ABB REG650 - Page 48

Table 41. Voltage-restrained time overcurrent protection VRPVOC
Function Range or value Accuracy
Start overcurrent (2 - 5000)% of IBase ± 1.0% of I
r
at I<I
r
± 1.0% of I at I>I
r
Definite time delay (0.00 - 6000.00) s ± 0.5% ± 25 ms
Inverse characteristics, see table 74, table 75 and table 76 13 curve types ANSI/IEEE C37.112
IEC 60255–151
±3% or ±40 ms
0.10 ≤ k ≤ 3.00
1.5 x I
set
≤ I ≤ 20 x I
set
Operate time start overcurrent 30 ms typically at 0 to 2 x I
set
20 ms typically at 0 to 10 x I
set
-
Reset time start overcurrent 40 ms typically at 2 to 0 x I
set
-
Start undervoltage (2.0 - 100.0)% of UBase ± 0.5% of U
r
Operate time start undervoltage 30 ms typically 2 to 0 x U
set
-
Reset time start undervoltage 40 ms typically at 0 to 2 x U
set
-
High voltage limit, voltage dependent operation (30 - 100)% of UBase ± 1.0% of U
r
Reset ratio, overcurrent > 95% -
Reset ratio, undervoltage < 105% -
Overcurrent:
Critical impulse time
Impulse margin time
10 ms typically at 0 to 2 x I
set
15 ms typically
-
Voltage protection
Table 42. Two step undervoltage protection UV2PTUV
Function
Range or value Accuracy
Operate voltage, low and high step (1–100)% of UBase ± 0.5% of U
r
Reset ratio <102% -
Inverse time characteristics for low and high step, see table 78 - See table 78
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, start function 30 ms typically at 1.2 to 0.5U
set
-
Reset time, start function 40 ms typically at 0.5 to 1.2 xU
set
-
Critical impulse time 10 ms typically at 1.2 to 0.8 x U
set
-
Impulse margin time 15 ms typically -
Generator protection REG650
1MRK 502 050-BEN B
Product version: 1.3
48 ABB