Table 6-26 Routing of the Binary Inputs (Tap-Coding Type BCD)
Example
BI1 BI2 BI3 BI4 BI5 BI6 BI7
Tap changer X X X X X X X
Meaning BCD 1 BCD 2 BCD 4 BCD 8 BCD 10 BCD 20 Moving
contact
Tap = 21 1 0 0 0 0 1
With 6 binary inputs, a maximum of 39 tap positions can be mapped with the tap-coding type of BCD. This
results in the number of tap positions from 1 to 39. If all routed binary inputs indicate 0, this is detected as tap
0. The 7 binary inputs must be numbered sequentially, for example, BI 1, BI 2, BI 3, BI 4, BI 5, BI 6, and BI 7 for
the moving contact.
Tap-coding type: BCD
Number of tap positions: 39
Number of bits f. tap code: 7
Tap-display offset: 0
Moving contact (highest binary input): Yes
Individual Tap-Coding Type (table)
With the table parameter setting, you can specify an individual Tap-coding type.
In the Representation of encoding section, select the number system in which your code table entries
will take place, alternatively:
•
Binary (2 characters)
•
Octal (8 characters)
•
Decimal (10 characters)
•
Hexadecimal (16 characters)
The selected option is valid for all inputs in the Encoding column.
If you change the number system and there are already entries in this column, these will be converted to the
new number system. The selection area gets visible as soon as you have selected the table setting in the
Tap-coding type list box.
[sccotabi-111016-01, 1, en_US]
Figure 6-114 Code Table for the Tap-Code Type table
Control Functions
6.8 Transformer Tap Changers
SIPROTEC 5, High-Voltage Bay Controller, Manual 445
C53000-G5040-C015-9, Edition 11.2017
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