GE UR series How to use

UR Family Version 5.8x - Release Notes 1
GE
Grid Solutions
UR Family
Version 5.8x
Release Notes
GE Publication Number: GER-4648D
Copyright © 2021 GE Multilin
Overview
This document contains the release notes for firmware and software version 5.80 to 5.84 of the GE Universal
Relay (UR) family of products.
Applicable to products: B30, B90, C30, C60, C70, C95, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35,
T60
Date of release 5.80: 2010
Date of release 5.81: 2010
Date of release 5.83: 24 April 2014
Date of release 5.84: 20 October 2021
In the following descriptions, a category letter is placed to the left of the title. See the table at the end of this
document for descriptions of the categories.
Major firmware releases can introduce new protection and control elements that can affect the device’s
Modbus memory map. Check the summary of released features to find out if it applies to a particular release.
When upgrading the firmware from versions 5.80 or 5.81 to version 5.84, the relay’s settings may
be reset to factory defaults. The relay’s settings should be saved before the upgrade and reloaded
to the relay after the firmware upgrade.
Firmware version 5.84 is not applicable to the L60 Line Phase Comparison System.

2 UR Family Firmware 5.80 - Release Notes
Firmware
Firmware 5.80
Generator Protection Systems G30, G60
N Extended monitoring capabilities on Generator Protection Systems “G60 and G30” comprise Voltage
and Current Harmonic components and THD
Products: G30, G60
Corrected firmware: 5.80
Description: G30 and G60 have been enhanced with new monitoring functionality that allows metering
and supervising current and voltage THD and harmonic component values. Harmonic component values
from 2nd to the 25th are available including THD. Both THD and Harmonics components are individually
available on a per-source and per-phase basis and are supported by the FlexElements, which allows
creating advance application schemes. This new functionality allows customers to monitor, trend, detect,
and analyze Power Quality issues that can affect the generator performance.
GE tracking number: 580-3
Bus Differential Systems B30, B90
E Bus Differential System B30 has been enhanced to have individual phase instantaneous overcurrent
elements per current source
Products: B30
Corrected firmware: 5.80
Description: Four additional phase instantaneous overcurrent elements “50P” have been added to the B30
protection functions, so that there is one 50P element available per current source. This enhancement
expands the protection capabilities of the B30 Bus Differential System.
GE tracking number: 580-4
Capacitor Bank P&C Systems C70
N Extended protection capabilities have been given to the C70 Capacitor Bank Protection System
through the addition of current directional elements
Products: C70
Corrected firmware: 5.80
Description: New phase and negative sequence directional elements “67P” and “67_2” have been added
to the C70 protection functions. This enhancement enables the C70 capacitor bank protection system to
fit advanced applications that require detection of the faulted section in a double-wye or H-bridge
capacitor configuration. Two independent elements are available per each one of them, phase (67P_1,
67P_2) and negative sequence (67_21, 67_22) directional functions.
GE tracking number: 580-5

UR Family Firmware 5.80 - Release Notes 3
E C70 has been enhanced to always have three sets of voltage elements independently of the quantity
of voltage sources
Products: C70
Corrected firmware: 5.80
Description: Enhancements on the C70 allow three sets of voltage elements to be always available
regardless the number of voltage banks configured in the C70. The Voltage elements that have been
enhanced to always have three elements available are: Phase under-voltage “27P”, Auxiliary over-voltage
“59X”, Neutral Over-voltage “59N”, Negative sequence Over-voltage “59_2” This enhancement allows the
C70 to fit those applications where more than two voltage elements are required per a single voltage
source, for example 59N alarm settings, 59N low-level trip, and 59N High-level setting.
GE tracking number: 580-6
E Thermal overcurrent curve “I2T type” has been enhanced with the addition of a new reset operand
Products: C70
Corrected firmware: 5.80
Description: The capacitor bank protection system C70 has a new operand for the I2T overcurrent curve.
The operand indicates the reset status of the I2T overcurrent curve (cooling portion of the thermal curve
or thermal memory). Since the new operand takes into account the thermal status, it can be used in a
permissive scheme to allow re-energizing a capacitor bank after tripping on an overload condition.
GE tracking number: 580-7
Feeder Protection Systems F35, F60
N Extended protection capabilities have been given to the F35 Multi Feeder Protection System through
the addition of Negative Sequence Overcurrent elements
Products: F35
Corrected firmware: 5.80
Description: New negative sequence overcurrent elements “50_2 and 51_2” have been added to the F35
protection functions. This enhancement enables the F35 multiple feeder protection system to better fit
protection schemes where early detection of negative sequence overcurrent condition are required.
GE tracking number: 580-8
Line Differential Systems L30, L60, L90
G The Phase Comparison Element “87PC” has been modified to ensure the transient block pickup is
active only when the phase coincidence detector picks up
Products: L60
Corrected firmware: 5.80
Description: The L60 Phase Comparison Element “87PC” has been modified to ensure the “transient block
pickup delay timer” starts only after the 87PC pickup delay timer has expired. On previous firmware
versions, L60 users needed to increase the “transient block delay timer” (by adding the “87PC pickup delay
timer” value) to get an optimal timing, so users doing the upgrade to the latest firmware version do not
have to compensate this way.
GE tracking number: 580-9

