ABB RELION 670 SERIES REG670 - Setting Parameters for Insulation Loss of Life Calculation Function (LOL1)

Parameter Value Note
CT ratio Winding 1 1000/1 A
CT ratio Winding 2 2000/1 A
CT ratio Winding 3 1000/1 A
17.10.3.2 Setting parameters for insulation loss of life calculation function (LOL1)
GUID-6869A06A-4DDC-4FB5-AC56-5463F3709862 v1
Table 73: Setting parameters for insulation loss of life calculation function (LOL1)
Setting Short Description Selected value
Operation Activation of transformer insulation loss
of life calculation function
Enabled
TrafoRating
Set the transformer rated power of the
function on which the parameters are
selected
500 MVA
TrafoType
Select the transformer number of phases Three phase
NoOfWindings
Select the transformer number of
windings
Three winding
ConstSelection
Select the standard from which the
transformer parameters should be taken
IEC
CurrSelectMode
Select the method for the determination
of current on which the load factor needs
to be calculated
Maximum
TempeUnitMode
Select the unit of temperature should be
used in the function
°C
AvailableCT
Select the available CT connections on
the windings
All windings
RatedVoltageW1
Set the winding 1 rated nominal voltage 415.0 kV
RatedVoltageW2
Set the winding 2 rated nominal voltage 230.0 kV
RatedVoltageW3
Set the winding 3 rated nominal voltage 20.0 kV
UPerTap
Set the voltage increment or decrement
between two successive tap positions
Tap changer is with
winding 2 and it is
mentioned that
voltage difference
1.67 % of winding 2
rated voltage.
3.84 kV
OilTmConstMode
Select the transformer oil time constant
mode of input to the function
Standard
OilTimeConst
Set the transformer oil time constant
when the oil time constant mode is
selected as User defined
9000.0 sec
Table continues on next page
1MRK 502 071-UUS A Section 17
Monitoring
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 725
Application manual