Line Priority Selection - ABB ATS022 Installation And Operating Instructions Manual

Installation and operating instructions, ATS022
4.6

Line Priority Selection

Description
ATS022 allows selection of the main line by means of the menu on the display. The following selections
are possible:
- main line: Line LN1
- main line: Line LN2 (selection possible only if generator is not in use)
- no line priority: ATS022 ensures power supply to the load from any of the two lines without
considering either of these as priority, therefore, for example, following switching on line LN2 due
to failure of line LN1, ATS022 remains on line LN2 even if LN1 is restored.
Time diagrams
Line 1 ok
CB1 CLOSED
Line 2 ok
CB2 CLOSED
Figure 4.16: Time Diagram no line priority – generator non in use
Line 1 ok
CB1 CLOSED
Gen start
Line 2 ok
CB2 CLOSED
Figure 4.17: Time diagram no line priority – generator in use
1SDH000760R0002
TS TCE
TS
4.
TBS TCN
TCE
16
Applications of device ATS022