Grid-connected photovoltaic (PV) inverters boast high efficiency and reliable performance, making them suitable for installation in remote areas lacking maintenance and supervision. They maximize the utilization of solar energy, thereby improving system efficiency. Today, we'll discuss some installation precautions for PV grid-connected inverters.
1. Before installation, you should first check whether the inverter has been damaged during transportation.
2. When selecting an installation site, ensure that there is no interference from any other power electronic equipment in the vicinity.
3. Before making any electrical connections, be sure to cover the photovoltaic panels with an opaque material or disconnect the DC-side circuit breaker. Exposure to sunlight will cause the photovoltaic array to generate dangerous voltages.
4. All installation operations must be performed by qualified technicians only.
5. The cables used in the photovoltaic power generation system must be securely connected, well insulated, and of appropriate specifications.
6. All electrical installations must meet local and national electrical standards.
7. The inverter may only be connected to the grid after obtaining permission from the local power authority and after all electrical connections have been completed by professional technicians.
8. Before performing any maintenance work, the inverter should first be disconnected from the power grid, and then the DC side electrical connection should be disconnected.
9. Wait at least 5 minutes until the internal components have completely discharged before proceeding with maintenance.
10. Any fault that affects the safety performance of the inverter must be eliminated immediately before the inverter can be turned on again.
11. Avoid unnecessary contact with the circuit board.
12. Comply with electrostatic protection regulations and wear antistatic wrist straps.
13. Pay attention to and comply with the warning labels on the product.
14. Before operation, conduct a preliminary visual inspection of the equipment to check for any damage or other dangerous conditions.
15. Pay attention to the hot surfaces of the inverter. For example, the heat sinks of power semiconductors may remain at a high temperature for a period of time after the inverter is powered off.
