GE Multilin DTP-B, Instruction Manual, Page: 27 / 90

4. FUNCTIONS DESCRIPTION
4-4 DTP-B Digital Transformer Protection GEK-106243E
4.4 SETTINGS TABLES
The DTP has three independent settings tables, stored in non-volatile memory, so they are kept even if there is no
auxiliary voltage. Only one settings table is active each time, and this is the one used by the system for performing
the different functions.
Of all the existing settings in a DTP unit, there are several generic groups (General Settings, Active Table, Self
Settings, Oscillography Masks and Permissions for each Function), which are common to all the settings tables,
while the Differential Function Settings group, is accessed separately for each table.
There is a setting called “ACTIVE TABLE” that allows to select the active settings table in each moment.
There is also a way to change the settings table using up to 2 digital inputs, called “TABLE 0 SELECTION” AND
“TABLE 1 SELECTION”. These allow up to 4 different combinations, from 0 to 3. In order to operate this way, the
inputs must be configured to perform the settings table change. For applications requiring fewer tables (up to 2),
only one input needs to be used.
The selected combination is obtained from the binary codification of the two mentioned inputs (please refer to the
following table). “0” means selecting the table indicated in the “ACTIVE TABLE” setting, and numbers 1 to 3 select
tables 1 to 3 respectively.
Number Selection Input 1 Selection Input 2 Active Table
0 0 0 Selected by setting
1 0 1 1
2 1 0 2
3 1 1 3
NOTE: If the table control option is selected by these inputs, this selection will have priority over the “ACTIVE
TABLE” setting, and the used table will be determined by the status of the digital inputs.