Test Modes - ABB ATS022 Installation And Operating Instructions Manual

5. Using the automatic transfer switch

5.7 Test Modes

ATS022 makes it possible to select two different test modes:
• testing the entire switching procedure (complete Test)
• generator start/stop test (gen set test)
WARNING: when the test procedure ends, the user must make sure the device is not left accidentally in
TEST mode
Complete Test
With ATS022 in manual mode, press TEST: all the LEDs, except Tx/Rx, flash twice simultaneously and
then the Auto LED Auto flashes every 0.5 sec.; the graphic display shows the icon T.
The test procedure varies according to the application selected:
2 CBs
1. Press TEST; start generator
(not performed if generator is NOT in use)
2. Press TEST; CB1 Opening
4. Press TEST; CB2 Closure
5. Press TEST; CB2 Opening
6. Press TEST; CB1 Closure
8. Press TEST; stop generator
(not performed if generator is NOT in use)
3CBs NPL Bus Tie
1. Press TEST; start generator
(not performed if generator is NOT in use)
2. Press TEST; CB1 Opening
3. Press TEST; CB3 Opening
4. Press TEST; CB2 Closure
5. Press TEST; CB2 Opening
6. Press TEST; CB3 Closure
7. Press TEST; CB1 Closure
8. Press TEST; stop generator
(not performed if generator is NOT in use)
Table 5.11: Description of complete TEST mode ATS022
At the end of the procedure, press TEST again to resume the sequence.
Alarms, if any, on the protection devices control are activated in the same manner as the automatic and
manual operating modes.
The user can stop the TEST sequence by pressing the RESET.
Gen Set Test
This test mode makes it possible to test only the generator start and stop with the plant running without
opreating the circuit breakers on the line in any manner whatsoever, only if the ATS022 is set with the
generator in use, otherwise the Gen Set Test is not performed.
With ATS022 in manual mode, keep the TEST key pressed for at least 3 seconds, on releasing the TEST
key, all the LEDs, except Tx/Rx, flash simultaneously four times and then the Auto LED flashes at 0.5Hz;
the graphic display shows the GT icon.
The test procedure is as follows:
1. Press TEST; start generator
2. Press TEST; stop generator
Table 5.12: Description of test method GEN SET ATS022
1SDH000760R0002
Installation and operating instructions, ATS022
3CBs NPL
1. Press TEST; start generator
(not performed if generator is NOT in use)
2. Press TEST; CB1 Opening
3. Press TEST; CB3 Opening
4. Press TEST; CB2 Closure
5. Press TEST; CB2 Opening
6. Press TEST; CB1 Closure
7. Press TEST; CB3 Closure
(not performed if ATS022 has activated the
DISCONNECTION ONLY function)
8. Press TEST; stop generator
(not performed if generator is NOT in use)
3CBs Bus Tie
1. Press TEST; CB1 Opening
2. Press TEST; CB3 Closure
3. Press TEST; CB3 Opening
4. Press TEST; CB1 Closure
5. Press TEST; CB2 Opening
6. Press TEST; CB3 Closure
7. Press TEST; CB3 Opening
8. Press TEST; CB2 Closure
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