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connect to pV panel (dc input)
1. Make sure the maximum open circuit
voltage (Voc) of each PV string is less than
450VDC UnDER Any COnDITIOn. We
recommend Voc less than 360VDC with
ambient temperature of 25C.
2. Use MC 3 (Multi-contact) connectors for
PV array terminals.
3. Connect the positive and negative terminals
from the PV panel to positive (+) terminals and negative (-) terminals
on the PV-Inverter. Each DC terminal on Protect PV endorses 20ADC
Before connecting PV panels to DC terminals, please make sure the
polarity is correct. Incorrect polarity connection could permanently
damage the unit.
Check short-circuit current of the PV string. The total short-circuit
current of the PV string should be less than the inverter’s maximum DC
current.
High voltages exist when the PV panel is exposed to the sun. To reduce
risk of electric shock, avoid touching live components and treat connec-
tion terminals carefully.
checkinG
1. When the PV panels are connected and their output voltage is
greater than 100 VDC but the AC grid is not yet connected, the
message on the LCD display produce the following messages in
order: “MODEL= XkW” -> “Waiting” -> “No Utility”. The display
repeats “no Utility” and the RED “fault LED” turns on.
2. Close the AC breaker or fuse between PV-Inverter and grid.
The normal operating sequence begins.
3. Under normal operating conditions the LCD displays “Watt=xxxx
x
W”. That is the power fed to the grid. The green LED turns lights-up.
4. This completes the check.