4 UR Family Firmware 5.80 - Release Notes
N New operation mode for the Phase Comparison Elements enable the L60 to interface with other
manufacturers legacy phase comparison devices
Products: L60
Corrected firmware: 5.80
Description: The Phase Comparison operation mode can be set through the type of “signal” setting. A new
mode of operation “mixed I_1 + I_2/K” has been added to the other two existing choices. The L60’s K
factor range is 0.08 to 0.25, therefore this mode is equivalent to other manufacturers’ mode “mixed I_1 +
K* I_2” for which K factor range is 4 to 12.5. This new operation mode makes the L60 compatible with
other manufacturers’ installed legacy phase comparison relays that use the operation mode indicated
above. So the Phase Comparison Element can interface with those devices (for example, L60 at one end of
the line and another manufacturer’s legacy device installed at the opposite end of the line).
GE tracking number: 580-10
U L90 inter-relay communication for three-terminal schemes has been changed to ensure
communication is restored between all L90 devices when a channel failure condition is cleared
Products: L90
Impacted firmware: 4.9x, 5.2x, 5.4x, 5.6x and 5.7x
Corrected firmware: 5.80
Description: As standard behavior, a three terminal line differential scheme raises “PFLL Fail”
(synchronization status) and “CH fail” operands at all three terminals when both communication channels
fail on at least one terminal. However, if only one channel goes back to normal, L90s at all terminals can
still show PFLL fail and CH Fail, and neither the communication nor the differential protection are restored.
This issue only affects relays with FW version 4.9x, 5.2x, 5.4x, 5.6x and 5.7x. If your relay firmware version
is different to the ones mentioned, no action is required.
GE tracking number: 553-3
Motor Protection Systems M60
F Changes on the Thermal Model element prevents inadvertent operation while the relay is in
maintenance for the purpose of replacing a CPU module
Products: M60
Corrected firmware: 5.54, 5.80
Description: The Thermal Model protection element has been modified to ensure that the element does
not operate when the relay is powered up after replacing the CPU module. Previous firmware versions can
allow the element to operate when under the described maintenance condition. If your maintenance
procedure requires the motor to be stopped or your trip command to be isolated when working on the
protection relay, the described exception does not affect your motor normal operation, however the
thermal element can operate so that your relay has to be reset before putting it in service. FW version
5.54 and 5.80 properly address this behavior.
GE tracking number: 580-9

UR Family Firmware 5.80 - Release Notes 5
Transformer Protection Systems T35, T60
E The “Five windings” software options on the T60 relay have been enhanced to have a Load
Encroachment element
Products: T60
Corrected firmware: 5.80
Description: T60 software options number 20, 21, 22, and 23 enable the T60 to support five winding
transformer schemes. These software options now also support the Load Encroachment element, which is
not available in previous firmware releases. With this firmware version, the Load Encroachment element is
supported by all “five windings software options”.
GE tracking number: 580-13
Common Protection Elements
E The Negative Sequence Directional Overcurrent element has been enhanced to deliver additional
security during phase-to-phase
Products: D30, D60, F60, G30, G60, L60, L90
Corrected firmware: 5.80
Description: The Negative Sequence Directional Overcurrent “67_2” element has been enhanced with a
restraint factor that increases the element security when positive sequence current values are higher
than 0.8pu (high fault-currents that are typical for phase-to-phase faults). This restriction is enabled when
the element is set to operate on the “Zero-sequence” current. In addition, the operating current formula
has been modified to consider a bigger portion of the positive sequence current when compared with the
negative sequence component. This also increases the element security.
GE tracking number: 580-14
Communications
N Line Differential Systems L30 and L90 to support the IEC61850 logical node for differential elements
“PDIF”
Products: L30, L90
Corrected firmware: 5.80
Description: A new IEC61850 logical node “PDIF” has been added to the L30 and L90 Line differential
Systems. The pickup and operate states of the line differential elements “87L” are now mapped to the
“PDIF” logical node.
GE tracking number: 580-15
C Changes to the IEC61850 generic logical node prefixes prevents GOOSE transmission from getting
frozen when prefixes are four or five characters long
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.80
Description: IEC61850 implementation allows customers to configure prefixes on all the supported logical
nodes. Prefixes can be from one to six characters long. Previous firmware versions showed that GOOSE
messages can freeze when any Generic Logical Node was given prefixes that were four or five characters
long. Generic logical nodes supported by the UR family are GGIO1, GGIO2, GGIO3, GGIO4 and GGIO5.
Customers that are using these logical nodes and have prefixes that are four or five characters long can
detect this issue during commissioning tests and are advised to upgrade the firmware version of their
units. Customers can also increase or reduce the prefixes length, so this issue does not affect them.
GE tracking number: 580-16

