GUID-D69015D7-192B-45DE-A67A-96F582CF09C0 v3
Table 27. Negative sequence based overcurrent function DNSPTOC (46)
Function
Range or value
Accuracy
Operate current
(2.0 - 5000.0) % of
IBase
± 1.0% of I
r
at I <I
n
± 1.0% of I at I > I
n
Reset ratio
> 95 %
-
Low voltage level for memory
(0.0 - 5.0) % of
VBase
< ± 0.5% of V
n
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
IP14271-1 v1
M13290-1 v6
Table 28. Two step undervoltage protection UV2PTUV (27)
Function
Range or value
Accuracy
Operate voltage, low and high step
(1–100)% of
VBase
± 0.5% of V
n
Reset ratio
<105%
-
Inverse time characteristics for low and high step, see table
-
See table
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 2 to 0.5 x V
set
-
Reset time, pickup function
40 ms typically at 0.5 to 2 x V
set
-
Critical impulse time
10 ms typically at 2 to 0 x V
set
-
Impulse margin time
15 ms typically
-
Busbar protection REB650
1MRK 505 265-BUS B
Version 1.1 ANSI
ABB Power Grids
31
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