IEC05000465 V2 EN-US
Figure 69: Typical connection for STBPTOC in 1½-breaker arrangement.
7.10.3 Setting guidelines
M12909-3 v5
The parameters for Stub protection STBPTOC are set via the local HMI or PCM600.
The following settings can be done for the stub protection.
GlobalBaseSel
: Selects the global base value group used by the function to define (
IBase
),
(
UBase
) and (
SBase
).
Operation
:
Off
/
On
ReleaseMode
: This parameter can be set
Release
or
Continuous
. With the
Release
setting the
function is only active when a binary release signal RELEASE into the function is activated. This
signal is normally taken from an auxiliary contact (normally closed) of the line disconnector
and connected to a binary input RELEASE of the IED. With the setting
Continuous
the function
is activated independent of presence of any external release signal.
I>
: Current level for the Stub protection, set in % of
IBase
. This parameter should be set so that
all faults on the stub can be detected. The setting should thus be based on fault calculations.
t
: Time delay of the operation. Normally the function shall be instantaneous.
7.11 Pole discordance protection CCPDSC
IP14516-1 v5
1MRK 511 358-UEN A Section 7
Current protection
151
Application manual
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