ABB REB670 - Basic IED Functions; Busbar Differential Protection

Basic IED functions
IEC 61850 Function description
Basic functions included in all products
IntErrorSig Self supervision with internal event list 1
TIME Time and synchronization error 1
TimeSynch Time synchronization 1
ActiveGroup Parameter setting groups 1
Test Test mode functionality 1
ChangeLock Change lock function 1
TerminalID IED identifiers 1
Productinfo Product information 1
MiscBaseCommon Misc Base Common 1
IEDRuntimeComp IED Runtime Comp 1
RatedFreq Rated system frequency 1
SMBI Signal Matrix for binary inputs 40
SMBO Signal Matrix for binary outputs 40
SMMI Signal Matrix for mA inputs 4
SMAI Signal Matrix for analog inputs 24
Sum3Ph Summation block 3 phase 12
LocalHMI Parameter setting function for HMI in PCM600 1
LocalHMI Local HMI signals 1
AuthStatus Authority status 1
AuthorityCheck Authority check 1
AccessFTP FTP access with password 1
SPACommMap SPA communication mapping 1
DOSFRNT Denial of service, frame rate control for front port 1
DOSOEMAB Denial of service, frame rate control for OEM port AB 1
DOSOEMCD Denial of service, frame rate control for OEM port CD 1
3. Differential protection
The function consists of differential protection algorithm,
sensitive differential protection algorithm, check zone
algorithm, open CT algorithm and two supervision algorithms.
Busbar differential protection
This protection function is intended for fast and selective
tripping of faults within protected zone. For each current
input, the CT ratio can be set from the front HMI or via the
parameter-setting tool, PCM600. In this way adaptation to
different CT ratios is provided in the simplest way. The
minimum pick-up value for the differential current is then set
to give a suitable sensitivity for all internal faults. This setting
is made directly in primary amperes. For busbar protection
applications typical setting value for the minimum differential
operating current is from 50% to 150% of the biggest CT.
The settings can be changed from the front HMI or via the
parameter-setting tool, PCM600.
All current inputs are indirectly provided with a restraint
feature. The operation is based on the well-proven RADSS
percentage restraint stabilization principle, with an extra
stabilization feature to stabilize for very heavy CT saturation.
Stability for external faults is guaranteed if a CT is not
Busbar protection REB670
1MRK505212-BEN E
Pre-configured
Product version: 1.2
12 ABB