Kostal PIKO 1.5 MP, Руководство по эксплуатации

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6 Self test
The self test is mandatory for operation of inverters in Italy.
The prerequisites for performing the self test are as follows:
n
The country
Italy
was selected during initial commissioning.
n
The level of solar irradiation is high enough to ensure that the inverter
can feed the grid.
During the self test, the inverter checks its switch-off behaviour with regard
to too high / too low grid voltage and frequency (7 test phases, duration of
approx. 40 minutes). The following applies:
n
In each phase of the self test, the inverter changes its switch-off
threshold, step-by-step upwards/downwards from the set lower/upper
limit values.
n
When the switch-off threshold reaches the actual grid voltage/
frequency then the inverter stores this information.
n
The data is shown on the display as follows:
– The current values of the first test phase are displayed first; see the
following illustration.
– The values of the subsequent test phases are added below (initially
hidden).
– If the self test succeeded then the message
Self test passed
is
added below. The message must be displayed and confirmed.
n
If the self test conditions are not satisfied, one of the following mes‐
sages will be displayed: Ä
Tab. 3 „Messages of errors that prevent the
self test from running“ on page 54
.
n
If a measurement lies outside the required tolerance during the self test
then the self test is cancelled and the inverter displays the message
Self test failed
. The inverter remains disconnected from the grid
(relay open, no feeding) until the self test is passed successfully.
To see the results of the self test saved in the inverter, press
Information
⇒
Self test.
Function
Self test
11/2017 | DOC01664604 | KOSTAL operating instructions PIKO inverter 1.5 - 4.2 MP 52