Where can PV inverters be installed? What should I pay attention to?

As the national policy strongly supports new energy, photovoltaic inverters are gradually being recognized by more and more people. However, as it is a new product, most people have only a vague understanding of photovoltaic inverters. So, where can photovoltaic inverters be installed? What should be paid attention to?

Photovoltaic inverter installation and precautions

1. What should I pay attention to when installing on a photovoltaic bracket?

Common ground distributed project solutions can be installed near a certain string of components, using fixed brackets or clamps to directly fix the equipment on the column. This solution requires attention to the strength of the bracket and the column and the height of the photovoltaic inverter from the ground to prevent it from being placed too low and flooded by rainwater during heavy rain.

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2. What should I pay attention to when installing on the roof?

This type of installation is mainly used in large industrial and commercial factories. As the roof is empty and there is no ceiling or parapet, there is no place to hang the photovoltaic inverter. In order to reduce the cost of cables, the photovoltaic inverter generally requires a self-made mounting bracket. The photovoltaic inverter is hung on the self-made bracket. The bracket needs to consider the load-bearing and fixing form of the inverter as well as the typhoon resistance in coastal areas.

As we all know, the life of electronic devices is halved for every 10℃ increase in ambient temperature. If the inverter is installed in this way and exposed to the sun for a long time, the internal temperature of the inverter will increase greatly, seriously affecting the life of the key components of the inverter. The inverter will operate at a reduced rating to protect the internal components, and even the over-high temperature may cause the inverter to have a temperature failure. It is recommended to add a sunshade to the photovoltaic inverter to avoid exposure to the sun.

When photovoltaic inverters are installed vertically on a flat roof, shadows will be generated. Therefore, when installing the equipment, the components should be installed outside the shadow range of the inverter as much as possible to avoid shadows on the components.

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3. Install on the wall

This is a common form of rooftop power station installation for household distributed projects. When this form is used, the photovoltaic inverter should be installed on the south wall as much as possible, and the photovoltaic inverter panel should face north to avoid sunlight. The specific installation requirements are as follows:

(1) The inverter should be installed at a suitable height from the ground to facilitate observation and reading of the LED display.

(2) When installed outdoors, a rain and sun awning should be installed above the photovoltaic inverter to avoid direct sunlight and rain. The inverter should not be directly exposed to the sun or other heat sources.

(3) Sufficient space must be left for installing and moving the inverter. For inverters with air inlet and outlet from top to bottom, a minimum of 50 cm of space must be left around them. For inverters with air inlet and outlet from left to right, air is drawn from the sides, so a minimum of 100 cm of space must be left on both sides.

(4) It must have sufficient load-bearing capacity, which should be at least 1.5 times the weight of the inverter.

(5) The heat dissipation air duct of the photovoltaic inverter is downward-intake and upward-outlet. The inverter should be installed vertically. Horizontal installation or upside-down installation is strictly prohibited.

(6) The photovoltaic inverter must be placed in a space with good air circulation. There are two types of inverters: forced air cooling and natural heat dissipation. The inverter itself is a heat source, and all heat must be dissipated in time. It cannot be placed in a closed space, otherwise the temperature will rise higher and higher.

The above are the common installation places and precautions for photovoltaic inverters. I hope it can help you get a better understanding of photovoltaic inverters. Photovoltaic inverters are relatively sophisticated instruments, so when installing them, it is best to have professionals do it, and avoid installing them yourself.