P40 Agile P14N, P14D, P94V
P40 Agile Feeder Management
The P14N non-directional feeder, P14D directional feeder and P94V voltage and frequency IEDs bring the design rigor and technology of transmission applications to the entire utility and industrial market. The footprints of both the device physical size and the lifecycle environmental impact have been minimized using state-of-the-art design, component, and process selection. Agile solutions from GE Vernova are ideal for new-build and retrofit alike.
P40 Agile P14N, P14D, P94V
P40 Agile Feeder Management
The P14N non-directional feeder, P14D directional feeder and P94V voltage and frequency IEDs bring the design rigor and technology of transmission applications to the entire utility and industrial market. The footprints of both the device physical size and the lifecycle environmental impact have been minimized using state-of-the-art design, component, and process selection. Agile solutions from GE Vernova are ideal for new-build and retrofit alike.
The P40 Agile family delivers extensive protection, control and communications capabilities. Design attention has ensured that performance, sensitivity, customization and flexibility are delivered in a way that minimizes configuration and commissioning effort. The devices are configured in software with few order code variants, providing standardization that reduces the risk of mis-ordering, enabling easy stocking and reducing spares holding inventory.
Intelligent dependencies on settings declutter the menu, hiding any un-needed settings and/or disabled elements based on the configuration. Default applications are pre-loaded and a simple configuration column readies the product for application from a single touchpoint. Overall, the need to navigate a list of settings is reduced by approximately 80% - you only see what you need to.
The draw-out design permits fast extraction and insertion of the device active part, with inherent safety features to minimize any risks associated with open-circuit CTs. The relay PCBAs (printed circuit boards) have harsh environmental coating as standard, to shield from contaminants such as moisture, salt mist and atmospheric pollution, extending operational life.
Two variants are available within the P40 Agile range:

Scalable version
Supporting 20TE (4 inch), 30TE (6 inch) and 40TE (8 inch) case widths, with MIDOS ring lug terminals
The Scalable version is well-suited to refurbishment applications where legacy 4U rack relays are removed. It also offers pin-to-pin refurbishment of K-series relays. The scalable version has great synergy with GE Vernova’s MiCOM P40 range, with settings, logic, M4 ring lugs and the PC toolsuite being common – lessening training needs. Downed conductor (Hi-Z), transient ground fault and PWH wattmetric functions provide advanced functionality. The scalable application is identified as design suffix (variant) ‘A’.

Enhanced Compact version
20TE (4 inch) case, with shallow depth of less than 160mm behind panels and pin terminal I/O
P40 Agile Enhanced is suited to shallow-depth installations at new sites or as a refurbishment of induction disk IDMT relays. With Binary I/O counts of up to 11i + 11o/14i + 9o, Ethernet connectivity, a sample rate of 64 samples/cycle allowing for higher harmonics and THD measurement, and linked protection elements offering enhanced protection for networks with connected renewable generation, the P40 Agile Enhanced is a versatile solution for feeder protection & control. The enhanced compact range is identified as design suffix (variant) ‘E’.
Enhanced Compact
P40 Agile Enhanced is a compact feeder and voltage relay platform delivering highly-adaptable protection and control. Fast overcurrent, ground fault, voltage and frequency elements form the central core of performance. Advanced functionality includes programmable logic and flexible configuration capabilities, plus an extensive suite of communication protocols. Switchable communication protocols are supported for ease of integration into new or existing SCADA/DCS systems. The hardware is standardized, providing a universal power supply, multi-range inputs/outputs, and CT/VTs, to reduce order code variants and stocking / spares inventories.
P40 Agile Enhanced offers power quality monitoring including harmonic detection and recording with a sampling rate of 64 samples/cycle, fast protection execution, data-logging, oscillography and events capture. This enables operators to pinpoint issues quickly, ensuring service reliability and availability.
With a 20TE (4”) withdrawable case, shallow depth, and high density I/O, panel design is simplified and more economical. P40 Agile Enhanced natively supports IEC 61850 Edition 2 and offers a single CID settings file for faster substation engineering. It also supports advanced cybersecurity features including RBAC (role-based access control) and Syslog, offering defense against threats and full traceability of user actions.
Embedded suite of serial and Ethernet protocols including IEC 61850 Ed. 2, IEC62439 (PRP/HSR), Modbus RTU, Modbus TCP, IEC 60870-5-103, DNP 3.0 serial and DNP 3.0 Ethernet protocols facilitate ease of integration to legacy and greenfield systems. Choice of copper or fiber Ethernet interface available to fit customer needs.
Key features & benefits of this range include:
- Compact design for power distribution and industry applications, ideal for on-switchgear installation
- Draw-out construction for simplified testing, commissioning and maintenance
- High I/O density - up to 11 inputs / 11 outputs or 14 inputs / 9 outputs - in a case as small as 20TE (4 inch) width x 155mm depth
- Redundant Ethernet communication (PRP/HSR) ensuring uninterrupted data exchange
- CyberSentry™ Advanced Security, including AAA, role-based access control and Syslog
- Single setting file for relay configuration – fast set-up, simple as-installed record, full traceability
- Faster response to faults limits arcing energy and the duration of touch/step potential rise
- Uptime - condition monitoring of the relay and the entire primary equipment bay/cell
- Monitors renewables – harmonics imposed on the grid with THD measured up to the 21st order
- Extensive recording - 2048 events, 25 fault records, disturbance recording at up to 128 samples/cycle
- Accurate IEEE® 1588 (PTP), IRIG-B and SNTP time synchronization
- Precise fault location aids dispatching of troubleshooting crews
- Harsh environment coating as standard
- Ecodesign with documented Product Environmental Profile (PEP)
- Designed with an IEC62443-4-1:2018 certified secure development lifecycle process
P40 Enhanced Explorer
P14D Functional Block Diagram

