Description
The GE SR469-P5-HI-A20 is an advanced, digital motor protection and management relay from the Multilin 469 series. Designed to deliver comprehensive protection, monitoring, and control for medium to high-voltage horsepower motors, this microprocessor-based system safeguards critical assets against thermal overload, phase unbalance, stalled conditions, and ground faults. It integrates seamlessly into automated power and process control networks to prevent catastrophic motor failure and minimize operational downtime.
Product Specifications
Product Name: SR469-P5-HI-A20 Motor Management Relay Manufacturer: GE Multilin (General Electric) Current Input (Phase/Ground): 5 Amp Phase CTs / 5 Amp Ground CT Power Supply Range: High Voltage AC/DC (88V – 300V DC / 70V – 265V AC at 50/60 Hz) Analog Outputs: 4 Channels (0-20mA, 4-20mA configurable) Communication Interfaces: RS232, RS485, Modbus RTU Protocol Enclosure Rating: IP40 (Front Panel Panel Mount) Dimensions: Standard SR Drawout Case (Approx. 222 mm x 173 mm x 272 mm) Weight: Approximately 4.20 kg Country of Origin: Canada / USA
Application Areas
The SR469-P5-HI-A20 is engineered for a wide array of demanding large industrial motor applications. Typical operational environments include:
- Oil, gas, and petrochemical refining compressor motors
- Water treatment facility high-capacity pumping systems
- Mining and materials handling conveyors, mills, and crushers
- Power generation station boiler feed pumps and forced draft fans
- Pulp, paper, and chemical processing plant mixers and expanders
GE SR469-P5-HI-A20-E
GE SR469-P5-HI-A20-E
GE SR469-P5-HI-A20-E
GE SR469-P5-HI-A20-E
Product Operation Instructions
- Installation and Mounting: Install the drawout case assembly securely into the switchgear panel cutout. Ensure the panel cutout is clean and properly grounded before sliding the relay chassis completely into its housing.
- Wiring and CT Connections: Connect the 5A phase and 5A ground current transformers to their specified terminal blocks at the back of the relay. Ensure correct phase rotation polarity according to the plant electrical schematics.
- Power Connection: Apply control power within the allowed high-voltage spectrum (88V-300V DC or 70V-265V AC) to the specified power terminals to initiate the module boot sequence.
- Setpoint Programming: Connect a PC via the front RS232 port or network via RS485 using EnerVista 469 Setup software. Enter the motor nameplate parameters, thermal model data, protection settings, and output relay configurations before putting the motor into service.
Frequently Asked Questions (Q&A)
Q: What does the “P5” portion of the product code indicate? A: The “P5” code specifies that the relay is equipped with 5 Amp Phase current transformer inputs, as well as a 5 Amp Ground current transformer input for fault monitoring.
Q: What power supply option does the “HI” model configuration support? A: The “HI” designation signifies a high-voltage power supply capability, allowing the unit to operate reliably on either 88V to 300V DC or 70V to 265V AC control power lines.
Q: Does this relay offer real-time data communication? A: Yes, it features multiple serial communication ports supporting standard Modbus RTU protocols, enabling continuous data telemetry, event logs, and status updates to a central SCADA or DCS network.
Q: Is the SR469-P5-HI-A20 relay hot-swappable during maintenance? A: The unit features a specialized drawout design that allows the internal relay chassis to be safely removed from its outer case without disturbing the rear terminal block field wiring.
Q: What happens if an internal relay malfunction is detected? A: The SR469 features continuous automated self-diagnostics. If an internal hardware or software fault is uncovered, the dedicated self-test warning LED on the front panel illuminates and a diagnostic alarm contact drops out to alert operators.
