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How to Avoid Being Pitted by Installing PV Power System?

September 19, 2020

In this era of photovoltaic popularity, People's enthusiasm for the installation of photovoltaic power generation has always been high.

However, there are many components of the PV power generation system, and any point in it that goes wrong may affect the overall efficiency, thus leading to a reduction in revenue.

So when you install a photovoltaic power generation system, how to avoid being pitted in the end?

Here are five common "pitfalls".

Photovoltaic Mounting

Photovoltaic brackets are special brackets designed for placing, mounting and fixing photovoltaic panels in photovoltaic power plant systems. Insufficiently designed brackets are prone to overturning and scattered module damage when they encounter strong winds.

The thickness of a good bracket steel structure conforms to standard requirements, hot-dip galvanized material or high-quality aluminium alloy material, the basic thickness is equal to or greater than 2.2mm, strong corrosion and wind resistance, and can also guarantee 25 years of service life.


The cheaper mounting brackets may not even have a thickness of 2mm or less, it is with poor corrosion and wind resistance, and the PV system is exposed to the wind and sun all year round, it will cause the brackets to corrode and cause the PV modules to fall;

Even if the modules don't fall, the corroded stands will cause changes in the tilt angle of the modules, reducing the system's power generation, resulting in revenue damage.

Photovoltaic cable

Photovoltaic cables need to have weather resistance, high-temperature resistance, friction and other characteristics and has a long service life.


Suppose you choose ordinary cables to replace them. In that case, the protective layer of these cables will corrode after two or three years in the PV system, leading to the exposure of copper wires inside the cables, which will easily cause electricity leakage and even fire.

Photovoltaic modules

Solar modules are the core part of the solar power generation system, and the quality of the PV modules directly affects the length of service life and the level of revenue.


Poor backsheet material has poor weather resistance, which directly affects the service life of the module.

If the solar panel frame material is not strong enough, it may directly cause the photovoltaic panel array to fall off or tear during strong winds. Even some inexpensive solar panel wafers are printed, or paper wafers, can not generate electricity at all.

How to identify the solar power system components good or bad?

First of all, it is necessary to see the supplier of the component, whether it is the top brand of the solar panel industry, generally, the big brand warranty and after-sales service is guaranteed.

Secondly, it depends on whether there is any welding leakage when welding the solar cells, and the quality of the backpressure, whether there is any unevenness, bubbles, folds, etc. and the quality of the frame. Whether the structure is strictly into a rectangle, the error can not be too large.

Photovoltaic inverter

An inverter is an intermediary that converts DC energy into AC energy. The quality of the inverter determines the efficiency of electrical energy conversion.


The inverter is one of the more problematic devices in the PV system; it is important to buy quality products from regular manufacturers to ensure stable long-term power generation. Daily maintenance should also pay attention to ventilation and heat dissipation, to avoid damp and too closed environment.

Good quality, high efficiency of the inverter can make PV system capacity higher, like this top brand inverter conversion efficiency are more than 98%;. In contrast, the quality is not good, low-efficiency inverter will detract from the system capacity, most of this inverter conversion efficiency is only 90% or even lower.

Photovoltaic distribution box

A good distribution box can cost up to $100 a piece more than a bad quality one. But what is the difference between these two distibution box?

A good distribution box ensures that the product meets the grid requirements.

while a poor quality distribution box may not have a voltage closure and under-voltage release function or poor quality malfunction, which can cause back feeding - that is, a grid blackout in case the inverter is also of poor quality and the PV system is still working with power and Send the power to the grid, in case there are staff on the grid at this time in the maintenance, it may cause electrocution accidents, serious casualties.

Secondly, the poor quality of electrical components, will lead to fire, damage and other phenomena, safety risks.

Grid-connected metering distribution box must have the utility and photovoltaic power generation disconnected switch (knife switch), (self-complex) over-under-voltage protector, surge protector (lightning arrester), leakage protection switch (load switch), grounding device.

Judge the quality of the photovoltaic system

First, check the appearance of the system, such as components, arrays, convergence box, etc., if found problems, component damage, blocking, dust, etc., you can take appropriate measures to solve the problem in time;

Thirdly, request the safety of the system to carry out field tests, such as grounding continuity, insulation, whether it has lightning protection settings, etc., if there is a problem, should let the installation company solve it in time.

In fact, the entire above problems are solar power system quality problem. If you can control these points, you can in essence avoid the pit

So, do not choose the cheapest solar components!

So, do not choose the cheapest solar components!

So, do not choose the cheapest solar components!

All the PV systems we install are made of top brand components for quality assurance and safety. Welcome to contact us for more information.

Whatsapp: 0086-189-30406049

Email: [email protected]


I am the Marketing Director of SUNVIS, with 12 years of experience in the Solar Outdoor Lighting, Solar Power System and Solar Water Pumps industry. If you have any questions, you can contact me at any time.

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