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GE Multilin MIFIIPI11E1RHI00 Digital Feeder Protection Relay

The GE Multilin MIFIIPI11E1RHI00, also cataloged as the MIF II Digital Feeder Protection Relay, operates as a dedicated hardware component for feeder current protection, breaker monitoring, and trip logic execution within GE Multilin MIF II protection platforms.

Hardware Specifications

Parameter	Specification
Model	MIFIIPI11E1RHI00
Brand	GE Multilin
Origin	United States
Dimensions	Compact panel-mount chassis; exact dimensions not specified in available documentation
Operating Temp	Industrial operating range; exact value not specified in available documentation
Product Series	MIF II Series Feeder Protection Relay
Protection Functions	50P/50G instantaneous overcurrent, 51P/51G time overcurrent, 49 thermal overload
Control Power Supply	Universal AC/DC power supply
System Frequency	50/60 Hz
Display Interface	16 x 2 character LCD display with 5-button keypad
Digital Inputs	Programmable contact inputs
Relay Outputs	6 output relays including trip, service, and auxiliary functions
Communication Ports	Isolated RS-232 front port and RS-485 rear port
Communication Protocols	Modbus RTU and IEC 60870-5-103
Event Storage	Up to 32 sequence-of-events records
Fault Records	Last 5 trip records with fault information
Oscillography	Analog and digital waveform capture

Industrial Control Firmware and Communication Functions

The GE Multilin MIFIIPI11E1RHI00 integrates programmable logic, firmware-based protection algorithms, and serial communication functions for feeder control applications. The relay supports deterministic protection execution through embedded processing, with configurable I/O mapping and communication parameters. Firmware flash compatibility allows setting management, diagnostic access, and waveform retrieval through GE EnerVista software.

The relay provides Modbus RTU and IEC 60870-5-103 communication channels through isolated serial interfaces. Programmable inputs and outputs allow integration with breaker control circuits, alarm systems, and station monitoring networks. The internal logic supports automatic recloser functions, cold load pickup handling, and breaker failure detection.

Frequently Asked Questions

Q: Does the MIFIIPI11E1RHI00 support hot-swap replacement during operation?
A: The relay is designed as a panel-mounted protection device. Hot-swap replacement capability is not specified in the available documentation. Replacement procedures should follow site isolation and protection maintenance requirements.

Q: What communication interfaces are available for configuration and monitoring?
A: The relay provides an isolated RS-232 front communication port for PC connection and an RS-485 rear communication port supporting Modbus RTU and IEC 60870-5-103 protocols.

Q: How are breaker condition functions monitored by the relay?
A: The relay includes breaker failure detection logic and I2t wear monitoring functions for evaluating breaker operating conditions through configured protection and control logic.

Field Installation Guidelines

Install the MIFIIPI11E1RHI00 in a suitable panel location with correct mechanical fastening and sufficient clearance for wiring access. Route current transformer inputs, control wiring, and communication cables separately to reduce electrical interference.

Use shielded communication cables where required by the installation environment. Connect cable shields according to the site grounding scheme and avoid parallel routing of low-level communication wiring with high-current conductors.

Verify auxiliary power polarity, input contact wiring, and output relay assignments before energizing the device. Confirm protection settings, communication parameters, and trip logic configuration through the approved engineering software before placing the relay into service.

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