Delta RPI-H3 Service Manual Page 31

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7. Turn on/off PV inverter
WARNING
BURN HAZARD
The enclosure temperature may exceed over 70 while
operating. Danger may occur owing to hot surface. Please do
not touch!
After installation, please confirm the AC, DC, and Communication connection
are correct. When solar irradiation is sufficient, the device will operate
automatically after no mistakes on self-auto test (about 2 minutes at 1
st
startup
of a day). The display includes 16×2 LCD display and LED indicator for
inverter status. There are green and red colors for LED indicator to represent
different inverter working status.
7.1 Start-up Procedures
7.1.1 PV Array DC Voltage Checking
1. Uncover the PV arrays and expose them to full sunlight. The sunlight
must be intense enough to produce the required output voltage.
2. Measure the PV array open circuit DC voltage across the DC positive (+)
and negative (-) terminals.
7.1.2 AC Utility Voltage Checking
Using an AC voltmeter measures the AC open circuit utility voltage
between L1 (L) and L2 (N). Ensure the voltage is at approximately the
nominal value. The inverter operates with a line-to-line voltage range
around the nominal value.
See “11. Technical data”, output section for the utility voltage operating range
for your inverter model.
7.1.3 Starting up the Inverter
1. Switch the DC and AC disconnection switches (breakers) to “ON”.
2. Check the inverter LCD. The startup screen should appear in several
seconds, (for the first time start up, select proper country and language.
See “7.3.2 Country Selection & 7.3.3 Language Selection”).
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