How to improve the service life of photovoltaic inverters?

October 25, 2022

Photovoltaic inverters are electronic products, limited by internal electronic components, they must have a certain life span. The life of a photovoltaic inverter is determined by the quality of the product, the installation and use environment, and subsequent operation and maintenance. So how to improve the service life of the inverter through correct installation and use and later operation and maintenance?

The inverter must be installed in a ventilated space, and keep it well ventilated with the outside world. If it must be installed in a closed space, an air duct and exhaust fan, or an air-conditioning device must be installed. It is strictly forbidden to install the inverter in a closed box.

The installation location of the inverter should be avoided as far as possible from direct sunlight. If the inverter is installed outdoors, it is best to choose to install it under the eaves on the sun-backed surface or under the solar modules, with eaves or components blocking the inverter. If it can only be installed in an open place, it is recommended to install a sunshade canopy above the inverter.

Whether it is a single installation or multiple installations of the inverter, the installation must be carried out in accordance with the installation space size given by the inverter manufacturer to ensure that the inverter has sufficient ventilation and heat dissipation space and operation space for later operation and maintenance.

The inverter should be installed as far away as possible from high-temperature areas such as boilers, oil-fired hot air blowers, heating pipes, and air outlets of external units of air conditioners.

The external environment of inverter operation

The external environment in which the inverter operates is also an important factor affecting the life of the inverter. At present, the protection level of string inverters on the market can reach IP65 or even IP66. It can prevent dust, rain, and salt spray corrosion, and can adapt to harsh external environments, but in places with serious pollution or dust In more places, because dirt falls on the radiator, it will affect the function of the radiator. Dust, leaves, mud and other fine objects may also enter the air duct of the inverter, which will also affect the heat dissipation and affect the service life. In this case, it is particularly important to clean up the dirt on the inverter or the cooling fan regularly so that the inverter has good heat dissipation conditions.

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