2025-12-30 BY
IN Company News

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Wei Xiu zhu
WhatsApp:+852 5796 0986
Wechat:13395077993
Zhejiang Yiwu Beixun Automation Technology Co., Ltd
China (Zhejiang) Pilot Free Trade Zone, No. 2 Chunpai Road, Beiyuan Street, Yiwu City, Jinhua City, 7F 7059
Website：www.bxplc2.com
Email:3076784238@qq.com

1. Product Basic Identification
Model Number: SR469-P5-HI-A20
Brand: GE Multilin (General Electric)
Product Category: Digital Motor Protection & Management Relay
Application Scope: Medium & High Voltage Motor Protection, Monitoring and Control
GE Multilin SR469-P5-HI-A20 Motor Management Relay
2. Core Hardware Configuration & Rated Parameters
Control Power Supply: 85-250V AC/DC (Wide Voltage Range, Universal Power Module)
Current Input Rating: 5A AC / 1A AC (Configurable CT Primary Ratio, 0.1~5000:1)
Voltage Input Rating: 0-480V AC Phase-to-Phase / Phase-to-Ground
Communication Module: Built-in RS485 (Modbus RTU), Optional Ethernet (Modbus TCP/IP)
I/O Configuration: 8 Programmable Digital Inputs, 6 Programmable Relay Outputs (Form C Contact)
Operating Temperature Range: -40°C to +70°C (-40°F to +158°F), Industrial Grade Wide Temperature
Altitude Adaptation: Up to 2000 meters, Derating Applicable for Higher Altitudes
3. Primary Protection Functions
Overcurrent & Thermal Protection
– Stator thermal overload protection (IEEE 242/ANSI C37.90 standard)
– Instantaneous overcurrent protection (phase & ground fault)
– Time-delayed phase overcurrent and earth fault protection
Motor Special Protection
– Locked rotor protection (stuck rotor detection)
– Unbalance/negative sequence current protection (2-100% unbalance ratio)
– Underload/loss of load protection (pump & fan application priority)
– Phase loss/open phase protection with ultra-fast trip response
Voltage & Power Protection
– Undervoltage/overvoltage protection (phase voltage & line voltage)
– Voltage unbalance and phase rotation detection
– Reverse power and underpower protection for generator motors
4. Monitoring & Control Capabilities
– Real-time electrical measurement: 3-phase current, voltage, active/reactive power, power factor, energy consumption
– Motor running status monitoring: operating time, start-up count, trip event record (1000+ event logs)
– Programmable motor start control: direct-on-line (DOL), star-delta, soft starter, VFD start mode
– Remote control & local control dual mode, with manual/automatic switchover function
– Fault waveform capture and fault cause analysis, fault memory non-volatile storage