Description
GE SR469-P5-HI-A20-E
Technical Specifications:
- Series: GE Multilin SR469 Motor Management Relay
- Phase CT Secondary: 5 A (P5)
- Control Power: HI = 90–300 V DC, 70–265 V AC, 48–62 Hz
- Analog Output: 4–20 mA (A20), four analog outputs
- Display: Enhanced (E) with larger 40-character LCD
- Communication: RS-232 program port (9600–19,200 baud), RS-485
- Ground CT Inputs: Two
- VT Input: Delta or wye configurations
- Drawout Construction: Yes
- Conformal Coating: No (standard environment)
- Certifications: CE marked
Functional Features:
- All protection and diagnostic features of the SR469 series
- Enhanced 40-character LCD for clearer local diagnostic messages
- Sealable drawout handle to prevent unauthorized removal
- Four 4–20 mA analog outputs
- Event recording, oscillography, and motor diagnostics
- EnerVista software integration
- Field-upgradable firmware
Application Scenarios:
- Medium-voltage motor protection requiring enhanced local display
- Industrial automation in power generation, steel, cement, chemical, and paper industries
- Applications where operators need clear local diagnostic visibility
Performance Parameters:
- Same protection performance as SR469-P5-HI-A20
- Enhanced display improves local troubleshooting efficiency
- Comprehensive metering and trending capabilities
Material and Structural Characteristics:
- Drawout relay case with matching enclosure
- Industrial-grade PCB with high-reliability components
- Front panel with enhanced 40-character LCD, status LEDs (motor and output status, unit indicators), numeric keypad, control/programming keys (reset, escape, menu, value)
- RS-232 program port on front panel
- Sealable drawout handle
- Rear terminal blocks for CT, VT, control power, and I/O
Working Principle: Identical to other SR469 variants. The enhanced display provides clearer local viewing of trip and alarm diagnostic messages, setpoint values, and metering data. The protection algorithms, thermal model, and communication functions are identical to the SR469-P5-HI-A20. Installation Requirements:
- Install in a protection relay panel using the SR drawout case
- Connect 5 A phase CTs, VTs (delta or wye), and ground CT
- Wire control power (90–300 V DC or 70–265 V AC)
- Connect RS-232/RS-485 to SCADA
- Configure setpoints using EnerVista 469 Setup software
Usage Notes:
- For harsh-environment applications, consider the SR469-P5-HI-A20-EH variant with conformal coating
- Enable thermal capacity usage for unbalance bias heating effects
- Configure K-factor per motor locked-rotor current
- Use the sealable drawout handle for security
- Periodically test protection functions via the front-panel simulation feature
