ABB Relion 670 Series Product Manual page 87

Bay control REC670
Version 2.2
Table 61. Phase voltage differential based capacitor bank unbalanced protection SCPDPTOV
Parameters
Phase voltage differential level
Reset Ratio
Minimum Bus Voltage
Independent time delay at 0 to 2 x Uset
Reset time Delay at to 2 x Uset to 0
Inverse time characteristics
Minimum Operate Time for Inverse Curve
Operate Time, START at 0 to 2 x Uset
Reset Time, START at 2 x Uset to 0
Critical impulse time
Impulse margin time
Table 62. Voltage unbalance protection of shunt capacitor bank SCUVPTOV
Function
Neutral voltage unbalance level
Reset ratio
Minimum bus voltage
Independent time delay at 0 to 2 x U
Reset time delay at to 2 x U
Inverse time characteristics
Minimum operate time for inverse curve
Operate time, START at 0 to 2 x U
Reset time, START at 2 x U
Critical impulse time
Impulse margin time
Hitachi Power Grids
GUID-42E90A81-B44D-42C1-B9B5-CD4CDB6E376C v1
Range
(1.0-95.0) % of UBase
>90 % at (5.0 – 95.0)% of UBase
>45% at (1.0 – 5.0)% of UBase
(5.0-100.0) % of UBase
(0.00-60.00) s
(0.00-60.00) s
Programmable
(0.00-60.00) s
Min = 30 ms
Max = 60 ms
Min = 15 ms
Max = 35 ms
20 ms typically at 0 to 2 x Uset
20 ms typically
GUID-47B33B7C-0F5E-4731-A7A8-FF1BDA5D5F41 v1
Range
(1.0-95.0) % of UBase
>90% at (5.0 – 95.0)% of UBase
>45% at (1.0 – 5.0)% of UBase
(5.0 - 100.0)% of UBase
(0.00-60.00) s
set
to 0 (0.00-60.00) s
set
Programmable
(0.00-60.00) s
Min = 30 ms
set
Max = 60 ms
to 0 Min = 15 ms
set
Max = 35 ms
20 ms typically at 0 to 2 x U
20 ms typically
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Accuracy
±0.5% of Ur
-
±0.5% of Ur
±0.2% or ±70 ms whichever is greater
±0.2% or ±45 ms whichever is greater
±5.0% or ±70 ms whichever is greater
±0.2% or ±70 ms whichever is greater
-
-
-
-
Accuracy
±0.5% of Ur
-
±0.5% of Ur
±0.2% or ±65 ms, whichever is greater
±0.2% or ±45 ms, whichever is greater
±5.0% or ±65 ms, whichever is greater
±0.2% or ±65 ms, whichever is greater
-
-
-
set
-
1MRK 511 404-BEN N
87