News Center

Contact Us

Qinhuangdao Saikangguangdian Electrical Co., LTD.
Add: No.13 Building, yongdinghe Road, EATD Zone, Qinhuangdao, Hebei, China.
P.C.: 066004
Fax: +86-335-8040870
Mobile:13343351633
Http://www.pv-connector.com
E-mail：chinasaikang@163.com

Location：Index 》 News Center

PV inverter maintenance precautions

Photovoltaic power generation is a technique that converts light energy directly into electrical energy using the photovoltaic effect of the semiconductor interface. The key component of this technology is solar cells. Solar cells through the series after the package protection can form a large area of the solar cell components, coupled with the inverter, power controller and other components to form a photovoltaic power generation device. PV power generation is less limited by geographical constraints, because the sun shines on the earth; PV system also has a safe, reliable, no noise, low pollution, no need to consume fuel and erection of transmission lines can be local power supply and construction of short-term advantages.


PV inverter as an electronic product, composed of many components. Inverter, also known as power regulator, according to the inverter in the use of photovoltaic power generation system can be divided into independent power supply and grid with two. According to the waveform modulation method can be divided into square wave inverter, stepped wave inverter, sine wave inverter and modular three-phase inverter. For the inverter for the grid system, depending on whether the transformer can be divided into transformer-type inverter and transformerless inverter. When the grid and power generation and even when connected to the grid, where we should pay attention, because of its particularity, in the installation, maintenance, when absolutely careless, otherwise it may be such a hidden danger. So how do we pay attention to it? Here we start from the maintenance side.


Photovoltaic power generation system installed and network, it is inevitable that there is no problem, after the problem will be checked and repaired,


Maintenance is to pay attention to what:


1, before carrying out any maintenance work, should first disconnect the inverter and the electrical connection, and then disconnect the DC side electrical connection.


2, wait at least 5 minutes until the internal components can be discharged before the maintenance work.


3, any failure to affect the safety performance of the inverter must be immediately removed before the inverter can be opened again.


4, to avoid unnecessary circuit board contact


5, to comply with static protection specifications, wearing anti-static bracelet.


6. Observe and follow the warning signs on the product.


7, before the initial operation of visual inspection equipment for damage or other dangerous state.


8, pay attention to the inverter hot surface. Such as power semiconductor heat sink, etc., in the inverter power after a period of time, still maintain a high temperature.


Finally, after the machine has been repaired, make sure that any failure that affects the safety performance of the inverter has been resolved before turning on the inverter again.


Understand the maintenance of photovoltaic grid-connected inverter specifications, maintenance and repair process in the daily to pay attention to, so as to avoid the occurrence of hidden dangers.