Specifications

V97-600002 Page 14 of 31
Inverter
Model
Maximum inverter
start voltage
Absolute maximum
input voltage
PVP1100 450VDC 500VDC
PVP2000 450VDC 500VDC
PVP2800 450VDC 500VDC
PVP3000 450VDC 500VDC
Table 2.4: PV Open Circuit Voltages
2.3.5.1 Open Circuit Calculations
The PV array open circuit voltage should be at or below 500 VDC under all
circumstances. Each DC input to the DC terminal block must be less than 500 VDC.
2.3.5.2 DC Connections
Each DC input connection must carry the same input voltage. The inverter allows up
to three connections for both the positive and negative poles.
To wire the DC inputs from the PV array to the inverter (see Figure 8):
1. Calculate the maximum open circuit voltage (Voc) for each series of modules
based on the VOC_TC, the ambient temperature, and accepted industry
practice.
Note: For all temperature conditions, the Voc for each series connection
must total less than the VDC indicated in Table 2-4 for the PVP1100,
PVP2000, PVP2800, and PVP3000 models.
Review the PV panel’s data sheet for operating temperature ranges.
2. Keep track of the array positive and negative leads and mark them clearly.
3. Route the PV array leads through the far right opening in the inverter.
4. Connect each series positive DC lead to the positive terminals of the power
distribution board.
WARNING:
Negative grounded array: On a standard negatively grounded PV array, only
break only the positive wire(s) in the DC disconnect. Do NOT break the negative
wire(s)..
Positive grounded array: On a positively grounded PV array, only break only the
negative wire(s) in the DC disconnect. Do NOT break the positive wire(s).
5. Connect the negative DC leads directly to the negative terminal on the power
distribution board.
6. Connect the ground wire(s) to the ground lug.