-20-
negative ground to avoid PID effect.
i) If the inverter purchased by customers does not have the function of negative ground, Jinko
can provide PID restorer solutions and recommended PID restorer manufacturers for
customers'reference.
j) If modules are connected in series, the total voltage is equal to the sum of individual
voltages. The recommended as below,
System voltage
≥N*Voc[1+TCVoc* (Tmin-25)]
Where
N module numbers in series
Voc Open circuit voltage (refer to product label or data sheet)
TCVoc Temperature coefficient of open circuit voltage (refer to product label or data sheet)
Tmin Minimum ambient temperature.
k)
Connectors and bybass diodes from different manufacturers should not be mated together. If need
to replace, please contact Jinko Solar.
l) All module frames and mounting racks must be properly grounded in accordance with local
and national electrical codes. Attach the equipment grounding conductor to the module
frame using the hole and hardware provided. Note that a stainless steel star washer is used
between the ground wire and module frame (see Figure 6 below). This washer is used to
avoid corrosion due to dissimilar metals. Tighten the screw securely.
You can choose other
grounding solutions as recommended by the component installation provider.
Figure 6
：
Ground installation of PV modules
4. Maintenance and care
It is required to perform regular inspection and maintenance of the modules, especially during
the warranty period. To ensure optimum module performance, Jinko recommends the following
maintenance measures: