SMA SB 3600SE-10 - Manual (Page 42)

The self-test is only required for inverters to be commissioned in Italy. The Italian standard requires
that all inverters feeding into the utility grid are equipped with a self-test function in accordance with
CEI 0-21. During the self-test, the inverter will consecutively check the reaction times for
overvoltage, undervoltage, maximum frequency and minimum frequency.
The self-test changes the upper and lower disconnection values for each protective function on a
linear basis for frequency monitoring and voltage monitoring. As soon as the measured value
exceeds the permitted disconnection threshold, the inverter disconnects from the utility grid. In this
way, the inverter determines the reaction time and checks itself.
After the self-test has been completed, the inverter automatically switches back to feed-in operation,
resets the original shutdown conditions and connects to the utility grid. The test takes approximately
three minutes.
Requirements:
☐ Configured country data set: CEI 0-21 Int or CEI 0-21 internal or amended country data set
trimmed or Special setting based on one of the country data sets mentioned above.
☐ A report for entering the test results according to CEI 0-21 must be available.
☐ The inverter must be in operation and in the start-up phase.
Procedure:
1. As soon as the configured country data set appears in the display, tap once on the display
within ten seconds.
☑ A message informing you that the self-test has started is shown in the display: Avvio
Autotest.
✖ The message Avvio Autotest is not shown in the display?
The ten seconds have elapsed so the self-test cannot start..
• Restart the self-test (see Section 7.4.2, page 43).
2. Tap on the display within 20 seconds and enter the subsequent test results into the test report.
☑ The self-test starts.
☑ The inverter displays the results of the individual tests for overvoltage, undervoltage,
maximum frequency and minimum frequency. The results are displayed three times in
succession for ten seconds each.
Useful hint: If you want to have the next result displayed without waiting ten seconds, tap
twice on the enclosure lid.
✖ The information Autotest interroto is shown in the display?
The self-test was cancelled due to an unexpected disconnection condition or the DC
voltage is too low to continue grid feed-in.
• Restart the self-test (see Section 7.4.2, page 43).
7 Commissioning SMA Solar Technology AG
Operating Manual SB36-50SE-BE-en-11 42