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

1MRK 502 048-UEN A
8.9.8
8.10
8.10.1
8.10.2
Technical manual

Technical data

Table 146: NS2PTOC technical data
Function Range or value
Operate value, step 1 (3-500)% of
and 2, negative
sequence
overcurrent
Reset ratio, step 1 >95%
and 2
Operate time, start 30 ms typically at 0 to 2 x I
20 ms typically at 0 to 10 x I
Reset time, start 40 ms typically at 2 to 0 x I
Time characteristics Definite or Inverse
Inverse time K=1.0-99.0
characteristic step 1,
2
=
I t K
2
Reset time, inverse K=0.01-20.00
characteristic step 1,
2
=
I t K
2
Maximum trip delay, (0.00-6000.00) s
step 1 IDMT
Minimum trip delay, (0.000-60.000) s
step 1 IDMT
Timers (0.00-6000.00) s
Voltage-restrained time overcurrent protection
VRPVOC

Identification

Function description
Voltage-restrained time overcurrent
protection

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.
IBase
set
set
set
IEC 61850 IEC 60617
identification identification
VRPVOC
Section 8
Current protection
Accuracy
± 1.0% of I at I < I
r r
± 1.0% of I at I > I
r
-
-
-
-
± 3% or ± 40 ms
1 ≤ K ≤ 20
± 10% or ± 50 ms
1 ≤ K ≤ 20
± 0.5% ± 25 ms
± 0.5% ± 25 ms
± 0.5% ± 25 ms
ANSI/IEEE C37.2
device number
I>/U< 51V
249