ANSI® Device Numbers and Functions
Device Number | Function |
---|---|
21BL | Load encroachment supervision (Load blinders) |
24 | Volts per Hertz |
25 | Check Synchronising |
27 | Phase and Line Undervoltage |
27V | Positive Suquence Undervoltage |
27Q | UV Reactive Power |
27T | Timed Undervoltage |
32 | Phase Directional Power |
32N | Wattmetric Ground Fault |
37 | Undercurrent |
46 | Negative Sequence Overcurrent |
47 | Negative Sequence Overvoltage |
49 | Thermal Overload |
50/27 | Switch-on to Fault |
50 | Phase Definitive Time Overcurrent |
51 | Phase Inverse-Time Overcurrent |
Device Number | Function |
---|---|
52 | Breaker and Isolator Control |
52PD | Pole Discrepancy |
55 | Power Factor |
59 | Phase and Line Overvoltage |
59V | Positive Sequence Overvoltage |
67 | Directional Phase Overcurrent |
68 | Inrush Blocking |
79 | Autoreclose |
86 | Latching/Lockout Contacts |
21FL | Fault Locator |
46BC | Broken Conductor |
50BF | CB Failure |
50N/G | Neutral/Ground Definitive Time Overcurrent |
51N/G | Neutral/Ground IDMT Overcurrent |
SEF | Sensitive Earth Fault |
51R | Voltage Restrained Overcurrent |
Device Number | Function |
---|---|
51V | Voltage Controlled Overcurrent |
67_2 | Directional Negative Sequence Overcurrent |
59N | Neutral Voltage Displacement |
67N | Directional Neutral/Ground Overcurrent |
81df/dt | Rate of Change Frequency |
81O | Overfrequency |
81U | Underfrequency |
81V | Undervoltage Blocking |
87G | Restricted Ground Fault (REF) |
CLP | Cold Load Pick Up |
CTS/VTS | CT and VT Supervision |
DC Supply Monitoring | |
Fast underfrequency | |
Underfrequency Restoration | |
TGFD | Transient Ground Fault Detection |
THD | Hamonic Measurement/Protection |
YN | Neutral Admittance |
Simulation & Testing
To aid commissioning, a simulation feature is provided to test the relay’s functionality and response to programmed conditions, without the need of external AC voltage and current inputs. When placed in simulation mode, the relay suspends reading actual AC inputs, generates samples to represent the programmed phasors, and loads these samples into the memory to be processed by the relay. Normal (pre-fault), fault and post-fault conditions can be simulated to exercise a variety of relay features. Other test operations are also possible such as an LED lamp test for each color, contact input states and testing of output relays.
Application Model Selection
Model | Hardware Base | Intended Application | Case |
---|---|---|---|
P14NB | P14N | Non-directional feeder | 20TE |
P14NL | P14N | Non-directional feeder with autoreclose | 20TE |
P14DB | P14D | Directional feeder | 20TE |
P14DL | P14D | Advanced directional feeder with autoreclose and check synchronizing | 20TE |
P94VB | P94V | Voltage and frequency | 20TE |
P94VP | P94V | Voltage and frequency with autoreclose and check synchronizing | 20TE |
P14DZ | P14D | Advanced directional feeder with TGFD transient ground fault detection | 20TE |
Toolsuite
All aspects of P40 Agile Enhanced configuration can be managed using the tool suite software.
- IED Engineer
- System Integration
- Firmware & License
- Product Selection
- Data Model Management
- Tests & Commissioning
- Maintenance & Monitoring
- Network/Fault Analysis
Models with software version 05 are recommended to be configured with EnerVista Setup software for commonality with 8 series, and support migration from 350 and F650 models. Models with software version 03 and prior will continue to be supported by EnerVista Flex. Choose 03 software in case of P40 Agile Enhanced relay installed base and would like to continue with the same configuration tool.
Scalable Version
The P40 Agile scalable range (design suffix ‘A’) offers standardization and adaptability, addressing applications from distribution (as primary protection) to transmission (as back-up protection solution). A withdrawable design with 4”, 6”, and 8” case sizes for reduced space applications and MIDOS 4mm heavy-duty terminals for DC and AC terminations are central to its design. Advanced communications with support for up to two Ethernet ports, and optional redundancy protocols (RSTP or PRP/HSR) offer easy integration with substation automation systems for increased situational awareness. Scalable binary I/O and trip circuit supervision can coexist in a single package for demanding applications. Powerful graphical logic allows the user to customize the protection and control functions, program the opto-isolated binary inputs, relay outputs and LEDs.
Key features & benefits of this range include:
- Phase and ground protection, including sensitive earth settable down to 1mA pick-up
- Multi-stage independent protection elements, variety of curves in 4 setting groups
- High impedance fault, load encroachment, switch onto fault and fault locator
- Rate of change, full-scheme auto-reclose and synchrocheck, transient ground fault
- Scalable hardware, covering the MIDOS case 20 (4 inch), 30 (6”) and 40TE (8”) models
- Single Ethernet, PRP and HSR redundancy available
- Certified for feeder and high impedance busbar applications
- Two stage circuit breaker failure and breaker condition monitoring
- Switchgear supervision including CT/VT, DC supply, full Trip Circuit Supervision
- Switch control and status (up to 8), up to 2048 events and 15 disturbance records of 10.5 seconds each
P14D Functional Block Diagram

ANSI® Device Numbers & Functions
Device Number | Function |
---|---|
25 | Check Synchronizing |
27 | Phase and Line Undervoltage |
27V | Positive Sequence Undervoltage |
32 | Phase Directional Power |
37 | Undercurrent |
46 | Negative Sequence Overcurrent |
47 | Negative Sequence Overvoltage |
49 | Thermal Overload |
50/27 | Switch-on to Fault |
50 | Phase Definite Time Overcurrent |
51 | Phase Inverse-Time Overcurrent |
52 | Breaker and Isolator Control |
59 | Phase and Line Overvoltage |
59V | Positive Sequence Overvoltage |
Device Number | Function |
---|---|
dv/dt | Rate of Change of Voltage |
67 | Directional Phase Overcurrent |
68 | Inrush Blocking |
YN | Neutral Admittance |
79 | Autoreclose |
86 | Latching/Lockout Contacts |
87 | High-Impedance Busbar Differential |
21BL | Load Encroachment/Blinder |
21FL | Fault Locator |
32S | Sensitive Power |
46BC | Broken Conductor |
49SR | Silicon Rectifier Thermal |
50BF | CB Failure |
50N | Earth Fault Definite Time Overcurrent |
51N | Neutral/Ground IDMT Overcurrent |
SEF | Sensitive Earth Fault, I cos and I sin |
51R | Voltage Restrained Overcurrent |
Device Number | Function |
---|---|
51V | Voltage Controlled Overcurrent |
PSL | Programmable Logic |
CLP | Cold Load Pick Up |
59N | Neutral Voltage Displacement |
HIF | High-Impedance Downed Conductor |
64N | Restricted Earth Fault |
67N | Directional Neutral/Ground Overcurrent |
67W | Wattmetric Earth Fault (PWH) |
81df/dt | Rate of Change of Frequency |
81O | Overfrequency |
81R | Load Restoration |
81U | Underfrequency |
81V | Undervoltage Blocking |
CTS/VTS | CT and VT Supervision |
27/59DC | Battery Voltage Monitoring |
TGFD | Transient Ground Fault |
Advanced Communications
Two communication ports are standard: a rear port providing remote communications and a front USB port for substation operators for local device configuration and management.
Additionally up to two Ethernet ports can be ordered to achieve Ethernet communication redundancy.
Supported Communication Protocols Include:
- Courier / K-Bus
- Modbus
- IEC 60870-5-103
- DNP 3.0 (RS485 serial or Ethernet)
- IEC 61850 Ed.1 (100 Mbit/s Ethernet)
- IEC 61850 Ed. 2 and with IEC 60870-5-103 or Courier/K-Bus protocols available for concurrent serial connection
- Redundant Ethernet protocols PRP, HSR and RSTP also available with dual RJ45 or dual fiber media
Flexible Hardware Platform
- Space-saving 4U height and 20TE (4"), 30TE (6") or 40TE (8") case sizes
- Wide choice of opto-isolated binary inputs and output relays
- Binary inputs ESI 48-4 EB2 compliant – avoids spurious pickup from induction on field wiring
- High density I/O with up to 13 inputs & 12 outputs
- N/O (Form A) and N/C (Form B) watchdog contacts
- Field upgradeable to change the relay model avoiding costly hardware change
The front-panel interface allows direct IED interaction. Integrated user function keys and tri-color programmable LEDs provide a cost-effective solution for control and annunciation.

