Name Values (Range) Unit Step Default Description
tPRCrv4 0.005 - 3.000 - 0.001 0.500 Parameter PR for customer programmable
curve step 4
tTRCrv4 0.005 - 100.000 - 0.001 13.500 Parameter TR for customer programmable
curve step 4
tCRCrv4 0.1 - 10.0 - 0.1 1.0 Parameter CR for customer programmable
curve step 4
7.5.6 Technical data
Table 207: NS4PTOC (46I2) technical data
Function Range or value Accuracy
Operate value, negative
sequence current, step 1-4
(1-2500)% of
lBase
± 1.0% of I
n
at I £ I
n
± 1.0% of I at I > I
n
Reset ratio > 95% -
Timers (0.000-60.000) s ± 0.5% ± 10 ms
Inverse characteristics, see
table 728, table 729 and table 730
18 curve types See table 728, table 729 and
table 730
Minimum operate current for
step 1 - 4
(1.00 - 10000.00)% of
IBase
± 1.0% of I
n
at I < I
n
± 1.0% of I at I > I
n
Operate value, negative current
for directional release
(1–100)% of
IBase
± 1.0% of I
n
Relay characteristic angle (-180 to 180) degrees ± 2.0 degrees
Minimum polarizing voltage (1–100)% of
VBase
± 0.5% of V
n
Minimum polarizing current (2-100)% of
IBase
±1.0% of I
n
Real part of negative sequence
source impedance used for
current polarization
(0.50-1000.00) W/phase -
Imaginary part of negative
sequence source impedance
used for current polarization
(0.50–3000.00) W/phase -
Operate time, pickup function 25 ms typically at 0.5 to 2 x I
set
-
Reset time, pickup function 25 ms typically at 2 to 0.5 x I
set
-
Critical impulse time, pickup
function
10 ms typically at 0 to 2 x I
set
-
Impulse margin time, pickup
function
15 ms typically -
Transient overreach <10% at τ = 100 ms -
1MRK505222-UUS C Section 7
Current protection
435
Technical reference manual
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