Two Step Overvoltage Protection Ov2Ptov; Identification; Functionality - ABB REG650 Technical Manual

1MRK 502 034-UEN -
8.2
8.2.1
8.2.2
Technical Manual
Function Range or value
Definite time delay, (0.00 - 6000.00) s
step 1
Definite time delays, (0.000-60.000) s
step 2
Minimum operate (0.000–60.000) s
time, inverse
characteristics
Operate time, start 30 ms typically at 2 to 0.5 x U
function
Reset time, start 40 ms typically at 0.5 to 2 x U
function
Critical impulse time 10 ms typically at 2 to 0 x U
Impulse margin time 15 ms typically

Two step overvoltage protection OV2PTOV

Identification

Function description
Two step overvoltage protection

Functionality

Overvoltages may occur in the power system during abnormal conditions such as
sudden power loss, tap changer regulating failures, open line ends on long lines etc.
OV2PTOV has two voltage steps, where step 1 can be set as inverse or definite
time delayed. Step 2 is always definite time delayed.
OV2PTOV has an extremely high reset ratio to allow settings close to system
service voltage.
Voltage protection
Accuracy
± 0.5% ± 25 ms
± 0.5% ±25 ms
± 0.5% ± 25 ms
-
set
-
set
-
set
-
IEC 61850 IEC 60617
identification identification
OV2PTOV
2U>
SYMBOL-C-2U SMALLER THAN
V1 EN
Section 8
ANSI/IEEE C37.2
device number
59
223