AGC Designer’s Reference Handbook
DEIF A/S Page 11 of 168
Applications
The unit can be used for the applications listed in the table below.
Application Comment
Automatic Mains Failure (no back sync.) Standard
Automatic Mains Failure (with back sync.) Standard
Island operation Standard
Fixed power/base load Standard
Peak shaving Standard
Load take over Standard
Mains power export (fixed power to mains) Standard
Multiple gen-sets, load sharing Requires option G3
Multiple gen-sets, power management Requires option G5
Gen-set mode Running mode
Auto Semi Test Man Block
Automatic Mains Failure (no back sync.) X X X X X
Automatic Mains Failure (with back sync.) X X X X X
Island operation X X X X
Fixed power/base load X X X X X
Peak shaving X X X X X
Load take over X X X X X
Mains power export X X X X X
Multiple gen-sets, load sharing X X X X
Multiple gen-sets, power management X X X X X
AMF (no back synchronisation)
Auto mode description
The unit automatically starts the gen-set and switches to generator supply at a mains failure
after an adjustable delay time. It is possible to adjust the unit to change to gen-set operation in
two different ways.
1. The mains breaker will be opened at gen-set start-up.
2. The mains breaker will remain closed, until the gen-set is running, and the gen-set
voltage and frequency is OK.
In both cases, the generator breaker will be closed, when the generator voltage and frequency is
OK, and the mains breaker is open.
When the mains returns, the unit will switch back to mains supply and cool down and stop the
gen-set. The switching back to mains supply is done without back synchronisation, when the
adjusted ‘mains OK delay’ has expired.
See mode overview in chapter 6 on page 61 for short description.
The flowcharts below illustrate the full functionality of the mentioned gen-set
modes.
This section about applications is to be used for reference using the particular
gen-set mode as starting point. It is not suitable for reading from beginning to
end.
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