Table 185. Synchronism and energizing check (SECRSYN) main settings
Parameter
Function
Value (Range)
Step
Live dead mode
SECRSYN
-1 = Off
1 = Both Dead
2 = Live L, Dead B
3 = Dead L, Live B
4 = Dead Bus, L Any
5 = Dead L, Bus Any
6 = One Live, Dead
7 = Not Both Live
-
Difference voltage
SECRSYN
0.01...0.50 × U
n
0.01
Difference frequency
SECRSYN
0.0002...0.1000 × f
n
0.0001
Difference angle
SECRSYN
5...90°
1
Synchro check mode
SECRSYN
1 = Off
2 = Synchronous
3 = Asynchronous
-
Dead line value
SECRSYN
0.1...0.8 × U
n
0.1
Live line value
SECRSYN
0.2...1.0 × U
n
0.1
Max energizing V
SECRSYN
0.50...1.15 × U
n
0.01
Control mode
SECRSYN
1 = Continuous
2 = Command
-
Close pulse
SECRSYN
200...60000 ms
10
Phase shift
SECRSYN
-180...180°
1
Minimum Syn time
SECRSYN
0...60000 ms
10
Maximum Syn time
SECRSYN
100...6000000 ms
10
Energizing time
SECRSYN
100...60000 ms
10
Closing time of CB
SECRSYN
40...250 ms
10
Table 186. Tap changer control with voltage regulator (OL5ATCC)
Characteristic
Value
Operation accuracy
1)
Depending on the frequency of the measured current: f
n
±2 Hz
Differential voltage U
d
= ±0.5% of the measured value or ±0.005 × U
n
(in
measured voltages <2.0 × U
n
)
Operation value = ±1.5% of the U
d
for Us = 1.0 × U
n
Operate time accuracy in definite time mode
2)
+4.0%/-0% of the set value
Operate time accuracy in inverse time mode
2)
+8.5%/-0% of the set value
(at theoretical B in range of 1.1…5.0)
Also note fixed minimum operate time (IDMT) 1 s
Reset ratio for control operation
Reset ratio for analog based blockings (except run back raise voltage
blocking)
Typically 0.80 (1.20)
Typically 0.96 (1.04)
1)
Default setting values used
2)
Voltage before deviation = set
Band center voltage
1MRS759144 A
REX640
Product version: 1
88
ABB
Summary of Contents for RELION REX640
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