SMA SB 1300TL - Manual (Page 38)

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 disconnection 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 39).
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 39).
Example: Display messages for overvoltage test
- Name of the test: Autotest (59.S1) 240.00V
- Disconnection value: Valore di soglia con 230.00V
- Normative value: Va. taratura 253.00V
- Disconnection time: Tempo die intervento 0.02 s
- Current grid voltage: Tensione di rete Val.eff.: 229.80V
7 Commissioning SMA Solar Technology AG
Operating Manual SB13-21TL-BE-en-11 38