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This operating mode useful testing gen set autom atic start-up and thus checking
emergency line supply state.
This ensures maximum switching system reliability since the system can be
controlled manual mode under any emergency condition. the case net
anomalies, starts the itching procedure change over fro norm emergency
mode and vice versa hen norm pow returns.2 Basic switchinglogic
The llo diagram sim plified illustration the SACE ATS010 basic switching
lo gic hen enabled.
ABB SACE SACE ATS010 RH0202002 L2467 7/4.1 Operating mode selector
By using the front selector possible choose one the six operating modes
described below.3.
Strategy trategy 2
(norm condition: lan pow ered orm line) (normal condition: plant powered normal line)
n t
Delay Delay T2
N lin rts up
D its lin lta e
D 5
E line s
n t
D elay T2
G set starts up
D evice aits ergency line voltage
D elay T5
If has not already elapsed, delay until 1
N orm line breaker opens
Em ergency line breaker closes
(plant pow ered ergency line)
(plant powered emergency line)
n s
D 4
E lin s
N lin s
D 3
G n
n returns
D elay T4
E ergency line breaker opens
N orm line breaker closes
D elay T3
G set shuts down
(norm condition)
(normal condition)
3. The inputs, outputs, selectors and setting trim ers the
device are described the llo paragraphs and each description given
o how operates ith the itself.3.
The selector electrom echanical device and all operating modes, except
‘Automatic’,work even the case microprocessor failure.3 Regulation
3. The
autom atic itch ing always on.
A IC
W ith the selector this position, the transfer itch on.
TEST
In this sitio the output contact starts the gen set, even the line powered
