Thytronic DMC3S - Page 88

88
DMC3S - Manual - 08 - 2021
To ensure that the breaker closes in perfect synchronisation, the relay must send the close command
when the phase difference is = 8.6 degrees and V
2
is delayed relative to V
1
.
Functional block (Block3)
If the voltmetric measurement chain fails (function 74VT tripped), the synchronisation control func-
tion is blocked.
- 0.12
- 0.10 - 0.08 - 0.06 - 0.04 - 0.02
- 0,124 - 0,122
0,120
- 0,118 - 0,116
0,120 s
Close command
close angle advance 8.6 °
f1 = 50 Hz
f2 = 50.2 Hz