MiCOM S1 Agile Software Toolsuite
- Simplified configuration file creation and management, following the substation topology
- Ethernet and IEC 61850 configuration, including SCL import and export
- Programmable logic, menu text and IDMT curve profiles
- Setting conversion from MiCOM P20 series and K-series to P40 Agile Scalable version
- Events and disturbance record extraction and viewing

K-Series to P40 Agile Retrofit Upgrade
Many distribution utilities have a large installed base of 1st generation numerical K-series relays. A fast retrofit upgrade is required to replace with modern P40 Agile relays, in the minimum of downtime.
The new relays need zero or minimal configuration as the K-series “as-fitted” settings are extracted and automatically converted to match the P40 Agile Scalable relays. Configuration and injection testing is done away from the destination feeder, in a spare case. The device is pin-to-pin compatible with the legacy relay case which is left intact - no wiring is disturbed, and the feeder outage time is less than 5 minutes.
K Series - Legacy

CDG to P40 Agile retrofit
The Agilefit CDG retrofit solution** enables customers to replace their CDG overcurrent and/or earth fault relays with a P14N relay to obtain the latest benefits of P40 Agile. This retrofit kit provides a pre-wired cradle allowing the P14N relay to slide into the existing CDG relay case. The AgileFit CDG retrofit includes a P14NB or P14NZ relay equipped with standard earth CT or SEF CT input and an RS485 rear communications port. Use the Agilefit CDG retrofit kit model number and wiring diagram to identify which inputs and outputs are applicable to the delivered variant.
Key Benefits of Retrofit
- Complete protection, control and monitoring of feeders
- Wider setting range
- Front USB port for rapid access
- Harsh environmental coating as standard
- Easy installation – retrofit kit slides into existing CDG case
- Minimal impact on wiring, downtime merely minutes

MCGG, MIDOS and Modulex retrofit
GE Vernova’s application and services teams are adept in providing retrofit solutions for our installed base of former English Electric, AEI, Chamberlain & Hookham, GEC Measurements, FIR, AREVA and GE VERNOVA-branded devices. In particular, the 4U MIDOS case format of P40 Agile Enhanced assists in refurbishment of MCGG, METI, KCGG, KCEG, KCGU, KCEU, KVFG, KMPC, KAVS, KAVR100, KVTR, Modulex MX3 models and first-generation MiCOM. Retrofit of PBO and IAC relays is eased if the P40 Agile Enhanced (compact) model is selected for its shallow depth, extending less than 160mm behind the panel.
Recommended Products & services
Multilin F650
Cost effective protection, automation and control of distribution feeders
The Multilin F650 has been designed for the protection, control and automation of feeders or related applications. The Multilin F650 feeder protection relay provides high speed protection and control for feeder management and bay control applications, and comes with a large LCD and single line diagrams that can be built for bay monitoring and control for various feeder arrangements including ring-bus, double breaker or for breaker and half.
Multilin F650
Cost effective protection, automation and control of distribution feeders
The Multilin F650 has been designed for the protection, control and automation of feeders or related applications. The Multilin F650 feeder protection relay provides high speed protection and control for feeder management and bay control applications, and comes with a large LCD and single line diagrams that can be built for bay monitoring and control for various feeder arrangements including ring-bus, double breaker or for breaker and half.
Key Features
- Time, instantaneous & directional phase, neutral, ground and sensitive ground overcurrent
- Manual close with cold load pickup control, Forward Power and Directional Power Units
- Load encroachment supervision
- Wattmetric ground fault detection
- Positive and negative sequence based over/under voltage elements
- 2nd Harmonic restraint
- CT Supervision
- Four-shot autorecloser with synchronism check
- Trip circuit supervision, breaker control and
breaker failure - Frequency protection (rate of change and six
stages of under and over frequency) - Broken conductor and locked rotor
- Programmable digital inputs and outputs
- 6 Setting Groups

Protection & Control
The F650 feeder protection relay provides high speed protection and control for feeder management and bay control applications, including:
25 | Synchrocheck |
27/27X | Bus/Line Undervoltage |
32 | Sensitive Directional Power |
32FP | Forward Power |
32N | Wattmetric zero-sequence directional |
46 | Negative Sequence Time Overcurrent |
47 | Negative Sequence Voltage |
48 | Blocked Rotor |
49 | Thermal Image - overload protection |
50 BF | Breaker Failure |
50PH/PL | Phase Instantaneous Overcurrent (High/Low) |
50N | Neutral Instantaneous Overcurrent |
50G | Ground Instantaneous Overcurrent |
50SG | Sensitive Ground Instantaneous Overcurrent |
50IG | Isolated Ground Instantaneous Overcurrent |
51N | Neutral Time Overcurrent |
51G | Ground Time Overcurrent |
51SG | Sensitive Ground Time Overcurrent |
51PH/V | Voltage Restraint Phase Time Overcurrent |
51PL/V | |
59/59X | Bus/Line Overvoltage |
59NH/NL | Neutral Overvoltage - High/Low |
67P | Phase Directional Overcurrent |
67N | Neutral Directional Overcurrent |
67G | Ground Directional Overcurrent |
67SG | Sensitive Ground Directional Overcurrent |
79 | Autorecloser |
81 U/O | Under/Over Frequency Broken Conductor Detection |
81R | Frequency Rate of Change |
VTFF | VT Fuse Failure Detection |
Load Encroachment |
Key Features
- Fault locator, fault and event recorder
- Comprehensive breaker monitoring
- High resolution oscillography and Data Logger, with programmable sampling rate
- Metering: V, I, Hz, W, VA, PF
- Demand: Ia, Ib, Ic, Ig, Isg, I2, MW, MVA
- Breaker Arcing Current (I2t)
- Fault Locator
Monitoring & Metering
The F650 provides advanced monitoring and metering that includes:
Current Transformer Failure
In event of abnormal behaviour of the CT or a loss of phase the F650 detects a change in zero sequence current to initiate a CT failure event and an output that can be used to block critical protection functions. This feature can be inhibited either by zero sequence voltage, ground /sensitive ground current.
2nd harmonic inhibit
The F650 provides 2nd harmonic detection that can be used to block sensitive elements, especially during transformer energization. The setting can be based on any phase, any two phases, all three phases or an average of the 3 phases.
VT Fuse Failure
Use the VT Fuse Failure feature to issue an alarm and/or to block voltage driven protection functions that can operate incorrectly due to an abrupt partial or total voltage loss. This loss is caused by the voltage transformers secondary circuit protection fuse failure. Different methods are used to detect the different types of VT fuse failure.
Trip Circuit Monitoring
F650 can be used to monitor the integrity of both the breaker trip and closing coils and circuits. The supervision inputs monitor both the battery voltage level, while the outputs monitor the continuity of the trip and/or closing circuits, by applying a small current through the circuits.
Basic Metering
Ia, Ib, Ic, Ig, Isg, Va, Vb, Vc and Vx signals are available locally and remotely and can be stored in the oscillography record or data logger.
Event Recording and Oscillography
The F650 is capable of storing 479 or 512 (depending on the selected model) time-tagged events (1 ms tagging), to help with troubleshooting. The trigger point, the channels, and sampling rate of the oscillography files are user programmable features. Up to five seconds at maximum sample rate can be stored.
Advanced Communications
The F650 incorporates the industry-leading communication technologies making it one of the easiest and flexible feeder protection relays for use and integration into new and existing infrastructures. The F650 provides optional Parallel Redundancy Protocol (PRP), High Availability Seamless Ring (HSR) (IEC 62439-3) and also Rapid Spanning Tree Protocol (RSTP) (IEEE 802.1D) to increase network availability and reliability for critical applications.
The F650 includes up to three communication ports that operate simultaneously. Redundant ports are also available for special applications.
The F650 supports popular industry leading standard protocols enabling easy, direct integration into electrical SCADA and HMI systems. The protocols supported by the F650 include:
- IEC 61850 Edition 2
- DNP 3.0
- Modbus RTU
- Modbus TCP/IP
- IEC 60870-5-103 and IEC 60870-5-104
- PRP & HSR (IEC 62439-3)
- RSTP (IEEE 802.1D)
- IEEE 1588 (PTP) for time synchronization
The F650 provides integration with 61850 standard edition 2. IEC 61850 allows for the seamless connection of IEDs from multiple vendors. In addition to device interoperability, these protocols are designed to control the substation via a LAN instead of through discrete wiring to an RTU.
Example of redundant HSR and PRP Architecture
Redundancy protocols (PRP and HSR) can be used for various networking architectures including combined PRP/HSR topologies.

EnerVista Software
The EnerVista Suite is an industry-leading set of software programs that simplifies every aspect of using the F65 relay. The EnerVista suite provides all the tools to monitor the status of your the protected asset, maintain the relay, and integrate information measured by the F650 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the 650 Setup software included with every F650 relay, to carry out postmortem event analysis to ensure proper protection system operation.
The 650 Logic Configuration software is a powerful programming logic engine that provides the ability to create customized protection and control schemes thereby minimizing the need, and costs associated with auxiliary components and wiring.

