Description
469-P5-HI-A20: Product Overview
The GE 469-P5-HI-A20 is a microprocessor-based motor management relay from GE’s Multilin 469 series, designed for critical motor applications in industrial environments. It combines protection, monitoring, and communication functions into a single, cost-effective device, making it ideal for medium to large motors (e.g., pumps, compressors, conveyors) in sectors like oil & gas, chemical processing, mining, and power generation.
Role in Automation Systems:
Positioned as a “motor asset guardian” in industrial automation architectures, the 469-P5-HI-A20 performs three primary functions:
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Protection: Detects and mitigates motor faults (e.g., overloads, phase loss, ground faults) to prevent damage and downtime.
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Monitoring: Continuously measures electrical parameters (current, voltage, power) and temperature (via RTDs) to provide real-time insights into motor health.
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Control: Enables remote configuration and integration with SCADA/DCS systems via communication interfaces, allowing centralized management of motor operations.
Core Functionality:
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Thermal Overload Protection: Uses advanced thermal modeling (with RTD inputs) to simulate motor winding temperature, preventing overheating and insulation failure.
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Fault Diagnostics: Records event history (e.g., fault type, timestamp) and captures waveforms for post-fault analysis, reducing troubleshooting time.
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Flexible Communication: Supports Modbus RTU (RS485) and optional Modbus TCP/IP (Ethernet) for integration with modern control systems. The T suffix indicates an onboard Ethernet port for high-speed network connectivity.
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Rugged Design: Built with industrial-grade components and optional conformal coating (H suffix) to withstand harsh environments (e.g., dust, moisture, corrosive chemicals).
Platform Benefits (Multilin 469 Series):
The 469-P5-HI-A20 inherits the Multilin 469 series’ strengths, including:
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Reliability: Proven track record of 24/7 operation in critical industrial applications.
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Legacy Compatibility: Works with existing Multilin 469 components (e.g., CTs, PTs) to reduce upgrade costs.
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Scalability: Supports expansion with additional I/O modules or communication cards to accommodate growing system demands.
GE 469-P5-HI-A20
Technical Specifications
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Model Number: 469-P5-HI-A20 (Base model); variants include -T (Ethernet), -H (Conformal Coating), -E (Enhanced Display)
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Manufacturer: GE (General Electric)
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Product Type: Motor Management Relay
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Series: Multilin 469 (Motor Protection)
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CT Input: 5A phase CT secondaries (P5 configuration)
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Control Power: 90–300 V DC, 70–265 V AC (48–62 Hz)
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Analog Outputs: Four 4–20 mA isolated outputs (A20 configuration)
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RTD Inputs: 3-wire RTDs (100Ω Nickel, 120Ω Nickel, 10Ω Copper, 100Ω Platinum)
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Communication: RS232 (front), RS485 (rear, Modbus RTU), optional Ethernet (10Base-T, T suffix)
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Operating Temperature: -40°C to +70°C (with conformal coating for harsh environments)
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Storage Temperature: -40°C to +80°C
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Humidity: Up to 95% non-condensing
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Weight: ~1.3 kg (2.3 kg shipping)
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Certifications: CE, UL, CSA (inferred from GE industrial product standards)
Core Features & Customer Value
1. Comprehensive Motor Protection:
The 469-P5-HI-A20 protects motors from common faults (overloads, phase loss, ground faults) using advanced algorithms. For example, in an oil refinery, the relay can detect a phase loss in a pump motor and trigger an alarm, preventing damage to the pump and downstream equipment.
2. Real-Time Temperature Monitoring:
With multiple RTD inputs, the relay monitors motor winding and bearing temperatures in real time. This helps prevent overheating (a leading cause of motor failure) and extends motor lifespan. For instance, in a chemical plant, the relay can alert operators to a rising bearing temperature before it causes a breakdown.
3. Flexible Communication:
The relay’s support for Modbus RTU/TCP/IP allows integration with SCADA/DCS systems, enabling remote monitoring and control. This reduces the need for on-site visits and improves operational efficiency. For example, in a power plant, operators can monitor motor status from a central control room and adjust settings remotely.
4. Rugged Design for Harsh Environments:
The optional conformal coating (H suffix) protects the relay’s internal components from dust, moisture, and corrosive chemicals. This makes it suitable for use in harsh environments like mining sites or offshore platforms, where reliability is critical.
GE 469-P5-HI-A20
Typical Applications
The GE 469-P5-HI-A20 is widely used in industrial automation systems for:
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Oil & Gas: Protects motors driving pumps, compressors, and valves in refineries and offshore platforms.
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Chemical Processing: Monitors motors in reactors, mixers, and centrifuges, ensuring safe and efficient operation in corrosive environments.
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Mining: Protects motors driving conveyors, crushers, and mills in dusty, high-vibration environments.
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Power Generation: Manages motors in auxiliary systems (e.g., boiler feed pumps, cooling tower fans) in thermal and nuclear power plants.