6 UR Family Firmware 5.80 - Release Notes
C Enhanced DNP 3.0 protocol to properly report internal time delays under DNP object 52
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Impacted firmware: All except 5.04 and 5.54
Corrected firmware: 5.80
Description: The DNP3.0 protocol was enhanced to accurately estimate and report the value of “time
delay fine” that is comprised within the DNP 52 object. This time represents the period between the time of
message reception and the time of message reply by the UR relay and helps the DNP master to calculate
the delay in the serial wire. Firmware versions not affected: 5.04, 5.54.
GE tracking number: 504-5
PMU - Synchrophasors
E The N60 PMU recorder capabilities have been enhanced to have eight additional analog channels
Products: N60
Corrected firmware: 5.80
Description: The N60 has been enhanced with the addition of eight analogs channels to the PMU
Recording element.
Taking into account this enhancement, the quantities of channels within a single PMU recorder are:
14 for phasors
16 analogs
16 digital
Adding the eight additional analog channels demanded changes to the Modbus addresses related to the
PMU recording settings. All PMU actual values and other PMU settings have not been affected. See the
N60 instruction manual for details.
GE tracking number: 580-19
M Changes to the PMU data recording function ensure an accurate time stamping of the PMU record
trigger
Products: N60, D60, L90, G60
Corrected firmware: 5.80
Description: The PMU recorder function has been modified to ensure that its trigger is time-stamped
accurately. Previous firmware versions can time-stamp the trigger event with the time of the previous
PMU reporting interrupt. All the other PMU functions (for example, data generation and recording) work
correctly. All customers using the PMU recording functionality can upgrade their devices so that the
trigger event is time-stamped properly.
GE tracking number: 554-3
Events and records
R Changes on the Oscillography recorder ensure the event sampling rate follows the set sampling rate
Products: L60
Corrected firmware: 5.80
Description: Oscillography settings on the L60 allow the user to choose sampling rates from eight to 64
samples per cycle. However, previous firmware versions, regardless of this setting, always record
oscillography events at 64 samples per cycle. This limits the length of the record. Firmware version 5.80
ensures oscillography events are recorded as per the sampling rate set by users. L60 users who require a
sampling rate below 64 samples per cycle are advised to upgrade their device firmware.
GE tracking number: 580-21

UR Family Firmware 5.80 - Release Notes 7
E The Fault Report element has been enhanced to accommodate neutral current values
Products: C60, D30, D60, F35, F60, L30, L60, L90
Corrected firmware: 5.80
Description: The Fault Report element is now able to capture and show pre-fault and fault phasors
(magnitude and angle values) of the neutral current. This implementation makes analysis of fault events
easier.
GE tracking number: 580-22
N New self-test FlexLogic operand has been added to indicate a “Brick Trouble” condition
Products: B30, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L90, M60, N60, T35, T60
Corrected firmware: 5.80
Description: “Brick Trouble” is a self-reset minor self-test warning message available on UR devices when
configured with the IEC61850 Process Bus module (HardFiber Brick). The message activates the “Any self-
tests” and “Any minor error” operands. With firmware version 5.80, a new operand “Brick Trouble” has
been created to specifically identify this self-test alarm. Like any other FlexLogic operand, this new
operand is available to be used across the full range of protection and control elements (FlexLogic, digital
elements, and so on).
GE tracking number: 580-23

8 UR Family Firmware 5.81 - Release Notes
Firmware 5.81
Line Differential Systems L90, L60, L30
N The Line Current Differential Systems to support hybrid conventional–HardFiber line terminal wiring
Products: L30, L90
Corrected firmware: 5.81
Description: This FW version enables the L90 Line Current Differential System to support hybrid wiring
configurations where one line terminal uses traditional wiring, and the other line terminal uses the
HardFiber technology. This applies for two and three-line terminal schemes. Previous firmware versions
supported either traditional or HardFiber wiring when both line terminals had the same kind of wiring
(both traditional or both HardFiber).
GE tracking number: 581-1
Common Protection Elements
P Ground Time Overcurrent elements have been changed to use the correct signal input when set to
“phasor”
Products: B30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, T35, T60
Corrected firmware: 5.81
Description: The “input setting” within the overcurrent elements determines the type of signal input the
elements use for operation. Phasors or RMS current can be set to the “input setting.” Changes to the
Ground Time Overcurrent elements ensure that they operate based on the ground current phasor
magnitude when their “input setting” is “phasor.” Previous firmware versions have the Ground Time
Overcurrent elements operating based on the “RMS” current value whether “RMS” or “phasor” were set to
the “input setting”.
GE tracking number: 581-2
P The Synchrocheck elements have been changed to correctly detect a dead source when set to “DV1
XOR DV2”
Products: C60, D30, D60, F60, G30, G60, L30, L60, L90, N60, T60
Corrected firmware: 5.81
Description: When the “Dead Source Select” setting within the Synchrocheck element is set to “DV1 XOR
DV2,” the element has to determine two conditions: a) one of the sources is dead evaluating existing
voltage vs. the “Dead V1/2 Max Volts” setting, and b) the other source is live evaluating existing voltage vs.
the “Live V1/2 Min Volts” setting. Previous firmware versions have the Synchrocheck elements verifying
dead source by evaluating the existing voltage vs. the “Live V1/2 Min Volts” setting when set as mentioned
above. And then the element incorrectly declares dead source. Changes to the Synchrocheck elements
ensure that they evaluate the existing voltage vs. the right setting. This issue does not affect customers
who have the “Dead Source Select” setting set different to “DV1 XOR DV2”.
GE tracking number: 581-3
P The Autoreclose element has been changed to ensure it goes to “lockout” state when the element is
blocked and unblocked while in “reclose in progress”
Products: D30, F35, F60, L30
Corrected firmware: 5.81
Description: If the operand set to the “AR Block” setting is activated when a reclose cycle is in progress, the
autoreclose element goes to “Lockout” state. If the “AR Block” is subsequently removed, previous firmware

