2 Functions
38
7SD5 Manual
C53000-G1176-C169-1
The available protection and supplementary functions can be configured as
Enabled
or
Disabled
. For some functions, a choice may be presented between several
options which are explained below.
Functions configured as
Disabled
are not processed by the 7SD5. There are no in-
dications, and corresponding settings (functions, limit values) are not displayed during
setting.
Note
The functions and default settings available depend on the order variant of the device.
2.1.1.2
Control of the Main Protection Functions
Differential and Dis-
tance Protection
If the order option specifies that the 7SD5 universal line protection includes the dis-
tance protection, the device can be operated in three modes:
1. Differential protection with distance protection
2. Differential protection only
3. Distance protection only
In mode 1, the distance protection operates in parallel with the differential protection.
In this mode, both protection functions are configured (address
112
DIFF.PROTECTION
; address
115
Phase Distance
, address
116
Earth
Distance
and address
117
Dis. PICKUP
), and can be switched
ON
or
OFF
with the
addresses
1201
STATE OF DIFF.
and
1501
FCT Distance
. When the differential
protection is switched off or blocked, the distance protection continues to operate
without restrictions.
You can also operate the differential protection without distance protection (mode 2,
addresses
115
,
116
and
117
=
Disabled
). The device behaves in this case like a
normal line differential protection relay.
In mode 3, the differential protection is not configured (address
112
DIFF.PROTECTION
=
Disabled
); the distance protection operates as the main pro-
tection function (if it is activated).
2.1.1.3
Setting Notes
Configuration of
Function Scope
Configuration settings can be entered using a PC and the operating software DIGSI
®
and transferred via the operator interface on the front panel of the device or via the
service interface. For more information on working with DIGSI
®
, please refer to the
SIPROTEC
®
4 System Description /1/.
For changing configuration parameters in the device, password no. 7 is required (for
parameter set). Without the password, the settings may be read, but may not be mod-
ified and transmitted to the device.
The scope of functions with the available options is set in the
Functional Scope
dialog
box to match plant requirements.
Most settings are self-explaining. The special cases are described below.
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Содержание siprotec 7SD5
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Страница 4: ...4 7SD5 Manual C53000 G1176 C169 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 18: ...Contents 18 7SD5 Manual C53000 G1176 C169 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 34: ...1 Introduction 34 7SD5 Manual C53000 G1176 C169 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 444: ...2 Functions 444 7SD5 Manual C53000 G1176 C169 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 580: ...4 Technical Data 580 7SD5 Manual C53000 G1176 C169 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 682: ...Literature 682 7SD5 Manual C53000 G1176 C169 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 698: ...Index 698 7SD5 Manual C53000 G1176 C169 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...