ABB REG650 Product Manual page 47

Generator protection REG650
Product version: 1.3
Table 39. Accidental energizing protection for synchronous generator AEGGAPC
Function
Operate value, overcurrent
Reset ratio, overcurrent
Transient overreach, overcurrent function
Critical impulse time, overcurrent
Impulse margin time, overcurrent
Operate value, undervoltage
Critical impulse time, undervoltage
Impulse margin time, undervoltage
Operate value, overvoltage
Timers
Table 40. Negative sequence time overcurrent protection for machines NS2PTOC
Function
Operate value, step 1 and 2, negative sequence overcurrent
Reset ratio, step 1 and 2
Operate time, start
Reset time, start
Time characteristics
Inverse time characteristic step 1,
Reset time, inverse characteristic step 1,
Maximum trip delay, step 1 IDMT
Minimum trip delay, step 1 IDMT
Timers
ABB
2
=
I t K
2
2
=
I t K
2
Range or value
(5-900)% of IBase
>95%
<20% at τ = 100 ms
10 ms typically at 0 to 2 x I
set
15 ms typically
(2-150)% of UBase
10 ms typically at 2 to 0 x U
set
15 ms typically
(2-200)% of UBase
(0.000-60.000) s
Range or value
IBase
(3-500)% of
>95%
30 ms typically at 0 to 2 x I
set
20 ms typically at 0 to 10 x I
set
40 ms typically at 2 to 0 x I
set
Definite or Inverse
K=1.0-99.0
K=0.01-20.00
(0.00-6000.00) s
(0.000-60.000) s
(0.00-6000.00) s
1MRK 502 050-BEN B
Accuracy
± 1,0% of I at I<I
r r
± 1.0% of I at I>I
r
-
-
-
-
± 0.5% of U at U<U
r r
± 0.5% of U at U>U
r
-
-
± 0.5% of U at U<U
r r
± 0.5% of U at U>U
r
± 0.5% ± 25 ms
Accuracy
± 1.0% of I at I < I
r r
± 1.0% of I at I > I
r
-
-
-
-
± 3% or ± 40 ms
1 ≤ K ≤ 20
± 10% or ± 50 ms
1 ≤ K ≤ 20
± 0.5% ± 25 ms
± 0.5% ± 25 ms
± 0.5% ± 25 ms
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