Industry news
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Application of surge protector in solar energy system
Surge is a term used to describe an increase in electrical current or voltage in an electrical system. In the context of solar systems, surge refers to a sudden increase in the amount of electricity produced by solar panels. One way that surge can occur in a solar system is through the use of solar panels that are connected in parallel. In a parallel connection, the panels are connected so that the positive terminal of one panel is connected to the positive terminal of another panel, and the negative terminals are similarly connected. This configuration allows for the production of more ele...Read more -
What is the working principle of the lightning protection surge module (surge protector)?
What is a lightning protection surge module (surge protector)? It is estimated that most electrical technicians are familiar with it. A surge protector (SPD) actually suppresses surge voltages caused by lightning, electrical system operations, or static electricity. Lightning strike is a natural phenomenon that may cause serious harm. It will not only cause great harm to people, livestock, trees, etc., but also seriously affect buildings and electrical and electronic equipment. Therefore, it is very important to install lightning protection devices. As a lightning ...Read more -
The application of rcmu in the detection of residual power (leakage current) of DC power supply equipment
Introduction: Power engineering DC power supply equipment, as the security power supply and control signal power supply of the main electrical equipment, is a very large multi-branch power supply network. Under normal circumstances, one-point grounding does not affect the operation of the DC system, but if the grounding fault point cannot be quickly found and repaired, another grounding fault occurs, which may cause major faults. There are two main methods for traditional detection of DC system insulation: bridge balance method and low-frequency detection method. B...Read more -
Basic principle of leakage current detection and selection of leakage current protection method in ev charger
First, the classification of leakage current Generally, there are four types of leakage currents: semiconductor component leakage current, power supply leakage current, capacitor leakage current and filter leakage current. 1. Leakage current of semiconductor components The very small current that flows through the PN junction when it is turned off. D-S is forward biased, G-S is reverse biased, and after the conductive channel is opened, current will flow from D to S. But in fact, due to the existence of free electrons, free electrons are attached to SIO2 and N+, re...Read more -
MOREDAY rapid shutdown – effectively ensure the safety of photovoltaic systems
Rooftop distributed photovoltaics have been widely used in Europe, the United States, Australia, China and Japan. As the application of photovoltaic power plants in the area closest to human activities, more and more emergency personnel and firefighters are aware of the potential safety hazards of photovoltaic systems. How to ensure personal safety, how to prevent the fire risk of photovoltaic facilities, and how to ensure that non-professionals identify and cut off risks at the first time have become issues of common concern in various countries. Potential safety hazards of photovoltaic s...Read more -
Science: How to choose electric car charging post, which is better to choose DC charging post or AC charging post?
What are the considerations for choosing an EV charging post, and whether it is better to choose a DC charging post or an AC charging post. From the consideration of using demand, the overall cost of DC charging pile is high, and the cost of AC charging pile is low. If it is a personal installation of charging piles, it is recommended to use AC charging piles. The charging power of AC charging piles can reach a maximum of 7KW, and it takes 6-10 hours to be fully charged on average, and the electric car will be parked directly after returning home from work and charged without delay the next...Read more -
What is a photovoltaic combiner box? Please see our explanation
What is a photovoltaic combiner box? The photovoltaic combiner box is a wiring device that ensures the orderly connection of photovoltaic modules and the combining function in the photovoltaic power generation system. It means that the user can connect a certain number of photovoltaic cells with the same specifications in series to form a photovoltaic series, and then connect several photovoltaic cells in series. The photovoltaic series and parallel connection are connected to the photovoltaic combiner box. After the photovoltaic combiner box is combined, the controller, DC power distributi...Read more -
World Meteorological Organization calls for increased global supply of clean energy
The World Meteorological Organization released a report on the 11th that the global electricity supply from clean energy must be doubled in the next 8 years to effectively limit global warming; otherwise, due to factors such as climate change, increasing extreme weather and water shortages, global energy security may be got damage. According to the WMO report “The State of Climate Services 2022: Energy”, as extreme weather events around the world become more frequent and severe, climate change is posing risks to global energy security, directly affecting fuel supply, energy prod...Read more -
The difference between surge protector, leakage protector and overvoltage protector
Nowadays, every household is inseparable from the use of electricity, and the safety of household appliances has become more and more important to everyone. In order to protect our electricity safety, all kinds of devices that can disconnect the circuit have been produced. Among them, we are more familiar with surge devices, lightning arresters, leakage protection, overvoltage and undervoltage protectors, but we can’t tell them apart. What is the difference between these types of protection devices? Today we will take a look at the differences between surge devices, lightning arrester...Read more -
How is the solar combiner box used?
How is the solar combiner box used? The solar combiner box is a critical component in any large-scale solar panel installation. It is used to combine the output of multiple solar panels into a single electrical circuit, which can then be fed into the inverter. This article will explain how the solar combiner box works, and why it is so important for large-scale solar installations. What is a combiner box A combiner box is used to collect the output of multiple solar panels and send it to an inverter. This ensures that the maximum amount of power is sent to the inverter, which in turn incr...Read more -
The installed capacity of energy storage will double in 2022! Multi-party escort prices fall, photovoltaic + energy storage is expected to be affordable by everyone
At present, the energy storage technology is relatively mature and has the most rapid development momentum. It is also the energy storage method that is most closely related to wind and solar power generation. In 2021, lithium-ion batteries will account for 89.7% of the installed electrochemical energy storage capacity in my country. The lithium-ion energy storage industry chain consists of upstream equipment manufacturers, midstream integrators and downstream end users. The equipment includes batteries, EMS (energy management system), BMS (battery management system), and PCS (converter); i...Read more -
How to choose a home charging pile for new energy vehicles?
When you bought a new energy vehicle, did the 4S store send private charging piles? If it is not delivered, how should I choose a third-party charging pile? Are new energy vehicle home charging piles slow charging? At present, the charging power of household charging piles on the market is generally divided into 7kW, 11kW, and 21kW. There are no restrictions on the vehicle end, and when conditions such as power and temperature are supported, it means that these charging piles can charge the power battery by 7 degrees per hour. , 11 degrees, 21 degrees of electricity. These are generally AC...Read more
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