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7. Normal Operation
7.5.17 I/V Curve
This function is used to scan the I/V characteristic curves of each PV strings.
Set I/V Curve
I/V Curve Scan
Figure 7.27 I/V Curve
7.5.17.1 Set I/V Curve
This setting can set the scanning voltage start point and the voltage interval.
Figure 7.28 Set I/V Curve
Start_V: The start voltage of the I/V scan. (Adjustable from 850V-1000V)
Interval_V: The scanning voltage interval.(Adjustable from 001V-100V)
In total, 60 data points can be scanned.
The max scanning range is from 850-1450V.
7.5.17.2 I/V Curve Scan
Press "ENT" to start the I/V curve scan.
Figure 7.29 I/V Curve Scan (1)
After it is completed, the screen will display "Scan OK" and then enter the following section.
Select String No.: 01
Figure 7.30 I/V Curve Scan (2)
Figure 7.31 I/V Curve Scan (3)
.46.
850V
010V
Scanning...01
9.56A
9.44A
Canadian Solar Three Phase Inverter does not require any regular maintenance. However,
cleaning the dust on heat-sink will help the inverter to dissipate the heat and increase its life
time. The dust can be removed with a soft brush.
CAUTION:
Do not touch the inverter's surface when it is operating. Some parts of the
inverter may be hot and cause burns. Turn off the inverter (refer to Section
6.2) and wait for a cool-down period before before any maintenance or
cleaning operation.
The LCD and the LED status indicator lights can be cleaned with a damp cloth if they are too
dirty to be read.
NOTE:
Never use any solvents, abrasives or corrosive materials to clean the inverter.
8.1 Anti-PID Function
Canadian Solar Three phase Inverters integrates optional Anti-PID module and it can recover
the PID effect during night thus protect the PV system from degradation.
PV+
PV-
The integrated Anti-PID module repairs the PID effect of the PV model at night. When
operating, the inverter LCD screen displays " PID-repairing " information, and the red light is
on. The Anti-PID function is always ON when AC is applied.
If maintenance is required and turn off the AC switch can disable the Anti-PID function.
WARNING :
The PID function starts automatic. When the DC bus voltage is lower than
50Vdc, the PID module will start creating 450 Vdc between PV- and ground.
No need any control or settings
8. Maintenance
Inverter
L1
L2
L3
V+
PID
GND
Figure 8.1
.47.
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