350-E-P5-G5-H-E-E-N-N-SN-D-N GE Multilin Feeder Protection Relay
Manufacturer: GE Fanuc
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Part Number: 350-E-P5-G5-H-E-E-N-N-SN-D-N
Condition：New with Original Package
Product Type: Protection Relays
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE Multilin 350-E-P5-G5-H-E-E-N-N-SN-D-N 350 Series Feeder Protection Relay
The GE Multilin 350-E-P5-G5-H-E-E-N-N-SN-D-N, also cataloged as the 350 Feeder Protection Relay, operates as a dedicated hardware component for phase, ground, and sensitive ground fault detection within substation control architectures. Operating on a universal auxiliary power supply (70-265 VAC / 88-300 VDC), the unit processes 5 A Phase CT and 5 A Ground CT signals to drive ANSI 50/51 and 50N/51N overcurrent algorithms, breaker failure logic, and thermal overload tracking. Integrated communications execute Modbus RTU/TCP, DNP3.0, and IEC 60870-5-103 protocols across optional Ethernet fiber physical layers to export waveform captures and transient event logs.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 350-E-P5-G5-H-E-E-N-N-SN-D-N |
| Brand | GE Multilin |
| Origin | USA |
| Weight | 1.3 kg |
| Dimensions | 435 mm x 435 mm x 435 mm |
| Operating Temp | -40 deg C to +70 deg C |
| Power Consumption | 70-265 VAC / 88-300 VDC universal auxiliary input |
| Current Inputs | 5 A Phase CTs, 5 A Ground CTs |
| Protection Functions | ANSI 50/51, 50N/51N, sensitive ground, breaker failure, thermal overload |
| Relay Outputs | 2 electromechanical relays configurable for trip, alarm, or control |
| Communication Protocols | Modbus RTU / TCP/IP, DNP3.0, IEC 60870-5-103, optional Ethernet fiber |
| Timing Range | Neutral overcurrent timing: 0.00 to 300.00 s in 0.01 s increments |
| Immunity Ratings | EMC immunity certified per IEC 61000-4-8 |
Backplane Bus Communication Velocity and Deterministic Networks
The GE Multilin 350-E-P5-G5-H-E-E-N-N-SN-D-N maintains backplane bus communication velocity across EtherNet/IP and Modbus TCP/IP networks. Onboard digital signal processors sustain firmware flash compatibility during transient waveform logging to non-volatile memory. By isolating high-speed current calculation loops from external SCADA network requests, the relay hardware preserves deterministic execution during simultaneous trip relay output operations and automated breaker control sequences.
Frequently Asked Questions
Q: How are the output relays configured for fault isolation schemes?
A: The module contains two electromechanical relays that field engineers program directly via front panel logic or SCADA interfaces to execute trip commands, system alarms, or breaker interlock controls.
Q: What parameter steps are available for neutral overcurrent timing adjustments?
A: The neutral overcurrent element allows timing settings from 0.00 to 300.00 seconds adjustable in precise 0.01-second steps.
Q: How does the unit preserve transient logs during system power losses?
A: The internal transient recorder writes waveform captures and event logs directly to battery-backed RAM to preserve diagnostic data until power resumes.
Field Installation Guidelines
Engineers must observe strict field installation procedures during panel layout and connection:
- Mount the 435 mm x 435 mm x 435 mm chassis securely into the panel cutout, verifying drawout locking mechanisms seat flush against the rack frame.
- Connect the 70-265 VAC or 88-300 VDC power conductors to the designated power terminals using properly sized lug connectors.
- Pass 5 A current transformer secondary wiring through shorting block terminals before connecting to Phase and Ground CT terminals.
- Attach a dedicated ground strap between the relay chassis grounding stud and the enclosure earth bus to ensure compliance with IEC 61000-4-8 EMC immunity criteria.
- Run Ethernet fiber cables and RS-485 communication lines through dedicated low-voltage cable paths separated from AC power lines.