Support Service-Hopewind

For Hopewind single‑phase inverters, the DC side can be sized at 1.1 to 1.2 times the rated power, while three‑phase inverters support up to 1.3 times or higher. To avoid unnecessary DC‑side clipping during certain periods, a typical design recommendation is 1.2 times the rated power. Additionally, the oversizing ratio should be adjusted according to the specific module specifications, such as 182 mm or 210 mm high‑power modules.

Why should the shell of the series PV inverter be grounded (PE), and what are the requirements of the cable?

(1)Without grounding, the enclosure and any connected metal parts (e.g., brackets) may become live in the event of an insulation fault, posing an electric shock hazard. Grounding ensures both equipment safety and personal protection.

(2)For the protective earth (PE) connection, use a dedicated copper grounding cable with a cross‑section of no less than 16mm².

What are the requirements for the installation environment and reserved space of the series PV inverter?

(1) It shall be installed in a well-ventilated place;

(2)Avoid direct sunlight, rain, and snow exposure.

(3)It is recommended to install under a shelter; if not possible, provide an awning.

(4)Reserve at least 0.5 m clearance on both left and right sides, and 0.3m above and below the inverter.

(5)Leave at least 1 m clearance in front of the inverter.

(6)These clearances promote effective heat dissipation and facilitate convenient maintenance.

What is the reason forthe low power generation of the inverter?

There are several possible reasons for this. You can find troubleshooting tips in the links below:

(1) Check whether the PV panel and inverter are properly matched.
(2) Check whether the PV panel and inverter are operating normally, whether there is any shading on the panels, and whether all components are securely wired.

How is the shipping arranged if I order sample/trial units from Hopewind?

We can ship to virtually any country worldwide, even for a single unit. You may choose between expedited courier service (delivery within 2 to 7 days) or a more economical sea freight option.