Recommended Products & services
Multilin Agile
Compact Feeder Protection and Bay Controller
GE Vernova’s Multilin Agile Feeder Protection solution offers advanced protection, monitoring, and control for utilities, industrial plants, onshore and offshore renewable collectors, and more. Serving as primary or backup feeder protection, it is equipped with advanced communication options and extensive monitoring capabilities.
Multilin Agile
Compact Feeder Protection and Bay Controller
GE Vernova’s Multilin Agile Feeder Protection solution offers advanced protection, monitoring, and control for utilities, industrial plants, onshore and offshore renewable collectors, and more. Serving as primary or backup feeder protection, it is equipped with advanced communication options and extensive monitoring capabilities.
What is Multilin Agile?
Multilin Agile is a compact feeder protection and bay controller device with extensive protection, control, and communications capabilities. The design ensures that performance, sensitivity, customization, and flexibility are delivered along with minimized configuration and commissioning effort. The device is configured using software with few order code variants, providing standardization that mitigates the risk of mis-ordering, enables easy stocking, and reduces spare inventory.
Intuitive software and graphical display streamline and declutter the settings menu by hiding unnecessary elements. Default applications are pre-loaded and a simple configuration column readies the product for application from a single touchpoint for effective monitoring, communications, and troubleshooting.

The draw-out design permits fast extraction and insertion with inherent safety features to minimize risks associated with open-circuit CTs. The relay’s printed circuit boards have harsh environmental coating as the standard, to shield from contaminants such as moisture, salt mist, and atmospheric pollution, extending operational life.
Multilin Agile housed in a 30TE (6 inch) wide case supports integrated color graphical display. The device provides advanced functionality, including high-performance protection, extensive monitoring and control functions, redundant Ethernet communication, higher I/O density of up to 30 inputs / 25 outputs, and flexible configuration capabilities in a compact form factor and shallow depth of less than 155 mm behind panels.
In case a standard LCD text display is needed, please refer to P40 Agile Enhanced offering
Overview
Multilin Agile Feeder P14D Functional Block Diagram

ANSI® Device Numbers and Functions
Device Number | Function |
---|---|
21BL | Load encroachment supervision (Load blinders) |
24 | Volts per Hertz |
25 | Check Synchronising |
27 | Phase and Line Undervoltage |
27V | Positive Suquence Undervoltage |
27Q | UV Reactive Power |
27T | Timed Undervoltage |
32 | Phase Directional Power |
32N | Wattmetric Ground Fault |
37 | Undercurrent |
46 | Negative Sequence Overcurrent |
47 | Negative Sequence Overvoltage |
49 | Thermal Overload |
50/27 | Switch-on to Fault |
50 | Phase Definitive Time Overcurrent |
51 | Phase Inverse-Time Overcurrent |
Device Number | Function |
---|---|
52 | Breaker and Isolator Control |
52PD | Pole Discrepancy |
55 | Power Factor |
59 | Phase and Line Overvoltage |
59V | Positive Sequence Overvoltage |
67 | Directional Phase Overcurrent |
68 | Inrush Blocking |
79 | Autoreclose |
86 | Latching/Lockout Contacts |
21FL | Fault Locator |
46BC | Broken Conductor |
50BF | CB Failure |
50N/G | Neutral/Ground Definitive Time Overcurrent |
51N/G | Neutral/Ground IDMT Overcurrent |
SEF | Sensitive Earth Fault |
51R | Voltage Restrained Overcurrent |
Device Number | Function |
---|---|
51V | Voltage Controlled Overcurrent |
67_2 | Directional Negative Sequence Overcurrent |
59N | Neutral Voltage Displacement |
67N | Directional Neutral/Ground Overcurrent |
81df/dt | Rate of Change Frequency |
81O | Overfrequency |
81U | Underfrequency |
81V | Undervoltage Blocking |
87G | Restricted Ground Fault (REF) |
CLP | Cold Load Pick Up |
CTS/VTS | CT and VT Supervision |
DC Supply Monitoring | |
Fast underfrequency | |
Underfrequency Restoration | |
TGFD | Transient Ground Fault Detection |
THD | Hamonic Measurement/Protection |
YN | Neutral Admittance |
Advanced Communications
Three communication ports are standard: a rear serial port providing remote communications, a front USB port, and a rear Ethernet for device configuration and management.
Two additional Ethernet ports can be ordered to achieve Ethernet communication redundancy.
Supported Communication Protocols Include:
- Modbus (RS485 serial or Ethernet)
- IEC 60870-5-103
- DNP 3.0 (RS485 serial or Ethernet)
- IEC 61850 Ed. 2 with concurrent serial connection
- Redundant Ethernet protocols PRP, HSR, and failover also available with dual RJ45 or dual fiber media
Flexible Hardware
- Space-saving 4U height with 6" (30TE) case size
- Wide choice of opto-isolated binary inputs and output relays
- Binary inputs ESI 48-4 EB2 compliant – avoids spurious pickup from induction on field wiring
- High density I/Os in various combinations depending on case size option
- Ungrouped binary inputs for trip circuit supervision
- Field upgradeable, avoiding costly hardware changes
- 6" (30TE) models can accommodate:
- 1 x RS485/IRIG-B interface
- Up to 3 x RJ45/fiber optic ports for single and redundant Ethernet plus additional engineering access
- From 11 to 30 binary inputs, and 9 to 25 relay outputs, depending on the order code
Simulation & Testing
To aid commissioning, a simulation feature is provided to test the relay’s functionality and response to programmed conditions, without the need for external AC voltage and current inputs. When placed in simulation mode, the relay suspends reading actual AC inputs, generates samples to represent the programmed phasors, and loads these samples into the memory to be processed by the relay. Normal (pre-fault), fault, and post-fault conditions can be simulated to exercise a variety of relay features. Other test operations, such as an LED lamp testing for each color, contact input states, and testing of output relays, are also possible.
Application Model Selection
Model | Hardware Base | Intended Application | Case Model |
---|---|---|---|
P14NB | P14N | Non-directional feeder | 30TE |
P14NL | P14N | Non-directional feeder with autoreclose | 30TE |
P14NZ | P14N | Non-directional feeder with autoreclose and HIF** downed conductor | 20TE/30TE |
P14DB | P14D | Directional feeder | 30TE |
P14DL | P14D | Advanced directional feeder with autoreclose and check synchronising | 30TE |
P14DZ | P14D | Advanced directional feeder with TGFD transient ground fault detection | 30TE |
P94VB | P94V | Voltage and frequency | 30TE |
P94VP | P94V | Voltage and frequency with autoreclose and check synchronising | 30TE |

Intuitive User interface.
The front HMI hosts a fully graphical color screen. The front panel supports open, close, local/remote, and direct function key access, facilitating the control of connected switchgear and managing up to six controllable devices. These replace traditional hardwired control scheme switches and annunciation, saving on engineering time and wiring costs.
Sixteen tricolor LED lamps are available and freely configurable, in addition to four fixed-function LEDs that provide a cost-effective solution for annunciation.
Multiple languages are supported with easy switching between English and an additional language on the local display without uploading new firmware.
A USB front port allows ready access by field personnel laptops.
Intuitive Graphical Display

