GE MIFIIPI55E10HI00 | Multilin MIF II Feeder Management Relay

Technical Specifications

The IPS relay database classifies MIFIIPI55E10HI00 under the GE MIFII family as a microprocessor feeder-protection device, rather than a PLC/DCS I/O module.

Product Introduction

The GE Multilin MIFIIPI55E10HI00 is a member of the MIF II feeder protection and control family. It is designed for electrical distribution applications where the relay must monitor feeder currents and provide protection against abnormal operating conditions. The MIF II family is specifically classified as a microprocessor-based feeder protection and control platform.

The GE MIFIIPI55E10HI00 is particularly relevant to legacy switchgear and distribution systems. Its protection functions can be used to detect phase and ground faults and initiate the appropriate trip or control response through the configured protection scheme.

The exact ordering code contains configuration information, so the complete MIFIIPI55E10HI00 designation should be retained when sourcing a replacement. The relay database also shows that this exact model existed across multiple MIF II firmware generations, including V3.03 and V4.01.

MIFIIPI55E10HI00

Main Features & Field Considerations

Feeder protection

The MIF II platform is intended for feeder protection and control. Typical protection schemes include phase overcurrent and ground-fault protection, with the exact available elements depending on firmware and configuration.

Measurement and monitoring

The relay can provide electrical measurements used for feeder supervision, protection decisions, event analysis, and operator monitoring. Do not assume every measurement or metering feature is enabled on a particular installed relay without checking its configuration.

Legacy firmware

Firmware matters on the MIFIIPI55E10HI00. The relay database identifies the exact model with both V3.03 and V4.01 firmware generations. A replacement with a different firmware revision should therefore be checked against the existing protection settings and engineering configuration.

CT/VT compatibility

Before replacement, verify the original CT and VT ratios, phase sequence, grounding arrangement, and protection settings. A relay can be electrically functional while still being incorrectly configured for the installed instrument transformers.

Replacement Checks

Before replacing a , record:

1. Exact model:
2. Firmware version
3. Relay configuration/settings
4. CT ratios
5. VT/PT ratios, where applicable
6. Phase and ground protection settings
7. Trip output assignments
8. Digital-input assignments
9. Communication settings
10. Event and fault-record configuration
11. Auxiliary supply rating
12. Existing wiring and terminal assignments

If the relay is protecting an energized feeder, follow the site’s approved protection-system isolation and switching procedure before removing it.

Important Specification Caution

There is a lot of unreliable information online for this part number. One commercial listing correctly identifies the part as a GE Multilin MIF II feeder management relay, while other pages incorrectly describe the same number as an analog I/O module, Mark VI/Mark VIe module, Ethernet interface, or a 64-output relay board.

The most credible classification is the GE Multilin MIF II feeder protection/control relay, supported by the independent relay-model database.

I would therefore not publish the commonly repeated claims of 64 SPST outputs, 10 A contact rating, VME bus, Mark VI compatibility, or Honeywell Experion compatibility for this exact part number. Those descriptions appear to be conflations with unrelated equipment.

Procurement Note

For procurement, use the complete designation:

GE Multilin — MIF II Feeder Protection and Control Relay

Because this is legacy protection equipment, an exact model match is only the first check. Firmware, CT/VT configuration, protection settings, output assignments, and communication configuration should all be compared before commissioning the replacement.