UR Family Firmware 5.81 - Release Notes 9
versions can allow the reclose element to execute reclose shots. Changes to the autoreclose element
ensure that the element stays on “lockout” state when the described conditions are present.
GE tracking number: 581-4
P The “Non-Volatile Latches” elements have been changed to ensure they will maintain the output
status when cycling power to the relay
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.81
Description: Changes to the Non-volatile Latches ensure that those elements maintain the output status
(on or off) when the relay is powered off and on. Previous firmware versions can allow the elements’
output to momentarily change state when the relay power cycles. Customers using the “non-Volatile
Latches” for protection or control purposes are advised to upgrade their relay firmware version.
GE tracking number: 581-5
Communications
C Changes to the GGIO4 data set prevent ”Data Access Errors” in its unbuffered report control block
Products: B30, B90, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.80
Description: GGIO_4 and GGIO_1 data sets have three report control blocks each. When at least four or
more data items are configured in GGIO_4 and eight or more within GGIO_1, firmware versions 5.71 and
5.80 can allow the GGIO_4 Un-buffered Report Control Block to show the following message “Data Access
Error: type-inconsistent”. The changes implemented to GGIO_4 with this release fix this communication
issue.
GE tracking number: 581-6

10 UR Family Firmware 5.83 - Release Notes
Firmware 5.83
Capacitor Bank P&C System – C70
P Neutral Voltage Unbalance Autoset and Voltage Differential Autoset operational when C70 has only
voltage inputs, for example only 8V CT/VT DSPs
Products: C70
Corrected firmware: 5.83, 6.02, 7.20
Description: This firmware version introduces the following fixes to the Neutral Voltage Unbalance and
Voltage Differential elements:
The Autoset functionality of these elements does not change any of the coefficients as expected if the C70
has only voltage inputs, hence this is not an issue if the C70 has any CT bank inputs in its order code.
GE tracking number: 720-04
Line differential protection systems – L30, L90
M Displayed values of 87LG restraint current has been improved to meet +/- 5% accuracy when sensing
low values
Products: L30, L90
Corrected firmware: 5.83, 6.01
Workaround: Not applicable
Description: The restraint current values of the ground differential element are accurately derived and
used by the line differential algorithm. However, the restraint values of the ground differential element
that are displayed by the relay might not meet the design accuracy of +/- 5% when restraint current
values are below 0.11xIn.
These changes do not affect the operation of the ground line differential element, but only restraint
current values that are displayed.
GE tracking number: 601-3
E Increased availability of the line differential element when experiencing short communication
disruptions
Products: L30
Corrected firmware: 5.83, 6.01
Workaround: Not applicable
Description: When the line differential element 87L is enabled, the interval between consecutive incoming
packets on the inter-relay communication channels is monitored. When this interval between packets
exceeds 66 milliseconds, a channel failure is declared. This FW version extends the allowed interval
between packets from 66 to 100 milliseconds. This change reduces the sensitivity of the channel failure
detector and prevents short communication disruptions from repeatedly taking the line differential
protection out of service.
GE tracking number: 601-1
H Line differential element to ensure all three terminals correctly trip when the differential scheme is
set with 50DD SV supervision and is operating in master slave mode
Products: L30, L90
Corrected firmware: 5.83, 6.01
Workaround: Not applicable

UR Family Firmware 5.83 - Release Notes 11
Description: In a three-line terminal system, the Line Differential Element operates in master-master mode
provided there is not any channel failure. If one communication channel fails, the 87L element changes to
master-slave mode. When in that mode, the channel failure blocks the disturbance detector element
50DD SV in the slave relays, and the master relay (relay with no channel failure) trips the slave relays by
sending DTT commands if a fault within the differential zone is detected. Therefore, if the disturbance
detector element “50DD SV” is set to supervise the line differential element “87L” and there is a line fault
while the 87L element is in Master-Slave mode, the slave relays do not trip after receiving the DTT signal
issued by the Master relay. This FW version introduces a change to the 87L element so a local source
disturbance detector “SCRx 50DD” is used in parallel to supervise the 87L element when the “50DD SV”
element is not available. This allows the slave relays trip after receiving the DTT command from the Master
relay upon the condition described above. This fix only affects users who have L30 or L90 devices applied
to a three-line terminal system and have enabled both the master-slave mode and the 50DD SV
supervision. Affected users can either upgrade their UR device with the corrected firmware version or use
the UR FlexLogic to implement the parallel supervision explained.
GE tracking number: 601-2
F The voltage memory for distance polarization in L90 relays has been changed to ensure only actual
voltage values are used when there is an important difference between system and sampling
frequencies
Products: L90
Corrected firmware: 5.83, 6.02, 7.10
Workaround: Not applicable
Description: Inter-relay communication (IRC) between L90 devices located at each line terminal is primarily
required for line differential and pilot scheme applications. Single or redundant communication channels
can be applied. After recovering from a channel failure, L90 devices must synchronize for the Line
Differential Element to go back to normal operation. The synchronization process can cause the tracking
(sampling) frequency to deviate from the system frequency. A significant difference between the “system
frequency” and “sampling frequency” can cause the distance element to operate if voltage memory is
used for distance polarization. This FW release prevents the use of voltage memory for distance
polarization when under the described condition. This issue only affects users who have both (line
differential and distance) protection elements enable. Users who set both distance and line differential
elements to enable simultaneously are advised to upgrade their relay firmware version with this version.
For further information on the voltage memory for distance polarization, see the L90 instruction manual.
GE tracking number: 710.11
F The Distance protection element has been changed to ensure that setting changes to Line protection
elements, made when the relays is in service, do not cause the phase distance element to operate
Products: L90
Corrected firmware: 5.83, 7.10
Workaround: Not applicable
Description: Setting changes to UR devices can be carried out by uploading a complete setting file or
editing individual setting fields via front panel or UR setup software. When editing individual settings to a
relay that is in service and reading close-to-nominal current and voltage signals, changing any of the line
differential or distance protection setting fields can cause the phase distance element to operate. This FW
release ensures the phase distance element does not operate under the described conditions. Standard
operating procedures require users to remove the relay from service when protection related settings are
changed or updated. Users who follow this type of procedure are not at risk of experiencing a miss
operation.
GE tracking number: 710-12
E Increased security for line differential protection when experiencing Phase and Frequency Locked
Loop (PFLL) transition errors
Products: L30, L90

