PV Powered 3000 Installation Manual download pdf (Page 40)

Commissioning SMA Solar Technology AG

40 SB25_30-IA-IEN115050 Installation Manual

6.3 Self-test in Accordance with DK 5940, Ed. 2.2

(Applies to Italy Only)

6.3.1 Starting the Self-test by Tapping

You can start testing the disconnection times by tapping on the enclosure lid. A prerequisite here is

that the rotary switch for language settings on the inverter has been set to Italy (IT/DK5940) or

"trimmed". Proceed as follows for checking the disconnection times:

1. Connect the PV array to the inverter. The inverter can only initialise if the PV array produces

enough power. It is therefore not possible to test the disconnection times at night.

2. Connect the inverter on the AC side. For this, you have to establish the AC connection

(AC plug or direct connection) and/or switch on the miniature circuit-breaker of the mains cable

(fuse or miniature circuit-breaker).

3. The inverter is now in the initialisation phase, i.e. all three LEDs are lit at the same time.

Start the self-test immediately after all three LEDs have gone out by tapping on the display of

the inverter.

4. The question of whether you would like to start the

test sequence appears in the display. Tap on the

display again within 30 seconds to confirm the

question.

Once you have started the test sequence, the inverter checks the disconnection times for overvoltage,

undervoltage, maximum frequency and minimum frequency one after the other. During the tests, the

inverter shows the values in the display which are described in Section 6.3.2 "Completion of the Self-

test" (page40).

6.3.2 Completion of the Self-test

Note down the values which are displayed during the self-test. These values must be entered into a

test report. The test results of the individual tests are displayed three times, one after the other. The

respec-tive display message is displayed for 10 seconds.

The self-test changes the upper and lower disconnection thresholds for each protective function on a

linear basis with a modification of 0.05 Hz/s and 0.05 Vn/s for the frequency and voltage monitor-

ing. As soon as the actual measured value is outside the permissible range (modified disconnection

threshold), the inverter disconnects itself from the mains. In this way, the inverter determines the reac-

tion time and checks itself.

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 75 76

No comments

PV Powered 3000 Installation Manual Page 40