Model: 750-P5-G5-HI-A20-R
Product Overview
Commercial availability is handled through direct RFQ, model verification and export-oriented follow-up rather than public cart checkout.
Datasheet Preview
Use attached product manuals when available. If the manual is not public yet, request the full file directly through RFQ.
Commercial Path
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Technical Dossier
The 750 Series was developed under GE Multilin's Multilin platform strategy, sharing firmware and communications architecture with the 735, 745, and 760 relay families. Early firmware revisions (pre-3.0x) supported only RS-485 Modbus RTU communications, limiting integration with modern SCADA systems. Firmware 4.xx introduced DNP3 Level 2 support, enabling direct integration with utility-grade EMS/DMS platforms. Hardware revision C introduced an enhanced analog input board with improved CT burden characteristics, while revision D added an optional IEC 61850 GOOSE messaging module for substation automation applications.
The following SKUs represent the documented GE Multilin 750 Series model range. Each model code encodes the hardware configuration: power supply type, I/O count, communications options, and mounting format.
750-P5-G5-HI-A20-R: Feeder relay, 125/250 Vdc PS, 5A CT, ground fault, high-impedance, 20 analog outputs, rack mount — the subject unit of this listing.
750-P5-G5-HI-A20-E: Identical to -R variant with panel-flush (embedded) mounting configuration.
750-P5-G5-HI-A00-R: Feeder relay, 125/250 Vdc PS, 5A CT, ground fault, high-impedance, no analog outputs, rack mount.
750-P5-G5-LO-A20-R: Feeder relay, 125/250 Vdc PS, 5A CT, ground fault, low-impedance, 20 analog outputs, rack mount.
750-P5-G1-HI-A20-R: Feeder relay, 125/250 Vdc PS, 1A CT, ground fault, high-impedance, 20 analog outputs, rack mount.
750-P5-G1-LO-A20-R: Feeder relay, 125/250 Vdc PS, 1A CT, ground fault, low-impedance, 20 analog outputs, rack mount.
750-P1-G5-HI-A20-R: Feeder relay, 24/48 Vdc PS, 5A CT, ground fault, high-impedance, 20 analog outputs, rack mount.
750-P1-G5-LO-A20-R: Feeder relay, 24/48 Vdc PS, 5A CT, ground fault, low-impedance, 20 analog outputs, rack mount.
750-P1-G1-HI-A20-R: Feeder relay, 24/48 Vdc PS, 1A CT, ground fault, high-impedance, 20 analog outputs, rack mount.
750-P5-G5-HI-A20-R-485: Standard -R variant with factory-configured RS-485 Modbus RTU port as primary comms.
750-P5-G5-HI-A20-R-DNP: Standard -R variant with DNP3 Level 2 communications module installed.
750-P5-G5-HI-A20-R-61850: Standard -R variant with IEC 61850 GOOSE/MMS Ethernet module (100Base-TX).
750-P5-G5-HI-A00-E: Panel-flush mount, no analog outputs, 5A CT, high-impedance ground fault, 125/250 Vdc PS.
750-P5-G1-HI-A00-R: Rack mount, no analog outputs, 1A CT, high-impedance ground fault, 125/250 Vdc PS.
750-P5-G5-LO-A00-R: Rack mount, no analog outputs, 5A CT, low-impedance ground fault, 125/250 Vdc PS.
750-P5-G5-HI-A20-R-HV: High-voltage input variant rated for 120 Vac VT secondary inputs, rack mount.
750-P5-G5-HI-A20-E-DNP: Panel-flush mount with DNP3 communications, 5A CT, high-impedance, 20 analog outputs.
Each GE Multilin 750 Series unit processed by DriveKNMS undergoes a structured inspection and functional verification protocol. Visual inspection covers front panel display integrity, keypad functionality, rear terminal block condition, and communications port physical integrity. Power-on testing verifies correct boot sequence, firmware version display, and self-test pass status as reported by the relay's internal diagnostics. Protection element verification is performed using a three-phase relay test set (Omicron CMC or equivalent) to confirm pickup and timing accuracy for Phase Overcurrent (51P), Ground Overcurrent (51G/51N), and Instantaneous elements (50P/50G) against the relay's programmed setpoints. Communications testing confirms Modbus RTU register map response or DNP3 data object availability as applicable to the unit's communications configuration. Units with IEC 61850 modules are tested for GOOSE subscription and publication using a dedicated IEC 61850 test client. Any unit failing functional verification is quarantined and documented; no failed units are relisted for sale.
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