ABB REG670 - Settings

20.18.4 Settings
Settings DFTRefExtOut and DFTReference shall be set to default
value InternalDFTRef if no VT inputs are available.
Table 871: 3PHSUM Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Value
groups
SummationType Group1+Group2
Group1-Group2
Group2-Group1
-(Group1+Group2)
-
- Group1+Group2 Summation type
DFTReference InternalDFTRef
DFTRefGrp1
External DFT ref
-
- InternalDFTRef DFT reference
DFTRefExtOut InternalDFTRef
DFTRefGrp1
External DFT ref
-
- InternalDFTRef DFT reference for external output
Table 872: 3PHSUM Non group settings (advanced)
Name
Values (Range) Unit Step Default Description
FreqMeasMinVal 5 - 200 % 1 10 Amplitude limit for frequency calculation in
% of UBase
20.18.5 Operation principle
Summation block 3 phase 3PHSUM receives the three-phase signals from Signal
matrix for analog inputs function (SMAI). In the same way, the BLOCK input will
reset all the outputs of the function to 0.
20.19 Denial of service DOS
20.19.1 Functionality
The Denial of service functions (DOSFRNT, DOSLANAB and DOSLANCD) are
designed to limit overload on the IED produced by heavy Ethernet network traffic.
The communication facilities must not be allowed to compromise the primary
functionality of the device. All inbound network traffic will be quota controlled so that
too heavy network loads can be controlled. Heavy network load might for instance be
the result of malfunctioning equipment connected to the network.
1MRK502052-UEN B Section 20
Basic IED functions
1137
Technical manual