12 UR Family Firmware 5.83 - Release Notes
Corrected firmware: 5.83, 6.02, 7.20
Workaround: Not applicable
Description: When line differential protection (87L) schemes are exposed to extremely noisy or unreliable
channel conditions, the PFLL element can lose synchronism and then re-synchronize. GE strongly
recommends that, for maximum security, the disturbance detector element (50DD) be assigned to
supervise operation of the 87L element. Failing to follow this recommendation can potentially cause the
87L element to misoperate during re-synchronizing attempt. This improves the 87L element security to
prevent misoperation when, under the described conditions, the 50DD element is not supervising the 87L
element. Customers who have followed GE recommendations for heavily noisy channels or having reliable
inter-relay communication are not required to take action.
GE tracking number: 720-7
Motor protection system - M60
F Changes to Voltage Dependent Thermal overload element add security when starting very high
inertia motors
Products: M60
Corrected firmware: 5.72, 5.83
Workaround: None
Description: Two key variables of the Thermal overload protection element have been changed to
increase the element’s security:
- The “Voltage Dependent Thermal Overload curve” has been modified (10% more Stall current at 100%
volts) to give motors a longer acceleration time. This is especially useful when protecting very high inertia
motors
- Negative sequence currents are now filtered to properly bias the equivalent motor heating current
“Ieq” when the relay senses significant motor load changes.
If your thermal overload element is not set for voltage dependent, no action is required.
GE tracking number: 572-1
Common protection and control elements
P The Restricted Ground fault algorithm has been changed to correctly apply timers that determine the
value of negative sequence restraining current used during transformers energization and operation
Products: G30, G60, L90, T60
Corrected firmware: 5.83, 7.10
Workaround: Not applicable
Description: The Restricted Ground Fault element uses the maximum among the three current
components as restraining signal:
Irest = max (IRO, IR1, IR2)
Where, the negative-sequence component of the restraining signal (IR2) is calculated as follows:
IR2 = 1 x |I_2| or IR2 = 3 x |I_2|
Multiplier “1” is used right after five cycles of complete transformer de-energization, while multiplier “3” is
used right after two cycles of complete transformer energization (during transformer’s normal operation).
UR devices with previous FW versions showed timers were set to 10 and four cycles instead. This FW
version fixes this out-of-spec issue. For details on the “Restricted Ground Fault” element, see the
Instruction manual of any applicable UR device.
GE tracking number: 710-13

UR Family Firmware 5.83 - Release Notes 13
P Changes to the “IEEE Very Inverse overcurrent curve” ensure accurate tripping times when
configured with very low pickup value
Products: B30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, T35, T60
Corrected firmware: 5.83, 5.90
Workaround: None
Description: This firmware version introduces changes to the “IEEE Very Inverse Overcurrent Curve” that
make its operating time to better match the specification when the configured pickup value is lower than
0.1 per unit. Devices with previous firmware versions can operate faster than the specified time under
such conditions. Users for whom Time Overcurrent applications require pickup values higher than 0.1 per
unit are not affected by this issue and a firmware update is not required.
GE tracking number: 590-15
F Potential Overfrequency misoperation at low RMS metered values
Products: D60, F60, G30, G60, L90, M60, N60, T60; however mostly Generator Protection applications
Corrected firmware: 5.83, 7.20
Workaround: None
Description: At very low signal sources (less than 5%), the measured frequency value can be incorrectly
perceived as much higher than actual, at low frequency levels. This effect is experienced typically during
static generator startup. The measured frequency is based on zero-crossings, which can be invalid.
The following changes were made to correct the frequency metering at low signal and frequency levels:
• Hysteresis is increased to 5% of the signal RMS cutoff threshold
• Five consecutive cycles of good RMS waveform metered signal are checked to validate a good signal.
GE tracking number: 720-57
U The “Negative Sequence and Neutral Directional Overcurrent” elements have been modified to deliver
enhanced security and dependability when sensing very low levels of V2 (V0) and significant levels of
I2 (I0)
Products: C70, D30, D60, F60, G30, G60, L30, L60, L90, M60, T60
Corrected firmware: 5.83, 5.72
Workaround: None
Description: This firmware version introduces important changes to the “Negative sequence directional”
and the “Neutral directional” overcurrent elements, which improve the element’s security and
dependability.
(1) Polarizing voltage compensation with offset impedance is only applied when the current magnitude I2
or I0 exceeds 0.2pu. This avoids overcompensation that might lead to possible directionality errors when
in presence of conditions with low levels of I2 or I0 currents.
(2) Both polarizing and operating quantities are now checked against cutoff level settings that are
selectable by the user at “Product Setup\Display Properties” for application flexibilities.
GE tracking number: 572-2
P The “Fault Type” comparator logic, that is part of distance protection elements, has been changed to
correctly block the ground distance elements when sensing a double-line-to-ground fault
Products: D30, D60, G60, L60, L90, T60
Corrected firmware: 5.83, 7.10
Workaround: None
Description: In order to maintain selectivity during a double-line-to-ground fault, the ground distance
element is supervised by the “Fault Type” comparator that uses phase angle between the negative and
zero-sequence currents. However, the “Fault Type” comparator can also be removed when under the
following conditions:
a. During an open pole condition or

