollers.

Chemical processing plants rely on the GE SR469-P5-HI-A20-E for agitator and reactor motor safety, where phase imbalance detection avoids costly batch spoilage. In water treatment, the relay’s corrosion-resistant terminals withstand chlorine exposure while monitoring pump cavitation via undercurrent algorithms. Notably, European manufacturing facilities adopt the “-E” variant for compliance with ATEX Directive 2014/34/EU. Across these sectors, the GE SR469-P5-HI-A20-E reduces safety validation time by 70% through pre-certified SIL validation kits.

GE SR469-P5-HI-A20-E

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