Monitored Data - ABB Relion Technical Manual

Section 8
Current protection
Name Values (Range)
K1 1.0 - 99.0
t1Min 0.000 - 60.000
t1Max 0.00 - 6000.00
ResetMultip1 0.01 - 20.00
OpStep2 Disabled
Enabled
I2-2> 3 - 500
t2 0.00 - 6000.00
tResetDef2 0.000 - 60.000
Table 144: NS2PTOC (46I2) Non group settings (basic)
Name Values (Range)
GlobalBaseSel 1 - 6
8.9.6
8.9.7
268
Unit Step
s 0.1
s 0.001
s 0.01
- 0.01
- -
%IB 1
s 0.01
s 0.001
Unit Step
- 1

Monitored data

Table 145: NS2PTOC (46I2) Monitored data
Name Type
NSCURR REAL
Operation principle
The negative sequence time overcurrent protection for machines (NS2PTOC, 46I2)
function directly measures the amplitude of the negative phase sequence component of the
measured current. NS2PTOC (46I2) sets the PICKUP, PU_ST1 or PU_ST2 outputs active
and starts to count trip time only when the measured negative sequence current value rises
above the set value of parameters I2-1> or I2-2> respectively.
To avoid oscillation in the output signals, a certain hysteresis has been included. For both
steps, the reset ratio is 0.97.
Step 1 of NS2PTOC (46I2) can operate in the Definite Time (DT) or Inverse Time (IDMT)
mode depending on the selected value for the CurveType1 parameter. If CurveType1=
Definite, NS2PTOC (46I2) operates with a Definite Time Delay characteristic and if
Default Description
10.0 Neg. seq. capability value of generator for step
1, in sec
5.000 Minimum trip time for inverse delay of step 1, in
sec
1000.00 Maximum trip delay for step 1, in sec
1.00 Reset multiplier for K1, defines reset time of
inverse curve
Enabled Enable execution of step 2
10 Step 2 Neg. Seq. Current pickup level, in % of
IBase
10.00 Definite time delay for trip of step 2, in sec
0.000 Time delay for reset of definite timer of step 2,
in sec
Default Description
1 Selection of one of the Global Base Value
groups
Values (Range) Unit
- A
1MRK 502 048-UUS A
Description
Negative sequence current in
primary amps
Technical manual