14 UR Family Firmware 5.83 - Release Notes
b. When “3I_0 > OC Supv and I_2 < CutOff”
Any of these conditions prevents the “Fault type” comparator from blocking of the ground distance
elements. Devices with previous firmware versions show the CutOff level is not correctly scaled, which
breaks the condition “b” described above.. For additional details on the “Fault type” comparator, see the
Instruction manual of any applicable UR device.
GE tracking number: 710-8
P Neutral directional overcurrent detection error
Products: C70, D30, D60, F60, G30, G60, L30, L60, L90, M60, T60
Corrected firmware: 5.83, 7.20
Workaround: None
Description: Neutral Directional overcurrent element flags NTRL DIR OC FWD and NTRL DIR OC REV do not
operate as expected when polarization is selected as Dual. When IG is not supplied, the V0 and I0
comparator had a small error, reducing the operate region by 20 to 40 degrees (from the limit angle) and
was found to be smaller for the NTRL DIR OC REV operand, ensuring adequate security. This applies to all
previous firmware versions.
GE tracking number: 720-26
Communications
C New GOOSE Dynamic VLAN Priority
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.8x (from 5.83)
Workaround: None
Description: IEC 61850 GOOSE messages contain the IEEE 802.1Q extension for the inclusion of Ethernet
Priority and VLAN addresses in an Ethernet data frame. The existing implementation allows users to set a
single value of priority that applies to all GOOSE messages. That singular value of priority is embedded in
the extended Ethernet frame. Firmware version 5.83 includes a “Dynamic VLAN Priority” feature that
allows dynamic change of the priority level of published GOOSE messages. This feature is included only
with firmware version 5.8x, starting with 5.83.
Existing settings for “GOOSE VLAN priority” remain as a single digit setting; however, the single digit now
represents a “Dynamic Priority Range”. The following table shows all new “Dynamic Priority range” and
“VLAN Priority” settings.
VLAN Priority Setting Dynamic Priority Range
7 7 to 4
6 6 to 4
5 5 to 4
4 4 static
3 7 to 5
2 6 to 5
1 5 static
0 6 static
The first time a GOOSE message is published (triggered on a state change), it has the highest priority of the
“Dynamic Priority Range”, and then each subsequent GOOSE re-transmission (based on the re-
transmission profile setting) has a priority that is decremented by one count. This repeats until the actual
priority value reached the “end” of the Dynamic Priority Range. For Instance, a VLAN priority setting of 7
sets the priority of the first GOOSE publishing to 7. The priority of the first re-transmission of the GOOSE is
6, the priority of the next re-transmission is 5, and then finally 4. For further information on the GOOSE
Dynamic VLAN Priority, see the instruction manual of any applicable UR device.
GE tracking number: 583-01

UR Family Firmware 5.83 - Release Notes 15
R IRIG-B clock synchronization to properly update time when time is set on Dec-31st of a leap year
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 6.01
Workaround: None
Description: If the date and time settings were provided to an UR devices on December 31st of a leap
year, the relay showed the “Maintenance Alert: IRIG-B error” and did not update its date and time. This FW
version ensures the relay’s date and time are properly updated regardless when these parameters are set
and the type of year.
GE tracking number: 601-8
C Breaker and switch elements have been changed to ensure they show the right status when there is
no feedback from the breaker/switch auxiliary contacts and to comply with the IEC61850 standard
Products: B30, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 5.90
Workaround: None
Description: “Breaker” and “Switch” elements declare status depending on the breaker’s / Switch’s
auxiliary contact feedback (normally open and normally close contacts). This FW version introduces
changes to the Breaker and Switch elements logic that ensure the proper status indication when there is
no feedback from the auxiliary contacts (no DC voltage on both normally open and normally close
contacts). In addition, the logic related to both “Bad” and “Intermediate” status was modified to comply
with the IEC61850 standard (00 = ”intermediate”, 11 = “Bad”). For further information, see the UR device
instruction manual.
GE tracking number: 590-12
C UR IEC6870-5-104 implementation has been changed to prevent slave devices from issuing start
request command
Products: B30, B90, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 5.72
Workaround: None
Description: IEC60870-5-104 determines that only master devices are to issue StartDT requests. UR relays
are 60870-5-104 slave devices and are not issue this request.
Previous FW versions allow UR devices to issue a StartDT request when receiving a connect request from
the IEC60870-5-104 master.
If the IEC60870 protocol is not being used or your relay’s FW version matches any of the listed below no
action is required.
GE tracking number: 572-7
E UR IEC6870-5-104 implementation has been enhanced to support “Test command with Date/Time”
Products: B30, B90, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 5.72
Workaround: None
Description: IEC60870-5-104 determines that slave devices are to respond with a 16-bit value (test
sequence counter) and its corresponding timestamp when a test command is received. This firmware
version enhances the UR IEC60870-5-104 protocol implementation to the described test command.
GE tracking number: 572-3
C The “IEC104 Point Lists” element has been changed to properly display analog values when only one
analog point is programmed
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.72, 5.83

