GE Multilin SR469-P5-HI-A20-E Motor Management Relay

The GE Multilin SR469-P5-HI-A20-E serves as a high-performance solution for motor protection and control in industrial environments. This relay combines precise electrical monitoring with advanced diagnostics, ensuring optimal motor performance while minimizing downtime. Its modular design supports integration with SCADA systems and PLCs, making it suitable for applications like pump stations, conveyor systems, and compressors.

Technical Specifications

• Brand: GE Multilin
• Model: SR469-P5-HI-A20-E
• Input Voltage: 90–300 VDC / 70–265 VAC
• Analog Outputs: 4 channels
• Current Rating: 390/500 mA max
• Phase CT Inputs: 5A nominal
• Enclosure Rating: IP40 front / IP10 back
• Insulation Voltage: 300 V
• Delivery Time: 4–5 weeks

This relay excels in environments like chemical processing plants and steel mills where motor reliability is critical. For instance, a customer recently replaced legacy relays in a wastewater treatment facility’s pump array, achieving 20% faster fault detection. Compatible with Modbus RTU and Ethernet protocols, it works seamlessly with existing systems like Allen Bradley ControlLogix or Siemens S7 controllers.

Technical advantages include:

• Redundant power supply inputs for uninterrupted operation
• Thermal image monitoring via 6 RTD channels (supports platinum/nickel/copper sensors)
• Harmonic analysis up to 15th order for predictive maintenance
• Digital I/O expansion modules (up to 16 additional points)

One standout feature is its ability to withstand harsh conditions – during a field test in an oil refinery, it operated continuously at 55°C ambient temperatures while maintaining ±0.5% measurement accuracy. The SR469 series also supports IEC 61850 GOOSE messaging, enabling substation-level integration without extra hardware.