Installation and operating instructions, ATS022
1SDH000760R0002, L4106
12
3. Description
TS
TCE
TBS
TCN
TGOFF
TS = Switching delay, 0...30 s
TCE = Close emergency delay, 0...60 s
TBS = Back switching delay, 0...30 s
LINE 1 OK
CB1 CLOSED
GEN. START
GEN. START
LINE 2 OK
CB 2 CLOSED
KA00485
TCN = Close normal delay, 0...60 s
TGOFF = Generator stop delay, 0 s, 1 s, ...59 s, 1 min, 2 min, ...5 min
Figure 3.1 Automatic Switching Sequences
3.3 Application scenarios
The ATS022 can be used in different installation scenarios:
Two transformer incoming lines
One transformer incoming line and an emergency generator on the emergency line
3.2.9 Voltage sensors input
Voltage sensors are the same on the normal and emergency lines.
The net sensor is able to detect the following anomalies:
Undervoltage and overvoltage
Phase loss
Voltage imbalance
Minimum and maximum frequency
The net sensor monitors the normal supply line in order to start the switching procedure from the normal
to the emergency line in the case of network anomalies. Equally, the net sensor enables the reverse
switching procedure when the normal supply line returns.
3.2.10 Measurements
Voltage: 1 %
Frequency: 1 %
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