Island Operation - Deif Multi-line 2 Designers Reference Handbook

AGC
See general semi-auto mode description on page 19.
Test mode description
See general test mode description valid for all gen-set modes on page 20.
Manual mode description
See general manual mode description valid for all gen-set modes on page 21.
Block mode description
See general block mode description valid for all gen-set modes on page 21.

Island operation

Auto mode description
The unit automatically starts the gen-set and closes the generator breaker at a digital start
command. When the stop command is given, the generator breaker is tripped, and the gen-set
will be stopped after a cooling-down period. The start and stop commands are used by activating
and deactivating a digital input. If the time dependent start/stop commands are to be used, then
the auto mode must also be used. In this case, the digital input 'auto start/stop' cannot be used.
Semi-auto mode description
When the generator breaker is closed, the unit will use the nominal frequency as setpoint for the
speed governor. If AVR control (option D1) is selected, the nominal voltage is used as setpoint.
See general semi-auto mode description on page 19.
Test mode description
See general test mode description valid for all gen-set modes on page 20.
Manual mode description
See general manual mode description valid for all gen-set modes on page 21.
Block mode description
See general block mode description valid for all gen-set modes on page 21.
DEIF A/S
Designer's Reference Handbook
Page 13 of 168