'(& )( )'& &) ( &!& ")& &$(( $# Ć %&( $# #)" &&#$
6 - 17
Siemens AG ⋅ May 1998
Y
B
6 7 0 0 S E T T I N G S :
I > B F B a y 0 1 – 4 8 ?
Start of the block for feeder-selective setting of the
current threshold for recognition of breaker failure and
for command reset
"
A
6 7 X X I > B F B A Y X X
= . 5 0 I / I N
Setting address of the current threshold for recogniĆ
tion of breaker failure in feeder XX (1 to 48)
minimum setting: 0.10 /
N
...........
maximum setting: 2.00 /
N
...........
N
^ Nominal current of the feeder CT
6.2.4.3 Settings for the supervisory functions - block 63
The parameters for this function can be divided into
four groups:
1. Supervision of the breaker failure protection reĆ
lease (refer to chapter 4.7.8.5)
2. Isolator supervision (see chapter 4.7.8.4)
3. Supervision function for the linearized current
transformers (refer to chapter 4.7.8.7)
4. Supervision function from the internal cyclic tests
(see chapter 4.7.8.8)
Y
B
6 3 0 0 S E T T I N G S :
S u p e r v i s i o n ?
6.2.4.3.1 Settings for breaker failure protection
supervision
"
A
6 3 1 4 M O N T B F C I
= 1 . 0 0 s
Supervision time for the signal duration of the CBF
release
minimum setting 0.02 s..............
maximum setting: 10.00 s............
"
A
6 3 1 5 F L T T B F C I
= . 0 6 s
Time delay after which the CBF release signal is anaĆ
lysed
minimum setting: 0.06 s.............
maximum setting: 1.00 s.............
(refer to chapter 4.7.8.5)
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