Model Interpretation

SR465: Product series (469 motor management relay platform)

P5: 5A CT secondary current input

HI: High-impedance control power (wide voltage range)

A20: 4–20 mA analog output option

Technical Parameters

Input & Power

CT Secondary Input: 5A phase current (5 channels)

Control Power: 70–265 VAC / 90–300 VDC, 48–62 Hz

Analog Outputs: 4 × 4–20 mA, burden >500 kΩ

Protection & Timing

Protection Functions: Overload, short circuit, ground fault, stall, undervoltage, phase loss, overvoltage, RTD-based overtemperature

Output Relay Operate Time: 10 ms

Instantaneous Timing Accuracy: ±50 ms

Communication

Protocols: Modbus RTU (RS485, half-duplex), RS232 (front port for programming)

Front Panel: Backlit LCD, numeric keypad, LED status indicators

Mechanical & Environmental

Dimensions: 177.5 mm H × 128.5 mm W × 119 mm D

Mounting: DIN rail or panel mount

Enclosure Rating: IP50 (front), IP20 (overall)

Operating Temperature: -40°C to +85°C

Storage Temperature: -40°C to +85°C

Humidity: 5–95% non-condensing

Certifications: UL, CE, CSA, ATEX

Additional Features

Metering: Voltage, current, power, energy, frequency, power factor

Diagnostics: Event logging, fault recording, oscillography, pre-trip data capture

Terminals: #8 ring lug, 10 AWG wire standard

Core Functions

Comprehensive Motor Protection: Detects and isolates electrical/thermal faults to prevent motor damage and unplanned downtime。

Precision Monitoring: Real-time tracking of voltage, current, temperature, and operational parameters for condition-based maintenance。

Flexible Control: Configurable start/stop logic, overload curves, and fault response strategies via front panel or software。

Industrial Communication: Seamless integration with SCADA, HMI, and PLC systems via Modbus RTU for remote monitoring/control。

Harsh Environment Reliability: Wide temperature range, high EMI immunity, and robust construction for industrial use。

Applications

Oil & Gas: Medium-voltage motor control for pumps, compressors, and fans

Power Utilities: Motor protection in power plants and substation auxiliaries

Metallurgy: Heavy-duty motor management in steel mills and metal processing

Chemical & Petrochemical: Critical process motor protection

Water Treatment: Pump and blower motor control in municipal/industrial facilities

Usage & Maintenance

Installation: Mount on DIN rail or panel; wire CT inputs, control power, and communication cables。

Programming: Use front panel keypad or connect to GE Proficy software via RS232 port。

Configuration: Set CT ratios, protection curves, communication parameters, and I/O mapping。

Maintenance: Inspect terminals annually; update firmware periodically; verify protection settings after system changes。