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PID-3406-SETTINGS v5
Table 530: SMAI2 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
DFTReference InternalDFTRef
DFTRefGrp1
DFTRefGrp2
DFTRefGrp3
DFTRefGrp4
DFTRefGrp5
DFTRefGrp6
DFTRefGrp7
DFTRefGrp8
DFTRefGrp9
DFTRefGrp10
DFTRefGrp11
DFTRefGrp12
External DFT ref
- - InternalDFTRef DFT reference
ConnectionType Ph-N
Ph-Ph
- - Ph-N Input connection type
AnalogInputType Voltage
Current
- - Voltage Analog input signal type
Table 531: SMAI2 Non group settings (advanced)
Name Values (Range) Unit Step Default Description
Negation Off
NegateN
Negate3Ph
NeN
- - Off Negation
MinValFreqMeas 5 - 200 % 1 10 Limit for frequency calculation in % of
UBase
16.8.5 Operation principle
SEMOD55746-4 v13
Every Signal matrix for analog inputs function (SMAI) can receive four analog
signals (three phases and one neutral or residual value), either voltage or current,
see figure
300 and figure 301 . SMAI outputs give information about every aspect
of the 3ph analog signals acquired (phase angle, RMS value, frequency and
frequency derivates etc. – 244 values in total). The BLOCK input will force all
outputs to value zero if BLOCK is TRUE (1).
System phase rotation and frequency are defined using the PhaseRotation and
Frequency settings in the primary system values PRIMVAL function. Logic 1 in
the REVROT input to the SMAI function means that the phase rotation is changed
relative to the set
PhaseRotation in PRIMVAL.
The output signal AI1 to AI4 are single phase outputs which directly represent the
four inputs GRPxL1, GRPxL2, GRPxL3 and GRPxN, x=1-12. GxN (x = 1-12) is
always calculated residual sum from the first three inputs. A3P is grouped, three-
phase information containing all relevant information about four connected inputs.
1MRK 505 384-UEN A
Section 16
Basic IED functions
Breaker protection REQ650 2.2 IEC 671
Technical manual