469-P5-HI-A20-T-H GE

The GE 469-P5-HI-A20-T-H is a Multilin 469 Motor Management Relay. It’s designed for comprehensive protection, control, and monitoring of medium to large industrial motors in harsh environments. This specific model features 5 A phase CT secondaries, high-range control power (90-300 VDC or 70-265 VAC), four 4-20 mA analog outputs, an enhanced front panel display, an Ethernet (10Base-T) port, and crucially, harsh (chemical) environment conformal coating. The “P5” suffix indicates the 5A CT input, “T” denotes the Ethernet port, and “H” signifies the conformal coating.

Product Overview

The GE Multilin 469-P5-HI-A20-T-H is an advanced Motor Management Relay from GE’s highly regarded Multilin 469 series. This microprocessor-based relay is expertly engineered to deliver robust protection, precise control, and extensive monitoring functionalities for medium to large horsepower three-phase motors. It is a vital asset in a diverse range of industrial and utility applications where reliable motor operation is paramount. What significantly distinguishes the 469-P5-HI-A20-T-H is its harsh (chemical) environment conformal coating (indicated by the “-H” suffix) on its internal circuit boards, providing exceptional resilience against dust, moisture, and corrosive chemicals. This makes it ideal for deployment in demanding and hazardous industrial settings.

Beyond its environmental ruggedness, the 469-P5-HI-A20-T-H integrates an Ethernet (10Base-T) port (denoted by “T”), enabling high-speed network integration into modern industrial control systems for remote configuration, monitoring, and data acquisition. The “P5” in the model number signifies its compatibility with 5 A phase Current Transformer (CT) secondaries, making it suitable for motor applications where 5A CTs are standard. The “HI” indicates its wide control power range (90-300 VDC or 70-265 VAC), offering adaptability across various electrical systems. The “A20” specifies its four 4-20 mA analog outputs, useful for integrating with external control and SCADA systems, while “E” refers to an enhanced front panel display with a larger LCD and improved menu navigation for intuitive user interaction. This relay plays a critical role in minimizing motor downtime, extending asset lifespan, and improving overall operational efficiency and safety.

Technical Specifications

Parameter Name	Parameter Value
Product Model	469-P5-HI-A20-T-H
Manufacturer	GE Multilin (GE Vernova)
Product Type	Motor Management Relay / Motor Protection System
Phase Current Inputs	P5 = 5 A phase CT secondaries
Control Power	HI = DC: 90 – 300 VDC; AC: 70 – 265 VAC @ 48-62 Hz
Analog Outputs	A20 = Four (4) 4-20 mA analog outputs
Digital Inputs	9 opto-isolated inputs
Display	E = Enhanced display, larger LCD
Special Features	T = Ethernet (10Base-T) port
	H = Harsh (chemical) environment conformal coating
Communication Ports	RS232, RS485 (Modbus RTU/Half Duplex), Ethernet (10Base-T)
Operating Temperature	-40°C to +60°C
Storage Temperature	-40°C to +80°C
Humidity	Up to 95% relative humidity (non-condensing) @ 55°C
Protection Class	IP40 (front), IP20 (back)
Enclosure	Draw-out case construction
Certifications	TÜV Rheinland (for certain safety functions)

Main Features and Advantages

The GE Multilin 469-P5-HI-A20-T-H Motor Management Relay offers a comprehensive set of features and distinct advantages, particularly for critical motor applications in challenging and networked industrial environments.

Enhanced Environmental Protection

The defining feature of the 469-P5-HI-A20-T-H is its harsh (chemical) environment conformal coating (indicated by the “-H” suffix). This robust polymeric layer provides superior protection for the relay’s internal circuitry against dust, moisture, corrosive gases, and extreme temperatures. This significantly extends the relay’s lifespan and ensures reliable operation in the most demanding industrial environments, such as chemical processing plants, mining sites, or coastal installations, where other relays might prematurely fail.

Comprehensive Motor Protection

This relay provides an exhaustive suite of motor protection functions, including highly accurate thermal overload protection with a sophisticated thermal model that considers cooling time constants and hot/cold safe stall ratios. It also offers protection against common faults like phase and ground overcurrents, current unbalance, phase differential protection, under/over voltage, frequency deviations, and overtemperature via RTD inputs. A key diagnostic feature is Motor Current Signature Analysis (MCSA) for broken rotor bar detection, enabling predictive maintenance and preventing costly unplanned downtime.

Integrated Ethernet Communication

The inclusion of an Ethernet (10Base-T) port (indicated by “T”) allows for high-speed, reliable communication with plant-wide control systems (SCADA, DCS) using protocols like Modbus TCP/IP. This enables remote configuration, monitoring, and data acquisition, significantly enhancing operational visibility and efficiency, especially in large or geographically dispersed facilities.

Advanced Monitoring and Diagnostics

The 469-P5-HI-A20-T-H delivers extensive metering capabilities, providing precise, real-time measurements of electrical parameters such as phase, differential, and ground currents, voltages, power (real, reactive, apparent), power factor, and RTD temperatures. It includes an event recorder (storing up to 256 events) and oscillography (waveform capture), which are invaluable tools for detailed post-fault analysis and troubleshooting, thereby reducing maintenance time and costs.

Adaptable CT Input and User-Friendly Design

The P5 designation means it’s configured for 5 A phase CT secondaries, making it suitable for a common range of industrial current transformers. Its draw-out case construction allows for easy installation, testing, and replacement without disturbing field wiring, minimizing system downtime. The enhanced front panel (indicated by “E”) features a larger LCD display and improved menu navigation, providing clear, intuitive access to vital information and settings for operators.

