Turn Pv Inverteron/Off; Start-Up Procedures; Pv Array Dc Voltage Checking; Ac Utility Voltage Checking - Delta RPI H3A User Manual

7 Turn PV inverteron/off

WARNING：BURN HAZARD
The internal temperature may exceed over 70°C while operating. To avoid
injury,do not touch the surface of the inverter whilst the unit is in operation.
After installation, please ensure the AC, the DC and communication
connection are correct. When enough power is generated from the PV array,
the device will operate automatically and will initial 'self-test'. This self-test
takes approximately 2 minutes and will occur at first start-up of the day.
The display on the inverter includes 16×2 LCD display and LED indicator lights
to indicate inverter status. There are green and red colour LED indicator lights
to represent different inverter statuses.

7.1 Start-up Procedures

7.1.1 PV Array DC Voltage Checking

Firstly, uncover the PV arrays and expose them to full sunlight. Please note,
the sunlight must be intense enough to produce the required output voltage for
the inverter to start up.
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, measure 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

Switch the DC and AC disconnection switches (breakers) to "ON".
Check the inverter LCD display. The start-up screen should appear in several
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