Phasor view for effective monitoring, commissioning & troubleshooting

Extensive recording for in-depth post-fault analysis

Accurate, real-time display of AC analog measurements

Enhanced bay visualization & control aided by single line diagram display
Recommended Products & services
Multilin 850
Innovative feeder and bay controller in one box
The Multilin™ 850 relay is a member of the Multilin 8 Series protective relay platform and has been designed for the management, protection and control of feeder applications. The Multilin 850 is an integrated, one box solution, used to provide comprehensive protection, control and monitoring of underground and overhead single or dual feeders in industrial and utility power networks.
Multilin 850
Innovative feeder and bay controller in one box
The Multilin™ 850 relay is a member of the Multilin 8 Series protective relay platform and has been designed for the management, protection and control of feeder applications. The Multilin 850 is an integrated, one box solution, used to provide comprehensive protection, control and monitoring of underground and overhead single or dual feeders in industrial and utility power networks.
Multilin 850 Overview
The Multilin 850 is an advanced feeder protection relay that provides high performance protection, high density I/O, extensive programmable logic and flexible configuration capabilities. With protection and control logic, the 850 allows for simplified coordination with upstream and downstream disconnect devices. The Multilin 850 supports both industrial and distribution utility feeders. Dual feeders (850D) and multi feeder (850P) in electrical applications are also supported.
As part of the 8 Series platform of relays, the Multilin 850 shares the advanced communications and cyber security features and EnerVista software suite that is common to the platform. Learn more about the Multilin 8 Series platform.
Comprehensive feeder protection
- One box solution with advanced logic and configuration flexibility to provide comprehensive primary or backup protection, control and monitoring for 2 feeders or for feeders with 2 sets of voltage inputs.
- breaker diagnostics with high-end fault and disturbance recording
- Integrated arc flash detection using light sensors supervised by overcurrent to reduce incident energy and equipment damage.
- High-end cyber security such as AAA, Radius, RBAC and Syslog, enabling NERC CIP requirements.
- Draw-out design simplifies testing, commissioning and maintenance, increasing process uptime.
- Optional Wi-Fi connectivity minimizes system configuration and provides safe relay programming and diagnostic retrieval.
- Patented environmental monitoring, providing visibility to changes in environmental conditions that can affect relay life.
Multilin 850 feeder protection relay functional block diagram

ANSI Device Numbers & Functions
Device Number | Function |
---|---|
21 YN | YN Neutral Admittance |
25 | Synchrocheck |
27P | Phase Undervoltage |
27Q | UV Reactive Power |
27T | Timed Undervoltage Protection |
27X | Auxiliary Undervoltage |
32 | Directional Power |
32N | Wattmetric Ground Fault (Wattmetric zero sequence directional) |
37 | Undercurrent |
49 | Thermal Overload |
50BF | Breaker Failure |
50G | Ground Instantaneous Overcurrent |
50SG | Sensitive Ground Instantaneous Overcurrent |
50N | Neutral Instantaneous Overcurrent |
Device Number | Function |
---|---|
50P | Phase Instantaneous Overcurrent |
50_2 | Negative Sequence Instantaneous Overcurrent |
51G | Ground Time Overcurrent |
51SG | Sensitive Ground Time Overcurrent |
51N | Neutral Time Overcurrent |
51P | Phase Time Overcurrent |
51_2 | Negative Sequence Time Overcurrent |
52 | AC Circuit Breaker |
55 | Power Factor |
59N | Neutral Overvoltage |
59P | Phase Overvoltage |
59X | Auxiliary Overvoltage |
59_2 | Negative Sequence Overvoltage |
67G | Ground Directional Element |
Device Number | Function |
---|---|
67SG | Sensitive Ground Directional Element |
67N | Neutral Directional Element |
67P | Phase Directional Element |
67_2 | Negative Sequence Directional Element |
79 | Automatic Recloser |
81O | Overfrequency |
81U | Underfrequency |
81R | Frequency Rate of Change |
87G | Restricted Ground Fault (RGF) |
AFP | Arc Flash Protection |
CLP | Cold Load Pickup |
I1/12 | Broken Conductor |
MCB | Manual Close Blocking |
SOTF | Switch Onto Fault |
VTFF | Voltage Transformer Fuse Failure |
Dual Feeder Protection
The Multilin 850D is designed for high performance protection, control and monitoring of up to two distribution feeders, and provides all the functionalities required for a distribution feeder including SOFT, under current and pole discordance. Extensive programmable logic and flexible configuration capabilities along with sequence coordination enable the 850D to comply with system coordination requirements.
850D key features
- Up to 2 feeders within one relay
- Dual voltage banks with single feeder
- High-end cyber security such as AAA, Radius, RBAC, and Syslog helps enable NERC® CIP requirements
- Draw-out design simplifies testing, commissioning and maintenance, thereby increasing process uptime
- Wi-Fi connectivity minimizes system configuration and provides safe relay programming and diagnostic retrieval
- Relay environmental diagnostic information helps reduce system downtime
Multilin 850D functional block diagram

ANSI Device Numbers & Functions
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* Only for 850D |
Multi Feeder Protection
Manufacturing for the 850P has been discontinued. As an alternative, please refer to the 850D
The Multilin 850P relay has been designed for the management, protection and control of multi feeder applications supporting both traditional voltage inputs as well as Low Energy Analog (LEA) inputs. A maximum of 4 feeders can be supported by the 850P.
The 850P addresses the following customer challenges:
|
|
Key benefits
- Reduce number of IEDs in the system, resulting in lower capital and O&M costs, and smaller battery sizing
- Mean time to repair less than 15mins with field swappable PSU, draw out construction and ready to consume service reports
- Extend asset life with built-in environmental monitoring, battery and advanced breaker monitoring
- Same device-based solution (850D/P) reduces training needs, standardizes SKUs and harmonizes the user and operational experience
Multilin 850P functional block diagram

ANSI Device Numbers & Functions
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Note: Ground option is not available for 4 sets of phase protection. |


Monitoring & Diagnostics
The Multilin 850 includes high accuracy metering and recording for all AC signals. Voltage, current, and power metering are built into the relay as a standard feature. Current and voltage parameters are available as total RMS magnitude, and as fundamental frequency magnitude and angle.
Breaker Health Monitoring
The breaker is monitored by the relay not only for detection of breaker failure, but also for the overall “breaker health” which includes:
- Breaker close and breaker open times
- Trip circuit monitoring
- Spring charging time
- Per-phase arcing current
- Trip counters

Data Logging
The Multilin 850 delivers comprehensive data logging providing the recording of 16 analog values selected from any analog values calculated by the relay. This data capture flexibility allows the operator to measure power factor or reactive power flow (for example), for several hours or even days, enabling detailed analysis and corrective action to be taken.
Environmental Monitoring
The 8 Series built-in environmental awareness feature (patent “Systems and methods for predicting maintenance of intelligent electronic devices”) collects the histograms of each operating condition from the point the device is put into service. Monitored environmental conditions include temperature, humidity and transient voltage. These parameters are now available as FlexElement to output alarms in case of limits reached due to Temperature, humidity or surges.
Trip and Close Circuit Monitoring
The 850 relay provides Trip and Close Circuit Monitoring elements
Breaker Arcing Current
This element calculates an estimate of the per-phase wear on the breaker contacts by measuring and integrating the current squared passing through the breaker contacts as an arc. When the threshold is exceeded in any phase, the relay can set an output operand and set an alarm.
Monitoring & Diagnostics
The Multilin 850 includes high accuracy metering and recording for all AC signals. Voltage, current, and power metering are built into the relay as a standard feature. Current and voltage parameters are available as total RMS magnitude, and as fundamental frequency magnitude and angle.

Breaker Health Monitoring
The breaker is monitored by the relay not only for detection of breaker failure, but also for the overall “breaker health” which includes:
- Breaker close and breaker open times
- Trip circuit monitoring
- Spring charging time
- Per-phase arcing current
- Trip counters
Data Logging
The Multilin 850 delivers comprehensive data logging providing the recording of 16 analog values selected from any analog values calculated by the relay. This data capture flexibility allows the operator to measure power factor or reactive power flow (for example), for several hours or even days, enabling detailed analysis and corrective action to be taken.

