Local HMI setting parameters such as Language, Contrast level and Default menu
can be set here.
9.2.4.4
Functions
Main menu/Settings/General Settings/HMI/Functions
The settings here are used to determine the way information is presented in the HMI.
9.2.4.5
Change lock
Main menu/Settings/General settings/HMI/Change lock
The operation of the Change lock function can be activated or deactivated here.
9.2.5
Differential protection
9.2.5.1
Overview
This group of settings covers differential protection of transformers. The system
needs rated data to function properly. If the protection object is for example, a
transformer, the rated current and voltage per winding as well as other relevant data
will be needed. The submenus under differential protection contain many other
settable parameters such as connection type (line side or busbar side), tap positions,
CT ratings etc. The data required depends on the protected object.
9.2.5.2
Transformer differential protection, two winding T2WPDIF
Main menu/Settings/GeneralSettings/Differential protection/
TransformerDiff2Wind(PDIF,87T)/T2WPDIF:x
Parameters for available instances of T2WPDIF can be set here. These include the
rated voltages and currents for windings, the connection types, the current
transformer ratings and various other parameters.
9.2.5.3
Transformer differential protection, three winding T3WPDIF
Main menu/Settings/General settings/ Differential protection/
TransformerDiff3Wind(PDIF,87T)/T3WPDIF:x
Parameters for T3WPDIF can be set here. These include rated voltages and
currents, connection types (Y, D), current transformer ratings and various other
parameters.
1MRK504114-UEN E
Section 9
Read and change settings
49
Operator's manual
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