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The GESR469-P5-HI-A20-E (also referred to as 469-P5-HI-A20-E) is a sophisticated Motor Management Relay from the GE Multilin (now GE Vernova) 469 series. Engineered for comprehensive protection, control, metering, and monitoring of medium to large three-phase AC motors and driven equipment, the GE SR469-P5-HI-A20-E integrates an advanced thermal model, voltage-dependent overload curves, torque protection, broken rotor bar detection, and up to 12 RTD inputs for stator, bearing, and ambient temperature monitoring. With 5 A phase CT inputs, high-range control power, four 4–20 mA analog outputs, and an enhanced front-panel LCD with larger display, the GE SR469-P5-HI-A20-E supports applications such as pumps, fans, compressors, conveyors, and high-inertia loads in industrial plants, utilities, and process industries. The drawout construction of the GE SR469-P5-HI-A20-E simplifies testing and maintenance, while its Modbus communications and EnerVista software enable seamless integration into SCADA or DCS systems. Although a legacy model (manufacturing discontinued, with 859/869 recommended as successors), the GE SR469-P5-HI-A20-E remains widely supported for retrofits and sustained operation in critical motor control centers.

Model,GE SR469-P5-HI-A20-E (469-P5-HI-A20-E)

Manufacturer,GE Multilin (GE Vernova)

Series,469 Motor Management Relay

Product Type,Motor Protection & Management Relay

Phase CT Inputs,5 A secondary (P5)

Control Power,HI: 90–300 VDC or 70–265 VAC (48–62 Hz)

Analog Outputs,"A20: 4 × 4–20 mA (isolated, scalable)"

Display,E: Enhanced front panel with larger LCD

RTD Inputs,"12 (field-programmable: 100 Ω Pt, 120 Ω Ni, etc.)"

Relay Outputs,"6 Form-C (1 Trip, alarms, auxiliaries, block start, service)"

Digital Inputs,9 opto-isolated (assignable)

Communications,"Front RS232, dual RS485 (Modbus RTU); optional Ethernet/DeviceNet"

Protection Elements,"Thermal overload, short circuit, ground fault, unbalance, RTD, undervoltage/overvoltage, phase reversal, mechanical jam, acceleration, torque, etc."

Metering,"True RMS currents/voltages, power (kW/kvar/kVA), energy, power factor, torque, demand, RTD temps, thermal capacity"

Mounting,"Drawout case (panel or 19"" rack)"

Operating Temperature,-40°C to +60°C

Applications,"Medium/large motors, MCCs, high-inertia loads, reduced-voltage starting"

Insert the GE SR469-P5-HI-A20-E into the drawout case and apply control power (90–300 VDC or 70–265 VAC).

Use the front-panel keypad and enhanced LCD or EnerVista 469 Setup software to enter motor data (FLC, CT/VT ratios, starter type, service factor) and protection setpoints.

Wire and verify phase CTs (5 A), ground CT, voltage inputs, RTDs, digital inputs, and relay outputs.

Monitor motor status (stopped/starting/running/tripped), thermal capacity used, and real-time metering values on the display.

Start the motor manually or via remote input and observe learned data (acceleration time, starting current).

Review event records, oscillography waveforms, and diagnostic messages for any alarms or trips.

Use simulation/test mode to validate protection elements without affecting the motor.

De-energize all motor and control circuits before installing or removing the GE SR469-P5-HI-A20-E drawout unit to avoid electrical hazards.

Use proper ESD protection when handling the relay; ensure the chassis is securely grounded.

Connect CT secondaries with shorting blocks; never open-circuit live CTs. Verify polarity and ratios for phase, ground, and differential inputs.

Match control power to the HI rating (90–300 VDC / 70–265 VAC) and use adequately rated wiring with proper fusing.

Route communication cables (RS485) as shielded twisted-pair with 120 Ω termination; separate from high-voltage wiring.

Install RTDs using 3-wire configuration and keep lead resistance within limits for accurate temperature readings.

After wiring, perform secondary injection tests on CT/VT/RTD inputs, test relay outputs, and confirm communication before energizing the motor.

Check the enhanced LCD display and LED indicators daily on the GE SR469-P5-HI-A20-E for motor status, active alarms, trips, or “In Service” condition.

Monitor real-time metering (currents, voltages, power, thermal capacity, RTD temperatures) and review any new events in the event recorder.

Inspect external wiring, CT connections, and terminal tightness weekly for corrosion, looseness, or overheating signs.

Verify analog output signals (4–20 mA) match expected values in the supervisory system.

Review learned motor data, trip counters, running hours, and demand peaks periodically to detect abnormal trends.

Clean the front panel and vents (relay powered off or in test mode) with a soft cloth or low-pressure air every 1–3 months.

During scheduled outages, test protection elements via simulation, force relays/analog outputs, clear maintenance data if needed, and check firmware version; backup settings via EnerVista software.

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