ABB REQ650 - Page 70

Table 38. Negative sequence based overcurrent function DNSPTOC
Function Range or value Accuracy
Operate current (2.0 - 5000.0) % of IBase ± 1.0% of I
r
at I <I
r
± 1.0% of I at I > I
r
Reset ratio > 95 % -
Low voltage level for memory (0.0 - 5.0) % of UBase < ± 0.5% of U
r
Relay characteristic angle (-180 - 180) degrees ± 2.0 degrees
Relay operate angle (1 - 90) degrees ± 2.0 degrees
Timers (0.00 - 6000.00) s ± 0.5% ± 25 ms
Operate time, non-directional 30 ms typically at 0 to 2 x I
set
20 ms typically at 0 to 10 x I
set
-
Reset time, non-directional 40 ms typically at 2 to 0 x I
set
-
Operate time, directional 30 ms typically at 0 to 2 x I
set
20 ms typically at 0 to 10 x I
set
-
Reset time, directional 40 ms typically at 2 to 0 x I
set
-
Critical impulse time 10 ms typically at 0 to 2 x I
set
2 ms typically at 0 to 10 x I
set
-
Impulse margin time 15 ms typically -
Dynamic overreach < 10% at t = 300 ms -
Voltage protection
Table 39. 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 <105% -
Inverse time characteristics for low
and high step, see table 77
- See table 77
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 0.5 x U
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 -
Breaker protection REQ650 1MRK 505 283-BEN -
Product version: 1.2
70 ABB