350‑E‑P1‑G1‑H‑E‑S‑C‑N | GE Multilin Feeder Protection Relay

GE Multilin 350‑E‑P1‑G1‑H‑E‑S‑C‑N Feeder Protection Relay – Product Description

Overview

The GE Multilin 350‑E‑P1‑G1‑H‑E‑S‑C‑N is a digital feeder protection relay designed to provide advanced protection, monitoring, and control for industrial and utility power systems. Moreover, it integrates flexible communication, programmable logic, and diagnostic capabilities to enhance feeder safety and operational efficiency. This model supports 1 A CT inputs, making it suitable for precise measurements in compact feeder configurations.

Technical Specifications

Current Inputs:

• Phase CTs: 1 A (P1 configuration)

• Ground CTs: 1 A (G1 configuration)

Protection Functions:

• Phase overcurrent (ANSI 50/51)

• Ground overcurrent (ANSI 50N/51N)

• Breaker failure protection

• Thermal overload protection

• Voltage and frequency monitoring (optional)

Relay Outputs:

• Electromechanical outputs for trip, alarm, or control functions (H)

Communication Protocols:

• Ethernet (E)

• Serial RS‑232/RS‑485 (S)

• Supports Modbus RTU/TCP, DNP3.0, IEC 60870‑5‑103

Control Features:

• Breaker control logic with interlocks (C)

• Programmable logic and virtual inputs

Recording & Diagnostics:

• Event recording with timestamp

• Waveform capture for fault analysis

• Self-diagnostics and preventive maintenance

Power Supply:

• Universal AC/DC supply (88–300 VDC / 70–265 VAC)

• Typical consumption: 36 VA (120–240 V AC) or 20 W (125–250 V DC)

Environmental Ratings:

• Operating temperature: –40 °C to +70 °C

• Storage temperature: –40 °C to +85 °C

• Pollution degree: 2

• EMC immunity per IEC 61000 standards

Physical Specifications:

• Compact case design for panel mounting

• Weight: 3.73 kg

• Dimensions: 220 × 180 × 200 mm

FAQ

Q1: What CT inputs does this relay support?
It supports 1 A phase and ground CTs for precise feeder measurements.

Q2: Can it communicate with SCADA systems?
Yes, via Ethernet and serial ports using Modbus RTU/TCP, DNP3.0, and IEC 60870‑5‑103 protocols.

Q3: What is the operating temperature range?
The relay operates reliably between –40 °C and +70 °C.

Q4: Does it provide breaker control logic?
Yes, it includes breaker interlocks and programmable logic for customized schemes.

Q5: Is event recording available?
Yes, events are timestamped and waveform captures are stored for analysis.