Application Field

The GE Multilin 469-P5-HI-A20-T-H Motor Management Relay is a vital component in heavy industries and critical infrastructure where the reliable and efficient operation of medium to large horsepower motors is paramount, particularly in harsh environmental conditions and where advanced networking capabilities are desired.

In the Mining and Metals Industry, where dust, moisture, abrasive particles, and sometimes corrosive substances are prevalent, the 469-P5-HI-A20-T-H provides robust protection for motors driving conveyors, crushers, grinding mills, and heavy machinery. Its conformal coating ensures long-term reliability in these demanding conditions, while Ethernet enables centralized monitoring of critical assets.

For the Chemical and Petrochemical Industries, the conformal coating of the 469-P5-HI-A20-T-H is crucial for safeguarding the relay against corrosive fumes and accidental spills. It protects motors driving pumps, compressors, mixers, and reactors that handle volatile and corrosive materials, ensuring plant safety and process integrity.

In Oil and Gas operations, including refineries, pipelines, and offshore platforms, this relay protects critical motors for pumps, compressors, and fans in often hazardous or marine environments. The combination of environmental protection and Ethernet connectivity enhances operational safety and remote diagnostics for assets in vast or remote locations.

The Power Generation sector, including thermal, hydro, and nuclear power plants, utilizes the 469-P5-HI-A20-T-H for motors in auxiliary equipment such as boiler feed pumps, cooling tower fans, and coal pulverizers. Its resilience to environmental factors and network integration capabilities contribute to optimized plant performance and predictive maintenance strategies.

Additionally, it finds applications in Water and Wastewater Treatment plants, protecting motors exposed to high humidity and chemicals, and in large Pulp and Paper mills, where motors operate in challenging, high-humidity, and often dusty environments.

Related Products

The GE Multilin 469-P5-HI-A20-T-H operates within a broader ecosystem of GE Multilin protection and control devices and supporting infrastructure, forming comprehensive industrial automation solutions.

GE Multilin 869 Motor Protection Relay: This is the current generation motor protection relay by GE. It serves as an advanced replacement and upgrade path for the 469 series, offering enhanced features, expanded communication options, and cybersecurity improvements.
GE Multilin F35 Feeder Protection System: Used for protecting and managing the electrical feeders that supply power to the motor control centers where 469 relays are installed.
GE Multilin D30/D60 Substation Automation Systems: These are higher-level Intelligent Electronic Devices (IEDs) that aggregate data and control capabilities from multiple relays, including the 469-P5-HI-A20-T-H, for comprehensive substation management and wide-area control.
Current Transformers (CTs): Essential external devices that provide scaled current inputs (specifically 5A secondary for the P5 variant) to the 469-P5-HI-A20-T-H for accurate current measurement and protection.
Potential Transformers (PTs): Used to provide scaled voltage inputs to the relay for voltage-related protection functions.
RTD Sensors: Resistance Temperature Detectors (e.g., Pt100, Ni100) are connected to the relay’s RTD inputs to monitor motor winding, bearing, or ambient temperatures.
Industrial Ethernet Switches: Used to connect the 469-P5-HI-A20-T-H to the plant’s Ethernet network, facilitating communication with SCADA/DCS systems.
EnerVista™ Software Suite: GE’s proprietary software platform used for the configuration, monitoring, and analysis of data from Multilin relays, including the 469-P5-HI-A20-T-H. This software simplifies setup and allows for detailed post-fault analysis.

Installation and Maintenance

Pre-installation preparation:

Before installing the GE Multilin 469-P5-HI-A20-T-H Motor Management Relay, ensure all associated power circuits are de-energized and properly locked out/tagged out to prevent accidental energization. Verify that the current transformers (CTs) connected to the “P5” inputs have 5 A secondaries to match the relay’s specifications. Confirm that the control power source (90-300 VDC or 70-265 VAC) is compatible with the “HI” option of the relay. Conduct a thorough visual inspection of the 469-P5-HI-A20-T-H for any physical damage. Ensure the mounting location in the panel or switchgear provides adequate space for ventilation and easy access for wiring connections, particularly for the Ethernet cable. Adhere strictly to all local electrical codes, safety regulations, and the detailed instructions provided in the GE Multilin 469 Instruction Manual for proper wiring and panel cutout dimensions.

Maintenance recommendations:

Regular maintenance of the GE Multilin 469-P5-HI-A20-T-H is crucial for its continuous and reliable operation. Periodically perform visual inspections to check for dust accumulation, loose wiring connections (especially for power, CTs, and Ethernet), or any signs of discoloration that might indicate overheating. Despite the conformal coating, cleaning external surfaces to prevent buildup of corrosive agents is recommended. The draw-out construction facilitates easy removal for testing and replacement without disconnecting field wiring, minimizing maintenance time. Utilize the relay’s built-in diagnostics and the EnerVista™ software to regularly monitor motor health parameters, event logs, and oscillography records. This data is invaluable for predictive maintenance, allowing for early detection of potential motor or process issues. Periodically verify the accuracy of CT and PT inputs and test the relay’s trip functions using a protection test set as per the recommended maintenance schedule. For units connected via Ethernet, routinely check network connectivity and ensure firmware is up-to-date. Refer to the official GE Multilin 469 Instruction Manual for detailed testing procedures, firmware update instructions, and specific troubleshooting guidelines to ensure the optimal performance and longevity of the 469-P5-HI-A20-T-H.