Table 72. Local acceleration logic (DSTPLAL)
Characteristic
Value
Operation accuracy
At the frequency f = f
n
±1.5% of the set value or ±0.002 × I
n
Operate time accuracy
±1.0% of the set value or ±20 ms
Suppression of harmonics
DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,
…
Table 73. Local acceleration logic (DSTPLAL) main settings
Parameter
Function
Value (Range)
Step
Load current value
DSTPLAL
0.01...1.00 pu
0.01
Minimum current
DSTPLAL
0.01...1.00 pu
0.01
Minimum current
time
DSTPLAL
0.000...60.000 s
0.001
Load release on time
DSTPLAL
0.000...60.000 s
0.001
Load release off Tm
DSTPLAL
0.000...60.000 s
0.001
Loss of load Op
DSTPLAL
Disabled
Enabled
-
Zone extension
DSTPLAL
Disabled
Enabled
-
Table 74. Communication logic for residual overcurrent (RESCPSCH)
Characteristic
Value
Operate time accuracy
±1.0% of the set value or ±20 ms
Table 75. Communication logic for residual overcurrent (RESCPSCH) main settings
Parameter
Function
Value (Range)
Step
Scheme type
RESCPSCH
Off
Intertrip
Permissive UR
Permissive OR
Blocking
-
Coordination time
RESCPSCH
0.000...60.000 s
0.001
Carrier Min Dur
RESCPSCH
0.000...60.000 s
0.001
Feeder Protection and Control
1MRS756380 A
REF630
Product version: 1.0
Issued: 15.09.2009
52
ABB
Summary of Contents for REF630
Page 1: ...Relion 630 series Feeder Protection and Control REF630 Product Guide ...
Page 78: ...78 ...
Page 79: ......