16 UR Family Firmware 5.83 - Release Notes
Workaround: None
Description: The IEC60870-5-104 protocol supports a configurable point list element that can be
programmed with binary or analog inputs. Previous firmware versions may not display analog values
properly when only one analog point is programmed.
GE tracking number: 572-4
C The “IEC104 Point Lists” element has been changed to ensure the entire list is retrieved when all
analog points are being used.
Products: C70, D30, D60, F60, G30, G60, L30, L60, L90, M60, T60
Corrected firmware: 5.83, 5.72
Workaround: None
Description: The IEC60870-5-104 protocol supports a configurable point list element that can be
programmed with binary or analog inputs. Previous firmware versions may not allow IEC60870-5-104
masters to retrieve all the analog values when all the 255 analog points are programmed. If your relay
firmware version matches any of those listed below, no action is required.
GE tracking number: 572-5
C UR FlexElements have been changed to properly operate when programmed to use IEC61850 GOOSE
analogs inputs
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.72, 5.83
Workaround: None
Description: The UR FlexElements are universal comparators that can calculate net difference or monitor
UR actual analog values. Previous firmware versions can allow FlexElements to improperly apply the unit
base value when IEC61850 GOOSE analog are set as the FlexElement’s input, which can lead to an
incorrect operation of the FlexElement.
GE tracking number: 572-6
C The “Last Setting Change Date” Modbus register has been modified to prevent its update when the
“Setting_Changes.log” is read
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83
Workaround: None
Description: The “Last Setting Change Date” Modbus register is updated with every setting change action.
Previous UR firmware versions show that this Modbus register was incorrectly updated when customers
connected to the UR device and read the “setting_changes.log.” This firmware version ensures that the
“Last Setting Change Date” is correctly updated.
GE tracking number: 583-02
C IEC 61850 server has been changed to correctly indicate supported services
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 7.21
Workaround: None
Description: After a 61850 client initiates communication with a UR device, the UR indicates all supported
MMS client-server services. This can cause unnecessary client-server traffic. UR devices with previous FW
versions incorrectly indicate that MMS “DefineNamedVariableList” is a supported service.
GE tracking number: 721-02

UR Family Firmware 5.83 - Release Notes 17
C The UR real time clock element has been changed to correctly calculate UTC when receiving IRIG-B
time code signal with IEEE1344 extension
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83
Workaround: None
Description: UR devices do support receiving IRIG-B signals with or without IEEE1344 extension. The
IEEE1344 extension adds additional information (such as year, DST, and time zone) to the IRIG-B signal.
Prior firmware versions have evidenced that UR devices receiving IRIG-B signals with IEEE1344 extension
may not accurately calculate UTC, which directly affects GOOSE messages time stamp (must use UTC
reference). This FW version ensures UTC is correctly calculated under the described conditions. For more
details on the UR real time clock functionality, see the UR instruction manual of any applicable device.
GE tracking number: 583-03
Cyber security – CyberSentryTM
C The UR operating system debug port has been changed to reject Ethernet traffic
Products: B30, B90, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 5.92
Workaround: None
Description: All UR devices equipped with an Ethernet port support the logical port #17185. This logical
port is a debug port dedicated to the device operating system. This port is used for factory service only.
Any port scanner connected to a UR Ethernet port detects that port as “open,” however UR devices with
this firmware version do support a data filter that discards any data for the debug port. The debug port
traffic is only allowed when a factory service password requirement is met. End users having UR devices
with an Ethernet port and concerned about cyber security in their substation LAN can upgrade their
devices with this UR firmware version. UR devices with no Ethernet port are not affected.
GE tracking number: 592-1
N New keyboard command for password reset and default settings aligned to NERC-CIP requirements
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Impacted firmware: 5.82
Corrected firmware: 5.83, 5.92
Workaround: None
Description: UR devices have an encrypted version of the “Setting” and “Command” passwords that can
be used to retrieve the actual password when users forget any of the passwords. To use the previous
encrypted passwords, users have to contact GE Multilin’s technical support team and provide their
encrypted passwords (one or more per relay), then technical support provides a decrypted version for
each submitted password. This firmware version introduces a new mechanism for password reset (not
password retrieval) that gives users independence and complete ownership of the password reset
procedure. One key code can be used on all UR devices. To reset the password, users must now submit a
key via the front panel (users can obtain their key by contacting GE technical support). This “password
reset command” also clears all settings and event records, which is actually aligned to the NERC-CIP R7.1
and R7.2 requirement. Users are advised backup the relay data previous to submitting the password reset
command. For details, see any UR instruction manual.
GE tracking number: 592-2

