Product Overview

The GE Multilin 750-P5-G5-S5-HI-A20-R-E is a high-performance feeder management relay from the renowned Multilin 750/760 series, engineered by GE Grid Solutions to deliver comprehensive protection, control, monitoring, and metering for medium and large-scale distribution networks . This relay is built on the GE Multilin SR750 platform and is widely deployed in power generation, substation, petrochemical, and metallurgical applications where reliable feeder protection is essential .

The model designation GE Multilin 750-P5-G5-S5-HI-A20-R-E provides a detailed specification of the device’s hardware configuration. The “P5” and “G5” suffixes indicate 5A nominal phase and ground current transformer inputs, respectively, while “S5” denotes five digital output channels . The “HI” suffix specifies high-range control power (88-300V DC or 70-265V AC), and “A20” identifies the 20 analog input channels . The “R” and “E” designations indicate enhanced output relay configuration and the drawout case enclosure, which provides mechanical protection for the removable relay module .

The GE Multilin 750-P5-G5-S5-HI-A20-R-E integrates an extensive suite of ANSI protection elements including overcurrent (50/51), undervoltage (27), overvoltage (59), directional power (67), and underfrequency (81) functions, along with advanced features such as synchrocheck (25), breaker failure (50BF), cold load pickup, and bus transfer schemes . This multifunction capability eliminates the need for multiple discrete protection devices, simplifying panel design and reducing overall system cost .

Technical Specifications