P54 MiCOM 5th Generation
Line Differential and Distance Protection
The P54, part of the MiCOM P40 Agile 5th Generation family, is a line differential and distance Protection that delivers high performance processing and a graphical HMI as standard. A cost-effective range of transmission/sub-transmission class protection relays providing comprehensive line differential protection for up-to 3 line ends, with in-built subcycle transmission class distance and directional earth fault protection.
P54 MiCOM 5th Generation
Line Differential and Distance Protection
The P54, part of the MiCOM P40 Agile 5th Generation family, is a line differential and distance Protection that delivers high performance processing and a graphical HMI as standard. A cost-effective range of transmission/sub-transmission class protection relays providing comprehensive line differential protection for up-to 3 line ends, with in-built subcycle transmission class distance and directional earth fault protection.
Overview
The P54 MiCOM 5th Generation range of transmission-class protection relays provide high speed current differential unit protection. They are designed for overhead line and cable applications, interfacing readily with the longitudinal (end-end) communications channel between line terminals. The interface options support direct fiber optic or multiplexed digital links.
Each of the models offer resident subcycle distance protection to complement the powerful suite of main and backup protection. Full scheme, nine-zone distance protection is adopted from the class-leading MiCOMho P44. The product line becomes the standard in all HV, EHV and UHV line protection applications, duplicated where dual redundant main protection is demanded. Set any combination of differential, distance, overcurrent and reclosing, depending on the site needs. One universal relay type instead of two or more discrete models means reduced spares holding, less training, and lower cost.
The MiCOM Agile P54 is also suitable for the complex installation and feeders controlled by two circuit breakers such as breaker-and-a-half configurations with dual breaker autoreclose logic schemes with synchrocheck for both breakers.
Key benefits:
- A universal relay that reduces spare holding - apply as a current differential relay, a distance relay, or both
- Neutral differential boosts sensitivity of tripping for resistive earth faults, even for lines with heavy load-flow
- Transient biasing reduces CT knee point dimensioning by typically 25% compared to historical applications
- Differential protection adaptable to all different substation topologies: in-zone transformers and unequal line end CT ratios
- Multi-shot 1/3pole & 3pole autoreclosure with check synchronism - adaptive technology to detect fault arc extinction and accelerate the dead time or drive to lockout for persistent faults. Improves system stability whilst reducing OPEX.
Main characteristics:
- Comprehensive communication options including IEC 61850 Edition 2
- IEC 61850 redundant Ethernet protocols - RSTP, PRP or HSR
- IEC 61850 9-2LE redundant PRP Process bus protocol
- Fast subcycle distance protection with quadrilateral or mho zones and setting free power swing detection
- InterMiCOM64 for transmitting digital signals (24/32) through teleprotection communication links
- Advanced Cybersecurity including AAA, Radius, RBAC, and Syslog
Functional Block Diagram

ANSI ® Device Numbers and Functions
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P54 MiCOM 5th Generation
P54 Line-Differential with Distance IED Buy Now
MiCOM S1 Agile
Key benefits:
- Powerful, free of charge, PC toolsuite
- Optimum management of the installed base, structured as per the substation topology
- Intuitive and versatile interface with file management facilities
- Logical structure based on substation, voltage level and bay
- Version control and cross-checking facilities for IED settings
- Real-time measurement visualization – MiCOM S1 Agile extends to all MiCOM Agile IEDs - including P847 PMU and busbar schemes
Engineering Tool Suite
S1 Agile is the truly universal PC tool for MiCOM Agile relay, assemble all tools in a palette for simple entry, with intuitive navigation via fewer mouse-clicks. No-longer are separate tools required for redundant Ethernet configuration, phasor measurement unit commissioning, busbar scheme operational dashboards, programmable curve profiles or automatic disturbance record extraction – applications are embedded. MiCOM S1 Agile supports all existing MiCOM, K-Series and Modulex, including a utility for automatic conversion of setting files from previous generations of numerical relays like K-series and MiCOM P20 to the latest P40 Agile models.
To move to the future, with no loss of functionality, no loss of device support, and full compatibility with your installed base and system architecture – request a copy of S1 Agile with the contact form link below.

Key features in the MiCOM S1 family:
- GE Vernova’s integrated engineering tool that provides users with access to automation IED configuration and record data
- Integrated configuration and monitoring features
- Send and extract setting files
- Single Line Diagram creation with inbuilt editor
- Event and disturbance record extraction and analysis
MiCOM S1 Agile software request
To receive the MiCOM S1 Agile, please use our Contact form. This will also ensure that you are kept up-to-date with the latest enhancements, including updates and bug fixes.
Refurbishment Solutions - "If it's Blue Think to Renew"
GE Vernova’s latest P54 MiCOM 5th Generation models offer an ideal path to refurbish an older installed base of MiCOM P540 relays. Whether those older products were initially sold as GE VERNOVA or AREVA-branded products, newer models retain pin-pin refurbishment capability. Advantageously, users can benefit from the advancements made in protection, control, communications, hardware and cybersecurity that have taken place in the intervening years. The new P40 retains form, fit and function compatibility but delivers the latest platform and software ready for today’s environment, and for future-proofed application for the decades ahead.
LFCB and MITZ Replacement:
- GE Vernova’s P545/P546 relays and P590 interfaces fit directly into the space vacated by our legacy relays, offering a perfect functional match
- The 5th Generation has full compatibility of the Line Differential communications with all legacy MiCOM P540, allowing staged upgrade path.
- The same S1 Agile software supports the new MiCOM relay and the legacy P541/2/3/4/5/6
MiCOM P541/2/3/4/5/6 Relay Replacement:
- Form, fit and functional compatibility – the P54 fits in the same panel or rack space and offers the same features and Protection performance.
- Please contact us for assistance
Pin-Pin Upgrade Methodology:
- Take the order code (CORTEC) of the older relay being removed, typically a blue case relay
- Translate to today’s latest GE Vernova MiCOM model, adding Ethernet options if required
- Order the new P40 relay
- Extract settings and logic, use S1 Agile toolsuite to convert settings
- Detach the medium duty terminal blocks from old relay, leaving wiring attached / detach terminal blocks from the new.
- Carefully examine the terminal blocks to see that no physical damage has occurred since installation.
- Mount new relay. Old relay blocks fit straight onto the new relay - safer, less wiring to reconnect.
- It is recommended to apply rated current and voltage to the relay CT/VT inputs during secondary injection testing to check the continuity of the CT/VT terminal block connections to the relay.
- Download converted files
- Test, return circuit to service with only minutes of downtime
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