Installation and operating instructions, ATS022
1SDH000760R0002, L4106
20
4. Operating
4.3 TEST sequence
When pushing the TEST key, the automatic transfer switch (ATS022) enters the test sequence in which
it is possible to simulate switching and back-switching sequences step-by-step, by pressing the TEST
key. ATS022 must be in MANUAL mode before entering the test sequence. Exiting from test sequence is
done by RESET key.
Steps in the TEST sequence are:
1. Press TEST; generator starts (skipped if the generator is not in use)
2. Press TEST; Open CB1
3. Press TEST; Close CB2
4. Press TEST; Open CB2
5. Press TEST; Close CB1
6. Press TEST; stop generator (skipped if the generator is not in use)
Pressing TEST after that; sequence restarts. Alarms are activated in the same way as in automatic
sequences, if circuit breaker control fails. The user can stop the TEST sequence by pressing the RESET
key. After stopping the TEST sequence the device returns to the default page and the settings are
exactly the same as they were before starting the TEST sequence.
Figure 4.5 TEST sequence to simulate the functions
KA00354
TEST
CB1
CB2
Before starting the TEST sequence, please, make sure that CB1 is in closed position
and the both lines have the voltage on.
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