ANSI05000465 V2 EN
Figure 281: Typical connection for STBPTOC (50STB) in breaker-and-a-half
arrangement.
9.8.3 Setting guidelines
The parameters for Stub protection STBPTOC (50STB) 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,
VBase and SBase as applicable.
Operation: Disabled/Enabled
EnableMode: This parameter can be set Enable or Continuous. With theEnable setting the
function is only active when a binary release signal ENABLE 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 ENABLE of the IED. With the
settingContinuous the function is activated independent of presence of any external
release signal.
IPickup: 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.
1MRK 506 369-UUS - Section 9
Current protection
Line distance protection REL670 2.2 ANSI 545
Application manual
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