8. Maintenance
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.
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.
Figure 8.1
PID
U
V
W
V+
GND
PV+
PV-
Inverter
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 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.
WARNING
:
The PID function is automatic. When the DC bus voltage is lower than 260Vdc,
the PID module will start creating 650 Vdc between PV- and ground.
No need any control or settings
The 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.
7.5.15 I/V Curve
This function is used to scan the I/V characteristic curves of each PV strings.
Figure 7.49 I/V Curve
Set I/V Curve
I/V Curve Scan
7.5.15.1 Set I/V Curve
This setting can set the scanning voltage start point and the voltage interval.
Figure 7.50 Set I/V Curve
100V
010V
7.5.15.2 I/V Curve Scan
Press “ENT” to start the I/V curve scan.
Figure 7.51 I/V Curve Scan (1)
Scanning...01
After it is completed, the screen will display “Scan OK” and then enter the following section.
Figure 7.52 I/V Curve Scan (2)
Select String No.: 01
Figure 7.53 I/V Curve Scan (3)
9.56A
9.44A
Start_V: The start voltage of the I/V scan. (Adjustable from 100V-1400V)
Interval_V: The scanning voltage interval.(Adjustable from 001V-100V)
In total, 60 data points can be scanned.
The max scanning range is from 100-1450V.
7. Normal operation
.57.
.56.
