Control functions
Table 68. Synchrocheck (SECRSYN)
Characteristic
Value
Operation accuracy
Depending on the frequency of the voltage measured: f
n
±1 Hz
Voltage: ±3.0% of the set value or ±0.01 x U
n
Frequency: ±10 mHz
Phase angle: ±3°
Reset time
< 50 ms
Reset ratio
Typical 0.96
Operate time accuracy in definite time mode
±1.0% of the set value or ±20 ms
Table 69. 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 xUn
0.01
Difference frequency
SECRSYN
0.001...0.100 xFn
0.001
Difference angle
SECRSYN
5...90 deg
1
Synchrocheck mode
SECRSYN
1=Off
2=Synchronous
3=Asynchronous
Control mode
SECRSYN
1=Continuous
2=Command
Dead line value
SECRSYN
0.1...0.8 xUn
0.1
Live line value
SECRSYN
0.2...1.0 xUn
0.1
Close pulse
SECRSYN
200...60000 ms
10
Max energizing V
SECRSYN
0.50...1.15 xUn
0.01
Phase shift
SECRSYN
-180...180 deg
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
Transformer Protection and Control
1MRS757846 A
RET620
Product version: 2.0
ABB
41