350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
1–1
350 Feeder Protection System
Chapter 1: Introduction
GE
Grid Solutions
Introduction
Overview
The 350 is a microprocessor-based relay for primary and backup over-current protection
of medium and low voltage distribution feeders. The relay is also suitable for providing
over-current and backup protection for small and medium size motors, transformers,
generators, and distribution bus-bars. The small footprint and the withdrawable option
make the 350 relay ideal for panel mounting on either new or retrofit installations. The
combination of proven hardware, a variety of protection and control features, and
communications, makes the relay ideal for total feeder protection and control. Equipped
with serial (RS485), USB, and Ethernet ports with the possibility of adding redundancy
(IEC62439, PRP and HSR), and a wide selection of protocols such as Modbus, DNP3.0, IEC
60870-5-103, 60870-5-104, IEC61850 GOOSE, OPC-UA, the 350 relay is the best-in-class
for MCCs and PCCs, SCADA and inter-relay communications. The 350 relay provides
excellent transparency with respect to power system conditions and events, through its
four-line 20-character display, as well as the EnerVista 3 Series Setup program.
Conveniently located LEDs provide indication of relay operation, alarm, and pickup, as well
as breaker, and relay status.
The 350 relay provides the following key benefits:
•
Withdrawable small footprint – saves on rewiring and space. (non-draw out version is
also available)
•
Multiple protection groups with the added flexibility of switching through a wide
selection of overcurrent protection and control features.
•
Fast setup (Quick Setup) menu for power-system setup and a simple overcurrent
protection configuration.
•
Large four-line LCD display, LEDs, and an easy-to-navigate keypad.
•
Multiple communication protocols for simultaneous access when integrated into
monitoring and control systems.