Environmental Monitoring
The 8 Series built-in environmental awareness feature (patent “Systems and methods for predicting maintenance of intelligent electronic devices”) collects the histograms of each operating condition from the point the device is put into service. Monitored environmental conditions include temperature, humidity and transient voltage. These parameters are now available as FlexElement to output alarms in case of limits reached due to Temperature, humidity or surges.
Trip and Close Circuit Monitoring
The 850 relay provides Trip and Close Circuit Monitoring elements
Breaker Arcing Current
This element calculates an estimate of the per-phase wear on the breaker contacts by measuring and integrating the current squared passing through the breaker contacts as an arc. When the threshold is exceeded in any phase, the relay can set an output operand and set an alarm.
8 Series Retrofit Kit
Retrofit Existing SR 735 or SR 750/760 Devices to the Multilin 850 in Minutes
Traditionally, retrofitting an existing relay has been a challenging, time consuming task often requiring re-engineering, new drawings, panel modifications, re-wiring and re-testing.
The 8 Series Retrofit Kit provides a quick, 3-step solution to upgrade previously installed SR 735 or SR 750/760 Devices. With the new 8 Series Retrofit Kit users are able to install the 850 Feeder Management System without modifying existing cutouts and wiring, and without any drawing changes or re-engineering.
Buy 750/760 to 850 Retrofit Kit
Easy 3-Step Process to Upgrade in as Fast as 21 Minutes

EnerVista 8 Series Setup Software provides automated setting file conversion. Once completed, a graphical report is provided to verify and call out any settings that need attention.

Simply remove the terminal blocks and then remove the SR chassis from the panel. No need to disconnect any of the field wiring.

Insert the new 8 Series Retrofit chassis into the switchgear and simply plug-in the old terminal blocks - there is no need to make any cut-out modifications or push and pull cables.
Recommended Products & services
Multilin F35
Feeder Protection System
The F35, a member of the UR Family of protection relays, provides cost-effective feeder protection, control and metering for up to five feeders with busbar voltage measurement, or six feeders without busbar voltage in one integrated package. Use the F35 as a stand-alone device or as a component of an automated substation control system.
Multilin F35
Feeder Protection System
The F35, a member of the UR Family of protection relays, provides cost-effective feeder protection, control and metering for up to five feeders with busbar voltage measurement, or six feeders without busbar voltage in one integrated package. Use the F35 as a stand-alone device or as a component of an automated substation control system.

New and Enhanced Communication Capabilities
- New process bus module supports IEC 61869 sample values, PTP master capabilities and SV switching (FW 7.9x)
- New UR process bus modules supporting IEC61850-9-2LE Merging Units (FW 7.8x) Module Training available here
- Support switchable IEC 61850 Ed. 1 and Ed. 2 and redundant SNTP (FW 7.7x)
- New UR front panel with integrated 7” color, graphical display - providing operators with enhanced situational awareness (FW 7.6x)
- High density I/O module supporting up to 120 inputs or up to 72 contact outputs – eliminating the need for additional discrete devices (FW 7.6x)

Cyber Security - CyberSentry UR (FW v7.xx)
CyberSentryTM enables UR devices to deliver full cyber security features that help customers to comply with cyber security requirements (NERC CIP, IEEE 1686, IEC 62443, etc):
- Secured firmware upgrade: FW file includes hash code that enables authentication prior to being used for upgrading UR Relay (FW 7.9x)

Fully Compatible with IEC 61850-9-2LE or IEC61869 process bus schemes:
- Can connect to up to 8 merging units over -9-2LE or 61869
- Supports PRP, HSR, dual HSR and point-to-point process bus topology
- Provides support for GE Vernova’s IEC 61850 HardFiber Process Bus Solution

Extended Oscillography Records (FW v7.xx)
- Increased number of digital and analog channels (FW 7.90)
- Supports IEEE C37.111-1999/2013, IEC 60255-24 Ed 2.0 COMTRADE 2013 standard (FW v7.40)
- Configurable events allow for records of up to 45s at 64 samples per cycle

New and Enhanced Protection and Control Functionality
- New TGFD and Inrush detection elements (FW 8.0)
- Expanded Bay Controller Capabilities – providing a one box solution (FW 7.6x)
Key Features
- Instantaneous and time phase overcurrent protection
- Thermal overload, instantaneous and time ground/neutral overcurrent protection, wattmetric ground fault directional
- Transient ground fault detection (TGFD)
- Dedicated harmonic inrush detection
- Neutral and auxiliary overvoltage
- Phase and auxiliary undervoltage
- Underfrequency
- Four-shot automatic reclosers for up to six breakers
- Built-in selector switch
Protection & Control
The F35 feeder protection system provides feeder protection, control, monitoring and metering in an integrated, economical, and compact package. As part of the Universal Relay (UR) Family, the F35 provides cost-effective solutions and features high performance protection, expandable I/O options, integrated monitoring and metering, high-speed communications, and extensive programming and configuration capabilities. The F35 can be configured to protect up to six feeders or protect up to five feeders when bus voltage measurement is required. It also provides fast and deterministic execution of programmable logic necessary for substation automation applications. Graphical programming tools (Viewpoint Engineer), supported by a library of logic components, make the F35 simple to use and configure.
A sensitive wattmetric zero-sequence directional function can be used on isolated or resonant (Petersen coil) grounded, low-resistance grounded and solidly grounded systems to detect ground faults. This function determines the presence and direction of ground faults by measuring the value and direction of zero-sequence power. This flexible element responds to power derived from zero-sequence voltage and current in a direction specified by the element characteristic angle. Power can be selected as active, reactive, or apparent. Therefore, the element may be used to sense either forward or reverse ground.
The F35 has a wide range of protection elements that have many years of proven field experience.
Functional Block Diagram

ANSI® Device Numbers & Functions
Device Number | Function |
---|---|
27P | Phase Undervoltage |
27X | Auxiliary Undervoltage |
32N | Wattmettric Zero-Sequence Directional |
49 | Thermal overload protection |
50DD | Disturbance detector |
50G | Ground Instantaneous Overcurrent |
50N | Neutral Instantaneous Overcurrent |
Device Number | Function |
---|---|
50P | Phase Instantaneous Overcurrent |
50_2 | Negative Sequence Instantaneous Overcurrent |
51G | Ground Time Overcurrent |
51N | Neutral Time Overcurrent |
51P | Phase Time Overcurrent |
51_2 | Negative-sequence time overcurrent |
52 | AC circuit breaker |
Device Number | Function |
---|---|
59N | Neutral Overvoltage |
59P | Phase overvoltage |
59X | Auxiliary Overvoltage |
79 | Automatic Recloser |
81U | Under Frequency |
TGFD | Transient ground fault detection |
TGFD | Harmonic/Inrush detection |
Key Features
- Metering - current, voltage, power, energy, frequency and harmonics
- Oscillography – analog and digital parameters at 64 samples/cycle
- Event Recorder - 1024 time tagged events with 0.5ms scan of digital inputs
- Data Logger - 16 channels with sampling rate up to 1 sample / cycle
- Setting for security audit trails for tracking changes to F35 configurations
Monitoring & Diagnostics
The F35 includes high accuracy metering and recording for all AC signals. Voltage, current, and power metering are built into the relay as a standard feature. Current and voltage parameters are available as total RMS magnitude, and as fundamental frequency magnitude and angle.

Advanced Automation
The F35 incorporates advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average line relay. The F35 integrates seamlessly with other UR relays for complete system protection, including unit and auxiliary transformers, and balance of plant protection.

