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4 Installation
4.4 Energising the system
CAUTION
Check that the voltage of
the completed PV string
does not exceed 400V and
note the polarity of the
MC4 connectors is correct.
Check the AC isolator(s)
are in the 'off' position and
that there is no power
being supplied to the
inverter.
Connect the AC plug to the inverter and
screw the securing ring hand tight. Isolate
the DC isolator(s). Connect the MC Type4
connecters to the inverter. Turn on the DC
isolator(s). Note that the LCD display on
the inverter reads ' Grid Volt Error – Grid
Frequency Error'.
Turn on the AC isolator(s). The inverter now
takes approximately 1 minute to carry out
self-diagnostic checks on the DC and AC
conditions. Check the operation status by
scrolling through the LCD displays one by
one. Make sure the system is now in
normal operation mode.
For references to the LCD display see
section 4.
10
continued...
4.5 De-energising the system
Irrespective what condition the inverter
is in, carry out the following instructions
In the order they appear to safely
isolate the inverter.
Turn off and lock off the DC isolator(s).
Turn off and lock off the AC isolator(s).
If maintenance on the DC side is
required, disconnect the DC MC Type4
plugs from the inverter. If maintenance
on the AC side of the inverter is
required, disconnect the DC MC Type4
plugs and then disconnect the AC plug
from the inverter.
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