MIFIIPA55E10HI00 GE Multilin MIF II Protection Relay
Manufacturer: GE Fanuc
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Part Number: MIFIIPA55E10HI00
Condition：New with Original Package
Product Type: Feeder Protection Relays
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE MIFIIPA55E10HI00 Multilin MIF II Digital Feeder Protection Relay
The GE MIFIIPA55E10HI00, also cataloged as the MIFIIPA55E10HI00 Digital Feeder Protection Relay, operates as a dedicated hardware component for overcurrent, ground fault, and voltage monitoring execution within low- and medium-voltage feeder circuits.
Suffix Breakdown & Model Matrix
The ordering code for the Multilin MIF II series defines specific hardware features and communications options:
| Code Segment | Selection | Specification Description |
|---|---|---|
| MIFII | Base Series | Multilin MIF II Digital Protection Relay Platform |
| P | Application Type | Feeder Protection (Overcurrent/Voltage/Phase Reversal) |
| A55E10 | Hardware Config | Internal Revision Code and I/O Allocation |
| HI | Auxiliary Power | High-Range Control Voltage Power Supply Module |
| 00 | Option Code | Standard Interface Unit (No Special Enclosure Modifications) |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MIFIIPA55E10HI00 |
| Brand | GE (General Electric) |
| Origin | United States / Canada |
| Weight | 2.27 kg (5.0 lbs) |
| Dimensions | 100 mm x 80 mm x 20 mm |
| Operating Temp | -40 deg C to +70 deg C |
| Power Consumption | 24 VDC Auxiliary Supply Input |
| Rated Input Voltage | 250 VAC |
| Rated Input Current | 10 A |
| Communication Ports | RS232, RS485 |
| Supported Protocols | Modbus RTU, Modbus TCP/IP |
| User Interface | Front panel LCD with keypad |
| Mounting Type | Panel-mounted |
| Event Logging | Oscillography, fault logs, sequence-of-events (SOE) |
I/O Density & Deterministic Control Integration
The GE MIFIIPA55E10HI00 interfaces directly with high-density switchgear logic and remote supervisory systems using deterministic industrial protocols. Its internal processor performs real-time sampling of current and voltage waveforms to compute trip algorithms without introducing firmware execution latencies. Backplane data exchange between the protective trip logic and serial/Ethernet communications channels runs independently, ensuring that network traffic spikes do not delay fault clearing. Firmware flash memory retains fault records, oscillography capture, and sequence-of-events logs even during total auxiliary control power failure.
Frequently Asked Questions
Q: How does the relay maintain deterministic event recording during simultaneous fault events?
A: The internal processing engine dedicates isolated memory blocks to sequence-of-events (SOE) logging and oscillography capture, allowing the module to log fault waveforms without impacting critical trip curve execution times.
Q: What is the recommended shielding procedure for the RS485 communication line?
A: Install a twisted shielded pair cable and ground the shield at a single point—preferably at the master panel ground bus—to suppress ground loop currents and transient cross-talk.
Q: What power source does the relay require to operate?
A: The control circuit operates on a standard 24 VDC auxiliary power supply input to drive both internal relay logic and output contacts.
Field Installation Guidelines
Install the unit onto a clean panel cut-out using approved mounting brackets to achieve structural stability. Before securing the hardware, ensure that the surrounding environment stays within the operating limit of -40 deg C to +70 deg C and humidity levels remain below 95% non-condensing. Route high-voltage AC current transformer (CT) secondary wiring separately from low-voltage DC signals and serial data cables to eliminate capacitive and inductive noise coupling.
For RS485 network runs, wire a 120-ohm termination resistor across the differential communications lines at both terminal ends of the trunk loop. Connect the primary ground lug directly to the main station ground bus bar via a short, high-gauge copper jumper. Always verify correct phase orientation and double-check auxiliary power supply polarity before applying power to the unit.