ABB Relion REQ650, Product Manual

Page: 66 / 91

Table 37. Two step overvoltage protection OV2PTOV (59)
Function Range or value Accuracy
Operate voltage, low and high
step (1-200)% of VBase ± 0.5% of V
n
at V < V
n
± 0.5% of V at V > V
n
Reset ratio >95% -
Inverse time characteristics for
low and high step, see table
72
- See table 72
Definite time delay, step 1 (0.00 - 6000.00) s ± 0.5% ± 25 ms
Definite time delays, step 2 (0.000-60.000) s ± 0.5% ± 25 ms
Minimum operate time, Inverse
characteristics (0.000-60.000) s ± 0.5% ± 25 ms
Operate time, pickup function 30 ms typically at 0 to 2 x V
set
-
Reset time, pickup function 40 ms typically at 2 to 0 x V
set
-
Critical impulse time 10 ms typically at 0 to 2 x V
set
-
Impulse margin time 15 ms typically -
Breaker protection REQ650 ANSI 1MRK 505 269-BUS -
Product version: 1.1 Issued: April 2011
66 ABB