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The GE 350-E-P1-G1-H-E-S-C-P-2E-D-N (Multilin™ 350 series) is a compact, cost-effective feeder protection relay (Intelligent Electronic Device, IED) from GE Vernova's Multilin 3 Series platform. The GE 350-E-P1-G1-H-E-S-C-P-2E-D-N provides primary or backup protection, control, metering, and monitoring for overhead lines, cable feeders, and related applications in low, medium, and high-voltage distribution networks (radial, looped, or meshed, with or without distributed generation). The GE 350-E-P1-G1-H-E-S-C-P-2E-D-N offers intuitive setup via front-panel HMI or EnerVista software, advanced communications (IEC 61850, Modbus, DNP3), programmable LEDs, and enhanced security features. The GE 350-E-P1-G1-H-E-S-C-P-2E-D-N excels in utility and industrial substations for fast fault detection (overcurrent, earth-fault, etc.), breaker control, and system reliability. The GE 350-E-P1-G1-H-E-S-C-P-2E-D-N supports drawout/non-drawout designs for easy maintenance. Overall, the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N is a reliable, feature-rich feeder management solution for modern distribution systems.

Model / Catalog Number,350-E-P1-G1-H-E-S-C-P-2E-D-N (Multilin 350 Feeder Protection Relay)

Device Type,Feeder Protection and Control IED

Power Supply,Low range (typically 24–48 V DC or similar; confirm per variant; many 350 models support wide 24–250 V DC / 100–240 V AC)

Current Inputs,1 A nominal (standard CT inputs; phase + ground)

Voltage Inputs,"Yes (for directional elements, metering, synchro-check if configured)"

Faceplate / HMI,"Enhanced faceplate (E) with LCD, full menu navigation, programmable LEDs"

Protection Functions (typical),"Overcurrent (50/51 phases/ground/neutral), directional/non-directional earth-fault, negative-sequence (46), breaker failure (50BF), thermal overload (49), voltage elements (27/59), frequency (81), arc flash (optional), auto-reclose, synchro-check"

Control & I/O,"Breaker control (close/trip), multiple digital inputs/outputs, trip/close supervision"

Communication,"Ethernet (IEC 61850 Ed.2, Modbus TCP, DNP3), serial options; advanced protocols"

Case / Mounting,Drawout design (common for easy testing/replacement)

Operating Temperature,-40 °C to +60 °C (industrial/extended range typical)

Additional Features,"Metering (currents, voltages, power, energy), event/disturbance recording, programmable logic, cybersecurity (role-based access, audit trails)"

Country of Origin,Canada (typical GE Multilin)

Life Cycle Status,"Active (ongoing support, spares, firmware updates)"

Mount the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N in a panel/rack (drawout case slides into cradle); ensure grounding and ventilation.

Connect auxiliary power (verify range) and check power-up LEDs/HMI for normal status on the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N.

Wire CT/VT inputs (phase/ground currents, voltages) and binary I/O (trip/close, alarms, controls) per polarity and diagram.

Set up communications (Ethernet/serial) to SCADA/substation network.

Use EnerVista 350 software or front HMI: configure protection settings (curves, pickup levels), CT/VT ratios, logic, and communications for the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N.

Commission: perform secondary injection tests (overcurrent/earth-fault timing), verify breaker control, and run end-to-end fault simulation.

Monitor via HMI or EnerVista: check measurements, events, faults, and alarms during live operation with the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N.

Only qualified substation protection personnel should install/commission the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N, following GE Vernova safety guidelines and IEC/IEEE standards.

Isolate power/CT circuits, lock out/tag out, short CT secondaries, discharge energy, and confirm zero voltage before wiring or handling the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N.

Use shielded/twisted-pair cables for analogs, single-point shield grounding, and fiber/Ethernet for comms to minimize EMI.

Verify CT/VT polarity/ratios/burden; never open CT circuits when energized to avoid hazards.

Comply with environmental limits (temperature, humidity, vibration) and avoid unauthorized modifications for the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N.

For directional or sensitive elements, confirm correct polarization and settings.

Check front HMI LEDs/display and status indicators on the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N each shift for alarms, healthy status, or comms issues.

Monitor measured values (currents/voltages/power), protection quantities, and event logs via HMI or EnerVista for anomalies.

Inspect enclosure, cabling, and terminals for tightness, corrosion, dust, or damage impacting the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N.

Verify time synchronization (if used) and communication links (IEC 61850 GOOSE, DNP3 polling) remain stable.

Clean ventilation/HMI screen (power off if needed) to prevent overheating or visibility issues on the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N.

Review disturbance/fault records and self-supervision logs periodically; backup configuration/settings routinely.

During planned outages, perform injection tests on key protections (overcurrent/earth-fault) and contact GE Vernova support for firmware updates or diagnostics on the GE 350-E-P1-G1-H-E-S-C-P-2E-D-N.

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