Setting Guidelines; Pole Discordance Protection Ccpdsc - ABB Relion REC670 Applications Manual

1MRK 511 358-UEN A
IEC05000465 V2 EN-US
Figure 69: Typical connection for STBPTOC in 1½-breaker arrangement.
7.10.3

Setting guidelines

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
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

Application manual
Section 7
Current protection
M12909-3 v5
Continuous the function
IP14516-1 v5
151