Applications; Automatic Mains Failure (No Back Sync.); Automatic Mains Failure (With Back Sync.) - Deif Multi-line 2 Designers Reference Handbook

AGC
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.
The unit can be used for the applications listed in the table below.
Application

Automatic Mains Failure (no back sync.)

Automatic Mains Failure (with back sync.)

Island operation
Fixed power/base load
Peak shaving
Load take over
Mains power export (fixed power to mains)
Multiple gen-sets, load sharing
Multiple gen-sets, power management
Gen-set mode
Automatic Mains Failure (no back sync.)
Automatic Mains Failure (with back sync.)
Island operation
Fixed power/base load
Peak shaving
Load take over
Mains power export
Multiple gen-sets, load sharing
Multiple gen-sets, power management
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.
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.
DEIF A/S

Applications

Comment
Standard
Standard
Standard
Standard
Standard
Standard
Standard
Requires option G3
Requires option G5
Running mode
Auto Semi
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Designer's Reference Handbook
Test Man Block
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