18 UR Family Firmware 5.83 - Release Notes
Events and records
R The “Real Time Clock” element has been modified to ensure that the events-timestamp is correct
when the DST function is active and power is cycled
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 5.90
Workaround: None
Description: The Real Time Clock element has Daylight Saving Time (DST) functionality that allows the
device to follow the DST local rules. Previous FW versions show that if the DST function is active and the
device auxiliary power is cycled, the events timestamp can shift one hour from the actual time. This FW
version ensures the DST time is preserved when the auxiliary power is removed from the relay.
Furthermore, the DST function setting is correctly applied to the timestamp that is shown on the fault
report summary page when accessed through UR Setup Software or web browser.
GE tracking number: 590-14
P The timestamp routine has been changed to prevent timestamp discrepancies and a longer
protection pass period when daylight savings time (DST) is enabled
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 5.91
Workaround: None
Description: When the DST function is enabled, the timestamp routine checks whether the timestamp
needs to be updated according to DST for every UR event record. On a relay generating dozens of events
within one protection pass period; this routine can make the protection pass longer than the relay
specification. Therefore, the communication elements running at the end of the protection pass use the
latest protection pass time, which forces a discrepancy between the internal event recorder and
communication protocol time stamp. A UR relay generating dozens of events within one protection pass
period can also lead protection and control elements to operate out of specification. This firmware version
prevents timestamp discrepancies and allows a longer pass period when DST is enabled.
GE tracking number: 591-1
R UR Event recorder to avoid events flooding when there is an Ethernet port failure
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 6.01
Workaround: None
Description: The UR Event Recorder registers all UR self-test events that include Ethernet Port Failures “Pri
Ethernet Fail/Sec Ethernet Fail”. Relays with previous firmware versions show the event recorder properly
registers Ethernet Failure events when they appear. However, as long as the Ethernet failure condition
remains, this event is generated every two seconds, which floods the event recorder. This firmware
version fixes the event recorder to prevent event flooding by registering only one event per Ethernet port
failure. UR devices with no Ethernet ports are not affected by this issue.
GE tracking number: 601-6
E Event description added to distinguish event types in an Event Report
Products: B30, B90, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 7.20
Workaround: None
Description: Event descriptions of contact inputs and outputs, virtual inputs and outputs, direct inputs and
outputs, remote inputs, double point inputs, field contact inputs and outputs, field latching outputs, shared
inputs and outputs, FlexElements, and digital elements now include added abbreviated text to distinguish
among various event types with the same name. For example, Contact Input 1 ON with default settings is
presented as Cont Ip 1 ON(CI1)

UR Family Firmware 5.83 - Release Notes 19
GE tracking number: 720-44
Platform
M Transduced outputs have been modified to show the accurate values when used to represent fault
location
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 6.01
Workaround: None
Description: The UR Transducer output elements “DCMA Outputs” can be programmed to represent a
number of analog values available in the UR relay. One of the choices is fault location (distance to fault).
Relays with previous firmware versions show transduced distance to fault values that do not match the
calculated distance. This firmware version makes DCMA output elements use the “line length” setting as
the element’s base unit when a DCmA output is used to represent fault location, thus providing accurate
transduced fault location. This firmware change only affects users who have configured the UR DCmA
outputs to represent fault location.
GE tracking number: 601-07
E Loopback mode has been enhanced to allow channel monitoring
Products: L30, L90
Corrected firmware: 5.83, 6.01
Workaround: None
Description: Upon detection of a loopback test, a UR device goes into Loopback Mode which, among other
elements, disables the channel monitoring. Without channel monitoring commissioning or
troubleshooting, procedures with loopback tests can become complex. This firmware version changes the
UR devices loopback mode to allow channel monitoring while a loopback test is performed. This allows
users access to the channel status data (channel 1/2 status, number of lost packets, and so on), which
simplifies commissioning and/or troubleshooting procedures.
GE tracking number: 601-04
C Logic of the Latching type Contact outputs has been modified to ensure contact outputs correctly exit
from Test Mode
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 5.90
Workaround: None
Description: The UR test mode functionality allows users to force the actual state of programmable
contact outputs. However, latching type contact outputs found in the I/O modules did not update their
state to the real condition when returning from Test Mode. This FW version ensures the latching type
contact outputs effectively update their state to the actual device condition after coming back from Test
Mode.
GE tracking number: 590-22
HardFiber
E Brick firmware has been changed to improve the resilience against Flash memory corruption
Products: B30, B90, C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60
Corrected firmware: 5.83, 6.01
Workaround: None
Description: HardFiber Brick firmware has improved resiliency against Flash memory corruption during

20 UR Family Firmware 5.83 - Release Notes
boot-up. This firmware release ensures that the firmware in the Brick is maintained when connecting a
Brick to URs with earlier firmware versions.
GE tracking number: 601-07