Key Features
Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P & C life cycle costs
- Three independent 100Mbps Ethernet ports enable purpose specific LAN support that eliminates latency effect of heavy traffic protocols on mission critical communication services
- Embedded IEEE 1588 time-synch protocol support eliminates dedicated IRIG-B wiring requirements for IEDs
- Direct I/O secures high-speed exchange of binary data between URs
- Increase network availability by reducing failover time to zero through IEC62439-3 PRP, HSR or dual HSR support
Advanced Communications
The F35 provides advanced communications technologies for remote data and engineering access, making it the easiest and most flexible feeder protection relay to use and integrate into new and existing infrastructures. Direct support for fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available three independent and redundant Ethernet options provide the means to create fault tolerant communication architectures in an easy, cost-effective manner.
The F35 supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.
- IEC 61850-9-2LE networked or IEC61850-9-2 Hardfiber process bus support
- DNP 3.0 (serial & TCP/IP)
- Ethernet Global Data (EGD)
- IEC 60870-5-103 and IEC 60870-5-104
- Modbus RTU, Modbus TCP/IP
- HTTP, TFTP, SFTP and MMS file transfer
- Redundant SNTP and IEEE 1588 for time synchronization
- PRP as per IEC 62439-3
- Supports Routable GOOSE (R-GOOSE)
Interoperability with Enbedded IEC 61850
Use the F35 with integrated IEC 61850 to lower costs associated with multi-feeder protection, control and automation. GE Vernova’s leadership in IEC 61850 comes from thousands of installed devices and follows on years of development experience with UCA 2.0.

The F35’s IEC 61850 Process Bus module is designed to interface with the Multilin HardFiber System, allowing bi-directional IEC 61850 fiber optic communications. The HardFiber System is designed to integrate seamlessly with existing Universal Relay applications, including protection functions, FlexLogic, metering and communications.
Learn More
The F35 can also connect to GE Vernova MU320 or third-party merging units using standard IEC 61869 or IEC 61850-9-2LE communication protocols.
Cyber Security - CyberSentry™ UR (FW v7.4xx)
CyberSentry enables UR devices to deliver full cyber security features that help customers to comply with NERC CIP and NITIR 7628 cyber security requirements through supporting the following core features:
Secure FW upgrade
UR FW files v7.9 and up now include a hash code that allows for authentication prior to being used for upgrading UR devices.
Password Complexity
Supporting up to 20 alpha- numeric or special characters, UR passwords exceed NERC CIP requirements for password complexity. Individual passwords per role are available.
AAA Server Support (Radius)
Enables integration with centrally managed authentication and accounting of all user activities and uses modern industry best practices and standards that meet and exceed NERC CIP requirements for authentication and password management.
Role Based Access Control (RBAC)
Efficiently administrate users and roles within UR devices. The new and advanced access functions allow users to configure up to five roles for up to eight configurable users with independent passwords. The standard “Remote Authentication Dial In User Service” (Radius) is used for authentication.
Event Recorder (Syslog for SEM)
Capture all cyber security related events within a SOE element (login, logout, invalid password attempts, remote/local access, user in session, settings change, FW update, etc), and then serve and classify data by security level using standard Syslog data format. This enables UR devices integration with established SEM (Security Event Management) systems.
EnerVista™ Software
The EnerVista™ suite is an industry-leading set of software programs that simplifies every aspect of using the F35 relay. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate information measured by the F35 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the UR setup software included with every UR relay, to carry out postmortem event analysis and ensure proper protection system operation.
Learn More

Recommended Products & services
Multilin F60
Feeder Protection System
The F60, a member of the UR Family of protection relays, provides high performance feeder protection, control, monitoring and metering in an integrated, economical, and compact package. The F60 includes GE Vernova Multilin’s unique high-impedance fault detection for fast and reliable detection of downed conductors.
Multilin F60
Feeder Protection System
The F60, a member of the UR Family of protection relays, provides high performance feeder protection, control, monitoring and metering in an integrated, economical, and compact package. The F60 includes GE Vernova Multilin’s unique high-impedance fault detection for fast and reliable detection of downed conductors.

New and Enhanced Communication Capabilities
- New process bus module supports IEC 61869 sample values, PTP master capabilities and SV switching (FW 7.9x)
- New UR process bus modules supporting IEC61850-9-2LE Merging Units (FW 7.8x) Module Training available here
- Support switchable IEC 61850 Ed. 1 and Ed. 2 and redundant SNTP (FW 7.7x)
- New UR front panel with integrated 7” color, graphical display - providing operators with enhanced situational awareness (FW 7.6x)
- High density I/O module supporting up to 120 inputs or up to 72 contact outputs – eliminating the need for additional discrete devices (FW 7.6x)

Cyber Security - CyberSentry UR (FW v7.xx)
CyberSentryTM enables UR devices to deliver full cyber security features that help customers to comply with cyber security requirements (NERC CIP, IEEE 1686, IEC 62443, etc):
- Secured firmware upgrade: FW file includes hash code that enables authentication prior to being used for upgrading UR Relay (FW 7.9x)

Fully Compatible with IEC 61850-9-2LE or IEC61869 process bus schemes:
- Can connect to up to 8 merging units over -9-2LE or 61869
- Supports PRP, HSR, dual HSR and point-to-point process bus topology
- Provides support for GE Vernova’s IEC 61850 HardFiber Process Bus Solution

Extended Oscillography Records (FW v7.xx)
- Increased number of digital and analog channels (FW 7.90)
- Supports IEEE C37.111-1999/2013, IEC 60255-24 Ed 2.0 COMTRADE 2013 standard (FW v7.40)
- Configurable events allow for records of up to 45s at 64 samples per cycle

New and Enhanced Protection and Control Functionality
- New TGFD and Inrush detection elements (FW 8.0)
- Expanded Bay Controller Capabilities – providing a one box solution (FW 7.6x)
Key Features
- High-impedance fault detection (downed conductor detection)
- Multiple phase, ground, neutral and negative sequence instantaneous and timed overcurrent elements
- Phase and negative sequence directional overcurrent, Neutral directional with enhanced polarity criteria, broken conductor and thermal overload
- Load encroachment supervision
- Wattmetric ground fault detection
- Transient ground fault detection (TGFD)
- Incipient cable fault detection
- Four-shot autorecloser with synchronism check
- Breaker control and breaker failure
- Abnormal frequency protection (rate of change, under and over frequency)
- Restricted Ground Fault (RGF)
- Dedicated harmonic/inrush detection
Protection & Control
The F60 feeder protection system provides feeder protection, control, monitoring and metering in an integrated, economical, and compact package. As part of the Universal Relay (UR) Family, the F60 features high performance protection, expandable I/O options, integrated monitoring and metering, high-speed communications, and extensive programming and configuration capabilities. The F60 incorporates a unique and matured algorithm to detect high-impedance faults such as downed conductor detection. It also provides fast and deterministic execution of programmable logic necessary for substation automation applications. Graphical programming tools (Viewpoint Engineer), supported by a library of logic components, make the F60 simple to use and configure. The F60 has a wide range of protection elements that have many years of proven field experience.
Functional Block Diagram

ANSI® Device Numbers & Functions
|
|
|
Key Features
- Metering - current, voltage, power, energy, frequency
- Oscillography – analog and digital parameters at 64 samples/cycle
- Event Recorder - 1024 time tagged events with 0.5ms scan of digital inputs
- Data Logger - 16 channels with sampling rate up to 1 sample / cycle
- Setting for security audit trails for tracking changes to D30 configurations
Monitoring & Diagnostics

Advanced Automation
The D30 incorporates advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average line protection relay used for subtransmission. The D30 integrates seamlessly with other UR relays for complete system protection.

