'(& )( )'& &) ( &!& ")& &$(( $#
Ć
%&( $# #)" &&#$
6 - 12
Siemens AG
⋅
May 1998
!!
All operational parameters which start with address
6XXX are settings and can be read out and changed
during normal operation. After completion of the paĆ
rameter changing process, a restart is initiated.
Read-out of parameters can be performed without
the input of a codeword either by paging or by direct
addressing. The address selection is supported by
function keys.
Changing of parameters can only be done after the
codeword "987" has been entered.
!! ! " ! #
!!
The busbar differential protection represents the main
function of the7SS52.
!! ! " ! !
The parameters for the pick-up characteristic consist
of
1. differential current limit
> Diff and
2. stabilizing factor STAB FAC.
These values can be set individually for the bus-secĆ
tion specific protection and the check zone.
Y
B
6 0 0 0 C H A N G E
S E T T I N G S ?
Y
B
6 1 0 0 S E T T I N G S :
B B – D i f f . P r o t e c ?
"
A
6 1 0 1 S T A B . F A C : B Z
= 0 . 6 5
Stabilizing factor for the bus-section specific protecĆ
tion (common for all buses)
minimum setting:
. . . . . . . . . . . . . . .
maximum setting:
. . . . . . . . . . . . . . .
"
A
6 1 0 2 I > D I F F : B Z
= 1 . 0 0 I / I n o
Diff-current limit for the bus-section specific protecĆ
tion (common for all buses)
minimum setting:
. . . . . . . . . . . . . . .
maximum setting:
. . . . . . . . . . . . . . .
no
: normalized nominal current referred to the base
CT (CT with the highest transformation ratio, see
also parameter
)
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Содержание SIPROTEC 7SS52
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