GE SR469-P5-HI-A20-E-H - Relay protection module
Technical Analysis of GE 469-P5-HI-A20-E-H Motor Protection Relay
1. Product positioning and core functions
Equipment type: multifunctional digital motor protection relay (belonging to GE Multilin 469 series)
Core protection function:
Overload (inverse time limit/definite time limit)
Short circuit (instantaneous/definite time limit)
Grounding fault (50G/51G)
Phase imbalance/lack of phase
Locked rotor protection
Advanced features:
Heat capacity modeling (based on IT algorithm)
Start timeout monitoring
Fault recording (maximum 8 event records)
2. Detailed description of hardware specifications
2.1 Electrical parameters
Parameter specification
Rated input 5A (CT secondary side), with 1A version optional.
Working power supply 85-265 V AC/DC (wide range adaptive)
Output contact 5 × Co (relay output), capacity 8A/250V AC.
Communication interface RS-485 (Modbus RTU protocol)
2.2 mechanical characteristics
Installation method: DIN guide rail (35mm) or panel screw installation.
Protection grade: IP40 (up to IP52 when the panel is installed)
Working temperature:--20°C ~ +60°C (industrial grade)
3. Typical application scenarios
Heavy industry: protection of compressors, pumps and fans.
Energy field: auxiliary system of power plant (such as feed water pump motor)
OEM equipment: integrated into MCC cabinet.
4. Configuration and operation
4.1 parameter setting
Programming method:
Front panel buttons +LCD menu (multi-language support)
EnerVista 469 software (connected by USB/RS485)
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