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