Key Features
Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P & C life cycle costs
- Three independent 100Mbps Ethernet ports enable purpose specific LAN support that eliminates latency effect of heavy traffic protocols on mission critical communication services
- Embedded IEEE 1588 time-synch protocol support eliminates dedicated IRIG-B wiring requirements for IEDs
- Direct I/O secures high-speed exchange of binary data between URs
- Increase network availability by reducing failover time to zero through IEC62439-3 PRP, HSR or dual HSR support
Advanced Communications
The F60 provides advanced communications technologies for remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. Direct support for fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available three independent and redundant Ethernet options provide the means to create fault tolerant communication architectures in an easy, cost-effective manner.
The F60 supports the most popular industry standard protocols enabling easy, direct integration into monitoring and SCADA systems.
- IEC 61850-9-2LE/IEC 61869 networked or IEC61850-9-2 Hardfiber process bus support
- DNP 3.0 (serial & TCP/IP)
- IEC 60870-5-103 and IEC 60870-5-104
- Modbus RTU, Modbus TCP/IP
- HTTP, TFTP, SFTP and MMS file transfer
- Redundant SNTP and IEEE 1588 for time synchronization
- PRP as per IEC 62439-3
- Supports Routable GOOSE (R-GOOSE)
Interoperability with Embedded IEC 61850
Use the F60 with integrated IEC 61850 to lower costs associated with feeder protection, control and automation. GE Vernova’s leadership in IEC 61850 comes from thousands of installed devices and follows on years of development experience with UCA 2.0.

The F60’s IEC 61850 Process Bus module is designed to interface with the Multilin HardFiber System, allowing bi-directional IEC 61850 fiber optic communications. The HardFiber System is designed to integrate seamlessly with existing Universal Relay applications, including protection functions, FlexLogic, metering and communications.
The F60 can also connect to GE Vernova MU320 or third-party merging units using standard IEC 61869 or IEC 61850-9-2LE communication protocols.
Cyber Security - CyberSentry™ UR (FW v7.4xx)
CyberSentry enables UR devices to deliver full cyber security features that help customers to comply with NERC CIP and NITIR 7628 cyber security requirements through supporting the following core features:
Secure FW upgrade
UR FW files v7.9 and up now include a hash code that allows for authentication prior to being used for upgrading UR devices.
Password Complexity
Supporting up to 20 alpha- numeric or special characters, UR passwords exceed NERC CIP requirements for password complexity. Individual passwords per role are available.
AAA Server Support (Radius)
Enables integration with centrally managed authentication and accounting of all user activities and uses modern industry best practices and standards that meet and exceed NERC CIP requirements for authentication and password management.
Role Based Access Control (RBAC)
Efficiently administrate users and roles within UR devices. The new and advanced access functions allow users to configure up to five roles for up to eight configurable users with independent passwords. The standard “Remote Authentication Dial In User Service” (Radius) is used for authentication.
Event Recorder (Syslog for SEM)
Capture all cyber security related events within a SOE element (login, logout, invalid password attempts, remote/local access, user in session, settings change, FW update, etc), and then serve and classify data by security level using standard Syslog data format. This enables UR devices integration with established SEM (Security Event Management) systems.
EnerVista™ Software
The EnerVista™ suite is an industry-leading set of software programs that simplifies every aspect of using the F60 relay. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate information measured by the F60 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the UR setup software included with every UR relay, to carry out postmortem event analysis and ensure proper protection system operation.

Recommended Products & services
P84 MiCOM 5th Generation
Multi-Functional Line Terminal Protection
The P84, part of the MiCOM P40 Agile 5th Generation family, is a multi-functional line terminal Protection that delivers high performance processing and a graphical HMI as standard. It is ideal for HV, EHV and UHV applications on lines and cables for 1 or 2 breaker applications with patented adaptive auto-reclose functionality.
P84 MiCOM 5th Generation
Multi-Functional Line Terminal Protection
The P84, part of the MiCOM P40 Agile 5th Generation family, is a multi-functional line terminal Protection that delivers high performance processing and a graphical HMI as standard. It is ideal for HV, EHV and UHV applications on lines and cables for 1 or 2 breaker applications with patented adaptive auto-reclose functionality.
Overview
Transmission and distribution systems are essential for the safe, sure routing of power from generation sources to consumers. However, exposed overhead lines transporting power are by nature sometimes vulnerable and prone to fault. In the case of a faulty circuit, the MiCOM range provides speedy protection to trip and isolate it, thereby preventing further damage. Each relay model contains a complete suite of backup protection elements covering all current, voltage and frequency applications. This permits simplified application and spares holdings, because the relay can be adopted as the standard protection platform.
The MiCOM P84 is suitable for feeders controlled by a single circuit breaker and for complex installations where feeders are controlled by two circuit breakers such as ring bus/mesh corner formations and the breaker-and-a-half configurations.
Key Benefits
- Extremely versatile, e.g. managing leader-follower reclosing schemes in the event of dual breaker application
- 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.
- Fast CB failure resetting (<3/4 cycle).
- Same heritage as the class leading MiCOMho P44 and MiCOM P54 family of products.
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
- Advanced Cybersecurity including AAA, Radius, RBAC, and Syslog
P84 MiCOM 5th Generation
MiCOM Multi-Functional Line Terminal Protection
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
GE Vernova’s latest P84 MiCOM 5th Generation transmission models offer a perfect functional match to our “mho” family of distance relays, from the heritage installed-base brands GE VERNOVA and Areva. The protection pedigree is maintained, optimised and advanced:
MiCOM P841A/B Relay Replacement:
- Form, fit and functional compatibility – the P84 fits in the same panel or rack space and offers the same features and Protection performance.
- The same S1 Agile software supports the new MiCOM relay and the legacy P841A/B
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 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
Recommended Products & services
HID
High Impedance Differential Module
Use the HID module in conjunction with a high-speed overcurrent relay to provide three phase high impedance differential protection for substation busbars of any voltage level. Additionally, it can also be used to protect electrical machines like transformers, generators or motors against restricted ground faults.
Each HID module includes resistors that provide the associated high impedance relay with stability againstexternal faults, and varistors (MOV - Metal Oxide Varistors) in order to limit the secondary peak voltage below 2 kV during fault conditions.
HID
High Impedance Differential Module
Use the HID module in conjunction with a high-speed overcurrent relay to provide three phase high impedance differential protection for substation busbars of any voltage level. Additionally, it can also be used to protect electrical machines like transformers, generators or motors against restricted ground faults.
Each HID module includes resistors that provide the associated high impedance relay with stability againstexternal faults, and varistors (MOV - Metal Oxide Varistors) in order to limit the secondary peak voltage below 2 kV during fault conditions.
Recommended Products & services
MVTP
Buswire Supervision Relay
Used to ensure the integrity of busbars and restricted earth fault schemes, the MVTP monitoring device has a low AC burden and requires no external resistors.
Single and 3-phase for continuous buswire supervision
Available in single and 3-phase relays, the MVTP provides continuous supervision of the buswires in high impedance type busbar protection schemes. It also detects open-circuited buswires as well as open-circuited main current transformers.
MVTP
Buswire Supervision Relay
Used to ensure the integrity of busbars and restricted earth fault schemes, the MVTP monitoring device has a low AC burden and requires no external resistors.
Single and 3-phase for continuous buswire supervision
Available in single and 3-phase relays, the MVTP provides continuous supervision of the buswires in high impedance type busbar protection schemes. It also detects open-circuited buswires as well as open-circuited main current transformers.
Recommended Products & services
MFAC
High Impedance Bus Differential Relay
MFAC relays provide high-speed differential protection for various types of power system plants including generators, reactors, busbars, motors and the individual windings of power transformers. MFAC relays are fast and reliable due to simple electromechanical construction and operate as a high impedance unit protection scheme with a wide range of setting.
MFAC
High Impedance Bus Differential Relay
MFAC relays provide high-speed differential protection for various types of power system plants including generators, reactors, busbars, motors and the individual windings of power transformers. MFAC relays are fast and reliable due to simple electromechanical construction and operate as a high impedance unit protection scheme with a wide range of setting.