Monitored Data; Operation Principle; Zero And Negative Sequence Detection - ABB REC650 Technical Manual

1MRK 511 287-UEN A
Name Values (Range)
DU>
DI<
UPh>
IPh>
SealIn
USealln<
IDLD<
UDLD<
Table 158: SDDRFUF Non group settings (basic)
Name Values (Range)
GlobalBaseSel
9.2.6
9.2.7
9.2.7.1
Technical manual
Unit
1 - 100 %UB
1 - 100 %IB
1 - 100 %UB
1 - 100 %IB
Off -
On
1 - 100 %UB
1 - 100 %IB
1 - 100 %UB
Unit
1 - 6 -

Monitored data

Table 159: SDDRFUF Monitored data
Name
3I0
3I2
3U0
3U2

Operation principle

Zero and negative sequence detection

The zero and negative sequence function continuously measures the currents and
voltages in all three phases and calculates: (see figure 90)
Secondary system supervision
Step Default
1 60
1 15
1 70
1 10
- On
1 70
1 5
1 60
Step Default
1 1
Type Values (Range)
REAL -
REAL -
REAL -
REAL -
Section 9
Description
Operate level of change in phase voltage
in % of UBase
Operate level of change in phase current
in % of IBase
Operate level of phase voltage in % of
UBase
Operate level of phase current in % of
IBase
Seal in functionality Off/On
Operate level of seal-in phase voltage in
% of UBase
Operate level for open phase current
detection in % of IBase
Operate level for open phase voltage
detection in % of UBase
Description
Selection of one of the Global Base Value
groups
Unit Description
A Magnitude of zero
sequence current
A Magnitude of negative
sequence current
kV Magnitude of zero
sequence voltage
kV Magnitude of negative
sequence voltage
197