ABB REL650 - Technical Data; Voltage-Restrained Time Overcurrent Protection VRPVOC; Function Block; Functionality

7.9.8 Technical data
M13279-1 v10
Table 132: CCPDSC technical data
Function
Range or value Accuracy
Operate current (0–100)% of IBase ±1.0% of I
r
Independent time delay
between trip condition and trip
signal
(0.000-60.000) s
±0.2% or ± 30 ms whichever
is greater
7.10 Voltage-restrained time overcurrent protection
VRPVOC
GUID-613620B1-4092-4FB6-901D-6810CDD5C615 v4
7.10.1 Identification
GUID-7835D582-3FF4-4587-81CE-3B40D543E287 v4
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Voltage-restrained time overcurrent
protection
VRPVOC I>/U< 51V
7.10.2 Functionality
GUID-935E1CE8-601F-40E2-8D22-2FF68420FADF v6
Voltage-restrained time overcurrent protection (VRPVOC) function can be used as
generator backup protection against short-circuits.
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.
One undervoltage step with definite time characteristic is also available within the
function in order to provide functionality for overcurrent protection with
undervoltage seal-in.
7.10.3 Function block
GUID-6B4EB1A4-2226-4397-A6FD-14F9DD02B12E v4
VRPVOC
I3P*
U3P*
BLOCK
BLKOC
BLKUV
TRIP
TROC
TRUV
START
STOC
STUV
IEC12000184-1-en.vsd
IEC12000184 V1 EN-US
Figure 121: VRPVOC function block
1MRK 506 382-UEN A Section 7
Current protection
Line distance protection REL650 2.2 IEC 251
Technical manual