ABB RELION 630 Series Product Manual page 53

Generator Protection and Control
REG630
Product version: 1.3
Control functions
Table 115. Synchrocheck (SYNCRSYN)
Characteristic
Operation accuracy
Reset time
Reset ratio
Operate time accuracy
Table 116. Tap changer control with voltage regulator (OLATCC)
Characteristic
1)
Operation accuracy
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Reset ratio for control operation
Reset ratio for analog based blockings (except run back raise voltage
blocking)
1) Default setting values used
ABB
Value
At the frequency f = f
Voltage: ±1.0% or ±0.002 × U
Frequency: ±10 mHz
Phase angle ±2°
<50 ms
Typically 0.96
+90ms/0 ms
Value
At the frequency f = f
Differential voltage Ud:
±1.0% of the measured value or ±0.004 × U
× U
Operation value:
±1.0% of the U
±1.0% of the set value or 0.11 s
1)
±15.0% of the set value or 0.15 s
1)
(at theoretical B in range of 1.1...5.0) Also note fixed minimum operate
time (IDMT) 1 s
Typically 0.80 (1.20)
Typically 0.96 (1.04)
n
n
n
)
n
or ±0.004 × U for U
d n
1MRS757583 C
(in measured voltages <2.0
n
= 1.0 × U
s n
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