350-E-P5-G5-H-E-E-N-P-1E-D-N GE Multilin 350 Feeder Protection Relay

• Brand
  GE
• Model
  350-E-P5-G5-H-E-E-N-P-1E-D-N
• Product Name
  Multilin 350 Feeder Protection Relay, Drawout Type
• Place of Origin
  United States
• Customs HS Code
  85371011
• Power Supply
  120–240 Vac / 125–250 Vdc
• Dimensions
  201.51 mm × 138.2 mm × 244.2 mm
• Weight
  3.9 kg
• Operating Temperature
  -40 ℃ ~ +60 ℃
• Storage Temperature
  -40 ℃ ~ +85 ℃
• Warranty
  1 year
• Product Status
  original

Technical Parameters of GE 350-E-P5-G5-H-E-E-N-P-1E-D-N

Product Type: Multilin 350 Feeder Protection Relay

Phase Current Input: 5 A

Ground Current Input: 5 A

Power Supply: 125–250 VDC / 120–240 VAC

I/O Configuration: 10 digital contact inputs, 7 relay outputs (2 Form A, 5 Form C)

Protection Functions: Extended protection logic covering 49 thermal overload, 50P/50G/50N instantaneous overcurrent, and 51P/51G/51N inverse time overcurrent

Control Functions: CLP cold load pickup, 86 lockout relay

Communication Interfaces: Front USB port, rear isolated RS485 port; compatible with Modbus RTU, DNP3.0 and IEC 60870-5-103 protocols

Enclosure Type: Draw-out case

Display: English LCD screen, no programmable LEDs

Relative Humidity: 95% maximum, non-condensing at 55 ℃

Application: Medium-voltage feeder protection, energy metering, status monitoring and control in power distribution networks

The GE Multilin 350 feeder protection relay features a front USB port and an isolated rear RS485 serial communication port.

The front USB interface is dedicated to local commissioning with EnerVista setup software, supporting parameter configuration, setting upload and download, as well as retrieval of fault waveforms and event logs.

The rear RS485 bus supports Modbus RTU, DNP3.0 and IEC 60870-5-103 protocols, allowing multi-drop connection to SCADA, DCS and PLC systems.

It enables real-time transmission of measurement data, protection status, trip signals, alarms, sequence-of-event records and fault records.

Remote read/write access to protection settings is available, alongside remote control functions for circuit breaker open and close operations.

Time synchronization over the communication bus guarantees uniform time stamps for fault and event logs.

Galvanic isolation on the RS485 port mitigates on-site electrical interference and delivers reliable communication performance within substation environments.

Communication parameters such as baud rate, slave address and parity can be configured either locally through the relay front panel or remotely via EnerVista software.

FAQ: GE 350-E-P5-G5-H-E-E-N-P-1E-D-N Multilin 350 Feeder Protection Relay

Q: What is GE 350-E-P5-G5-H-E-E-N-P-1E-D-N?

A: GE 350-E-P5-G5-H-E-E-N-P-1E-D-N is a Multilin 350 series feeder protection relay, designed for medium voltage feeder protection, control, metering and fault recording in utility and industrial power distribution systems.

Q: What does the suffix code P5 and G5 mean for this GE 350 relay?

A: P5 stands for 5A phase CT current input; G5 stands for 5A ground current input, matching standard 5A current transformers widely used in substations.

Q: What is the power supply range of GE 350-E-P5-G5-H-E-E-N-P-1E-D-N?

A: The H power supply supports 125–250 VDC or 100–240 VAC, suitable for common substation DC and AC power supply loops.

Q: What protection functions does GE 350-E-P5-G5-H-E-E-N-P-1E-D-N support?

A: It includes ANSI 50/51 overcurrent, 50G/51G ground fault, directional overcurrent, undervoltage, overvoltage, synchrocheck, auto-reclosing and arc flash protection functions.

Q: What communication protocols does the 1E communication option support?

A: The 1E variant supports Ethernet, Modbus TCP, DNP3.0 and IEC 60870-5-104 for SCADA and DCS system connection.

Q: What software do I use to configure and commission GE 350-E-P5-G5-H-E-E-N-P-1E-D-N?

A: GE EnerVista software is used for parameter setting, relay testing, fault record viewing and sequence of event log analysis.

Q: What are the typical application scenarios for this GE Multilin 350 relay?

A: Widely used in power substations, oil & gas plants, mining facilities, chemical factories and industrial distribution networks for feeder and small transformer protection.

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