Description
Product Overview
The GE Multilin MIFIIPI15E10HI00 is a MIF II Digital Feeder Relay designed for protection and control of medium-voltage and industrial distribution feeders. It combines numerical protection functions, feeder monitoring, metering, and circuit breaker control in a compact relay platform.
The relay is intended for applications where dependable feeder protection and fast fault detection are required. It can be used for primary or backup protection in industrial power systems, utility substations, commercial distribution networks, and other electrical installations.
The MIF II platform provides configurable protection elements and measurement functions, allowing the relay to be adapted to different feeder protection schemes. The MIFIIPI15E10HI00 version is configured for three-phase plus ground protection, IEC-style protection curves, English language operation, and a high-range AC/DC power supply.
Key Features
- GE Multilin MIF II digital feeder protection platform
- Three-phase plus ground protection
- Numerical overcurrent protection
- Phase and ground fault protection
- Circuit breaker trip and control functions
- Current and voltage system monitoring
- Electrical metering and measurement
- Event and fault information for troubleshooting
- Programmable protection settings
- IEC protection curve configuration
- High-range universal power supply
- Compact panel-mounted relay design
- Suitable for industrial and utility feeder applications
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | GE Multilin |
| Model | MIFIIPI15E10HI00 |
| Product Family | MIF II |
| Product Type | Digital Feeder Protection Relay |
| Application | Feeder Protection and Control |
| Protection Configuration | 3-Phase + Ground |
| Protection Curve | IEC |
| Power Supply Code | HI |
| Power Supply Range | Approx. 88–300 V AC/DC |
| Nominal Supply | High-range AC/DC |
| Protection Type | Numerical Overcurrent / Feeder Protection |
| Measurement | Electrical Current and System Monitoring |
| Control | Circuit Breaker Trip / Control |
| User Interface | Front-Panel Relay Interface |
| Communications | Model/configuration dependent |
| Mounting | Panel Mount |
| Language | English |
| Series | Multilin MIF II |
| Condition | New Open Box / New Surplus |
Protection Functions
The MIF II relay is built around feeder protection rather than simple switching or monitoring. Its protection logic can be configured according to the feeder application and coordination requirements.
Typical protection functions include:
- Phase overcurrent protection
- Ground/earth fault protection
- Instantaneous overcurrent protection
- Time-delayed overcurrent protection
- Multiple protection stages
- Breaker control
- Fault indication
- Trip monitoring
- Event recording
- Measurement and metering
Protection settings should always be coordinated with the feeder CT ratios, system voltage, fault levels, breaker characteristics, and the overall protection study.
Application Areas
The MIFIIPI15E10HI00 can be applied in a variety of electrical distribution systems:
Industrial Power Distribution
Used for protection of outgoing feeders supplying motors, transformers, process equipment, and plant distribution panels.
Utility Substations
Can be integrated into feeder protection schemes where numerical overcurrent and ground-fault protection are required.
Commercial Power Systems
Suitable for electrical distribution equipment requiring feeder monitoring and circuit breaker control.
Power Generation Facilities
Can be used on auxiliary and distribution feeders as part of a coordinated protection system.
Installation & Configuration
Before installation, verify that the relay ordering code matches the required power supply, CT/VT configuration, protection functions, communication options, and application requirements.
Recommended commissioning procedure:
- Confirm the complete model number on the relay nameplate.
- Check the auxiliary supply before energizing the relay.
- Verify CT and VT wiring against the protection drawing.
- Confirm phase sequence and polarity.
- Enter the required feeder protection settings.
- Configure IEC protection curves and pickup values where applicable.
- Verify digital inputs and output contacts.
- Test breaker trip and close circuits.
- Perform secondary injection testing for protection elements.
- Review event and fault records after testing.
- Confirm communication settings if a communication interface is installed.
- Record the final relay configuration for future maintenance.
Do not apply field wiring based only on the external appearance of the relay. The complete ordering code determines important hardware and functional options.
Maintenance & Troubleshooting
Routine maintenance should include inspection of the relay terminals, auxiliary power connections, CT/VT wiring, communication connections, and breaker control circuits.
If a protection alarm or trip occurs, first determine whether the event originated from an actual feeder fault or from incorrect settings, wiring, or an external trip signal.
Useful checks include:
- Review relay event records.
- Check active alarms.
- Verify measured phase currents.
- Compare current readings with expected feeder values.
- Inspect CT secondary circuits.
- Check protection pickup and time-delay settings.
- Verify breaker auxiliary contacts.
- Inspect trip circuit wiring.
- Check auxiliary supply voltage.
- Confirm communication status where applicable.
A protection relay should not simply be reset after an unexplained trip. The recorded fault information should be reviewed before returning the feeder to normal service.
Important Replacement Notes
When replacing another MIF II relay, compare the complete ordering code, not just the MIF II family name.
The following items should be matched:
- Power supply range
- CT input configuration
- VT input configuration
- Protection functions
- Digital I/O configuration
- Communication interface
- Firmware compatibility
- Protection curve type
- Panel dimensions and wiring
- Existing protection settings
A relay from the same product family may still have different hardware options and cannot automatically be treated as a direct replacement.
Common Questions
Q: What is the MIFIIPI15E10HI00?
A: It is a GE Multilin MIF II numerical digital feeder protection relay.
Q: What is the main application of this relay?
A: It is primarily used for feeder protection, overcurrent protection, ground-fault protection, monitoring, and circuit breaker control.
Q: Is it a PLC module?
A: No. It is a dedicated electrical protection relay rather than a PLC or DCS I/O module.
Q: What type of system does it protect?
A: The MIF II platform is intended for electrical distribution feeders and can be used in industrial, utility, commercial, and power-generation installations.
Q: What does the HI suffix indicate?
A: The HI power-supply designation identifies the high-range AC/DC auxiliary power configuration. The exact acceptable supply range should be confirmed against the complete unit documentation and nameplate.
Q: Does it provide feeder overcurrent protection?
A: Yes. Overcurrent protection is a primary function of the MIF II feeder relay platform.
Q: Can it control a circuit breaker?
A: Yes. The relay platform supports breaker trip/control functions when the appropriate hardware and wiring are provided.
Q: Is MIFIIPI15E10HI00 interchangeable with every MIF II relay?
A: No. The complete ordering code must be compared because MIF II relays are available with different input, output, power supply, and functional configurations.
Related GE Multilin Models
For GE Multilin spare-parts planning and feeder protection applications, other commonly encountered models include:
- MIFII — MIF II Digital Feeder Protection Relay
- MIFIIPA51E10HIOO — MIF II Digital Feeder Relay
- 750-P5-G5-S5-HI-A1-R-E-H — Feeder Management Relay
- F650 — Protection and Digital Bay Controller
- 369-HI-R-M-0-E-0-E — Motor Management Relay
- SR750 — Feeder Management Relay
- SR760 — Feeder Protection Relay
- D30 — Digital Feeder Protection Relay
- F60 — Feeder Protection System
- L90 — Line Differential Protection System
Product Condition: New Open Box / New Surplus. Before installation, verify the nameplate, complete ordering code, firmware/configuration requirements, and supplied accessories against the existing protection system.
