SMA SB 1300TL Installation - Manual (Page 5)

SMA Solar Technology AG 2 Self-Test in Accordance with CEI 0-21 for Plants ≤ 6 kW
CEI0-21_B-IA-it-en-de-20 5
2 Self-Test in Accordance with CEI 0-21 for Plants
≤ 6 kW
2.1 Starting the Self-Test
The Italian standard requires that all inverters in plants ≤ 6 kW feeding into the electricity grid
perform a self-test 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 trip-limit values for each protective function on a linear basis
for frequency monitoring and voltage monitoring. As soon as the measured value exceeds the
permitted trip-limit value, the inverter disconnects from the electricity 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 the feed-in
operation, resets the original shutdown conditions and connects to the electricity grid.
Requirements:
☐ Country data set must be configured to CEI0-21 Int / CEI 0-21 intern.
or
☐ Country data set must be configured to trimmed / Special Setting based on CEI0-21 Int /
CEI 0-21 intern.
☐ A report for entering the test results in compliance with CEI 0-21 must be available.
☐ The inverter must be running and in the start-up phase (see the inverter installation manual).
1. As soon as the configured country data set appears in the display, tap the display once 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?
You missed the 10-second time limit so the self-test cannot start.
• Restart the self-test (see Section 2.3).
The self-test only applies to inverters that are configured with the country data set
CEI0-21 Int/CEI 0-21 intern.
The self-test is only valid for inverters licensed for Italy and configured with the country data set
CEI0-21 Int/CEI 0-21 intern.
If the inverter is configured to CEI0-21 Ext / CEI 0-21 extern, no self-test is required.