ABB REG650 - Technical Data; Voltage-Restrained Time Overcurrent Protection VRPVOC; Functionality; Identification

8.9.8 Technical data
Table 146: NS2PTOC technical data
Function
Range or value Accuracy
Operate value, step 1
and 2, negative
sequence
overcurrent
(3-500)% of
IBase ± 1.0% of I
r
at I < I
r
± 1.0% of I at I > I
r
Reset ratio, step 1
and 2
>95% -
Operate time, start 30 ms typically at 0 to 2 x I
set
20 ms typically at 0 to 10 x I
set
-
Reset time, start 40 ms typically at 2 to 0 x I
set
-
Time characteristics Definite or Inverse -
Inverse time
characteristic step 1,
2
2
I t K=
K=1.0-99.0 ± 3% or ± 40 ms
1 ≤ K ≤ 20
Reset time, inverse
characteristic step 1,
2
2
I t K=
K=0.01-20.00 ± 10% or ± 50 ms
1 ≤ K ≤ 20
Maximum trip delay,
step 1 IDMT
(0.00-6000.00) s ± 0.5% ± 25 ms
Minimum trip delay,
step 1 IDMT
(0.000-60.000) s ± 0.5% ± 25 ms
Timers (0.00-6000.00) s ± 0.5% ± 25 ms
8.10 Voltage-restrained time overcurrent protection
VRPVOC
8.10.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Voltage-restrained time overcurrent
protection
VRPVOC I>/U< 51V
8.10.2 Functionality
Voltage-restrained time overcurrent protection (VRPVOC) function is recommended
as a backup protection for generators.
The overcurrent protection feature has a settable current level that can be used either
with definite time or inverse time characteristic. Additionally, it can be voltage
controlled/restrained.
1MRK 502 048-UEN A Section 8
Current protection
249
Technical manual