Product Description
General Electric SR469-P5-HI-A20-E Multilin Motor Management Relay
- Manufacturer: General Electric (now under GE Vernova)
- Series: Multilin SR 469
- Model/Part Number: SR469-P5-HI-A20-E
- Description: Motor Management Relay for medium-voltage motor protection in Multilin SR 469 series
Overview
The General Electric SR469-P5-HI-A20-E is a Motor Management Relay from the Multilin SR 469 series, manufactured by GE and now managed by GE Vernova. Designed for comprehensive protection and management of medium-voltage motors, it offers advanced thermal modeling, multiple RTD inputs, and customizable protection features. It is used in industrial applications such as power generation, oil and gas, and manufacturing to ensure motor reliability and longevity. The -E suffix indicates an enhanced front panel, and the unit includes a conformal coating for harsh environments.
Technical Specifications
| Specification | Details |
|---|---|
| Model | SR469-P5-HI-A20-E |
| Series | Multilin SR 469 |
| Type | Motor Management Relay |
| Function | Thermal protection, metering, and control for medium-voltage motors |
| Phase CT Secondaries | 5 A |
| Control Power | 90–300 VDC, 70–265 VAC @ 48–62 Hz |
| Analog Outputs | Four 4–20 mA outputs |
| RTD Inputs | 12 programmable (100 Ω Platinum, 120 Ω Nickel, 100 Ω Nickel, 10 Ω Copper) |
| Digital Inputs | 6 programmable inputs |
| Relay Outputs | 5 Form-C outputs (trip, alarm, auxiliary) |
| Ground CT Inputs | Two (1 for GE power management, 1 for 50:0.025 A ground CT) |
| VT Inputs | Supports delta or wye configuration |
| Protection Features | Thermal overload, overcurrent, undercurrent, phase differential, ground fault, unbalance, torque, overvoltage, undervoltage, overfrequency, underfrequency, breaker failure, broken rotor bar |
| Metering | Current, voltage, power, energy, frequency, torque, temperature |
| Communication Ports | RS232 (front, 9600–19,200 baud), RS485 (rear, Modbus RTU) |
| Display | Enhanced 40-character LCD with keypad |
| Event Recording | 256 events with time, date, cause, and system parameters |
| Connectors | Terminal blocks for I/O, CT/VT, and communication; RS232 DB-9 port |
| Environmental Protection | Conformal coating for harsh environments (dust, humidity, corrosive agents) |
| Operating Temperature | -40°C to +60°C (-40°F to +140°F) |
| Storage Temperature | -40°C to +80°C (-40°F to +176°F) |
| Relative Humidity | Up to 95% (non-condensing) |
| Dimensions | Approx. 21.6 cm x 22.4 cm x 24.1 cm (8.5 x 8.8 x 9.5 in) with SR469-CASE |
| Weight | Approx. 7.5 kg (16.5 lbs) with case |
| Mounting | Draw-out case, 19-inch rack or panel mount |
| Certifications | CE, UL, CSA, IEC |
| Compatibility | Multilin platform, EnerVista 469 software |
| Manual | GEK-106474, 1601-0122-A9 |