ABB Relion 670 Series Product Manual page 75

Busbar protection REB670
Version 2.2
Table 50. Capacitor bank protection CBPGAPC
Function
Operate value, overcurrent
Reset ratio, overcurrent
Start time, overcurrent, at 0.5 x Iset
to 2 x Iset
Reset time, overcurrent, at 2 x Iset to
0.5 x Iset
Critical impulse time, overcurrent
protection start
Impulse margin time, overcurrent
protection start
Operate value, undercurrent
Reset ratio, undercurrent
Operate value, reconnection inhibit
function
Operate value, reactive power
overload function
Operate value, voltage protection
function for harmonic overload
(Definite time)
Operate value, voltage protection
function for harmonic overload
(Inverse time)
Inverse time characteristic
Maximum trip delay, harmonic
overload IDMT
Minimum trip delay, harmonic
overload IDMT
Independent time delay, overcurrent
at 0 to 2 x Iset
Independent time delay, undercurrent
at 2 x Iset to 0
Independent time delay, reactive
power overload function at 0 to 2 x
QOL>
Independent time delay, harmonic
overload at 0 to 2 x HOL>
Hitachi Power Grids
GUID-6A7DA510-E145-4C5B-A7DC-97BC4258E621 v10
Range or value
(10-900)% of lBase
>95% at (100-900)% of IBase
Min. = 5 ms
Max. = 20 ms
Min. = 25 ms
Max. = 45 ms
2 ms typically at 0.5 x Iset to 2 x Iset
1 ms typically at 0.5 x Iset to 10 x Iset
10 ms typically
(5-100)% of IBase
<105% at (30-100)% of IBase
(4-1000)% of IBase
(10-900)%
(10-500)%
(80-200)%
According to IEC 60871-1 (2005) and
IEEE/ANSI C37.99 (2000)
(0.05-6000.00) s
(0.05-60.00) s
(0.00-6000.00) s
(0.00-6000.00) s
(1.00-6000.00) s
(0.00-6000.00) s
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Accuracy
±2.0% of I at I ≤ I
r r
±2.0% of I at I > I
r
-
-
-
-
±2.0% of I
r
-
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
±1.0% of S at S ≤ S
r r
±1.0% of S at S > S
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
±20% or ±200 ms whichever is greater
±20% or ±200 ms whichever is greater
±20% or ±200 ms whichever is greater
±0.2% or ±30 ms whichever is greater
±0.2% or ±60 ms whichever is greater
±0.2% or ±100 ms whichever is greater
±0.2% or ±35 ms whichever is greater
1MRK 505 373-BEN P
75