THOMSON MEC 320 - GENSET CONTROLLER - Page 33

MEC 320 GENSET CONTROLLER
PM079 Rev 0 07/06/08 33 Thomson Technology
Example 1 (6590 Mains failure voltage)
Start engine and open MB:
Example 2 (6590 Mains failure voltage)
Start engine:
Conditions for breaker operations
The breaker sequences react depending on the breaker positions and the frequency/voltage
measurements.
GB On
MB On
Mains failure
detected
Gen start seq
t
FD
Gen stop seq
Mains OK
Mains OK
t
FOD
Gen running
Gen f/U OK
t
MCB
t
FU
t
GBC
GB On
MB On
Mains failure
detected
Gen start seq
t
FD
Gen
stop seq
Mains OK
Mains OK
t
FOD
t
FU
t
MBC
Gen running
Gen f/U OK