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  • UPS and generators or a lifetime of friendship

    UPS and generators or a lifetime of friendship

    Feb , 15 2023
    UPS and generators should be best friends, smoothly cooperating to improve site’s resiliency. Often this might not be the case, due to mutual misunderstandings and lack of information. This article is a comprehensive guide and essential knowledge base about UPS input performance and its impact on generators’ operation. Using a UPS with generators In real operation, whenever a mains failure occurs,...
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  • how to prevent the damage caused by excessive discharge of UPS battery

    how to prevent the damage caused by excessive discharge of UPS battery

    Feb , 15 2023
    What does UPS battery deep discharge and excessive discharge mean? Deep discharge generally refers to the discharge of about 80% of the rated capacity of the battery. The power UPS power battery must have some active substances sink after being used for a period of time. If the active substances are not activated in time, it is bound to have some impact on the capacity of the battery. Therefore, i...
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  • How to understand the sources of power quality distrubances

    How to understand the sources of power quality distrubances

    Feb , 16 2023
    Power quality disturbances are categorized into voltage sag, voltage swell, transient, harmonic, voltage notch, and flicker. Power quality research is the study of various phenomena that cause power quality disturbance to occur and the development of mitigation strategy. Power quality distrubances can cause innumerable problems in industrial facilities. While a facility owner’s first inclination m...
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  • Answers to the characteristics of lead-acid batteries

    Answers to the characteristics of lead-acid batteries

    Feb , 16 2023
    1. How AGM vs Lead Acid Batteries Work The AGM battery and the standard lead acid battery are technically the same when it comes to their base chemistry. They both use lead plates and an electrolyte mix of sulfuric acid and water and have a chemical reaction that produces hydrogen and oxygen as a byproduct. However, this is when they start to diverge. Here’s how: A. Flooded Lead Acid Battery The f...
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  • Lead-acid battery characteristics

    Lead-acid battery characteristics

    Feb , 24 2023
    Ⅰ： Electromotive force, internal resistance and terminal voltage of lead-acid battery: 1): Electromotive force: refers to the potential difference between the two poles, which depends on the relative density and temperature of the electrolyte.The relative density temperature coefficient of lead-acid battery is 0.00075, that is, the relative density decreases by 0.00075 when the electrolyte tempera...
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  • Effect of ambient temperature on battery life

    Effect of ambient temperature on battery life

    Mar , 01 2023
    1）Temperature will affect battery capacity At different temperatures, the viscosity of the sulfuric acid solution in the battery will be inconsistent. For example, when the battery is at a temperature below 0°C, as the temperature decreases, the resistance of the sulfuric acid solution will continue to increase, which will directly increase the weight of the electrode. The effect of polarization, ...
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  • Battery capacity test

    Battery capacity test

    Mar , 09 2023
    Method 1: offline measurement (1) After fully charging the battery pack disconnected from the power supply system, let it stand for 1-24 hours, and start at the ambient temperature of 25 ℃ ± 5 ℃ Discharge; (2) The terminal voltage of the battery shall be measured before discharge. During discharge, the discharge current time and ambient temperature of the battery shall be measured and recorded The...
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  • Peak shaving and smart grids: the new frontier of UPS systems

    Peak shaving and smart grids: the new frontier of UPS systems

    Mar , 10 2023
    The way we use UPS systems today has changed a lot. Technological improvements in UPS efficiency, versatility, and flexibility have enabled Borri to approach nonstandard UPS applications such as peaking shaving and power buffering. These techniques are in turn related to UPS systems being able to fulfill the demand for integration into Smart Grids. In this article, we get a closer look at how peak...
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  • How Lithium-ion Batteries Work

    How Lithium-ion Batteries Work

    Mar , 23 2023
    Lithium-ion batteries are popular because they have a number of important advantages over competing technologies: They're generally much lighter than other types of rechargeable batteries of the same size. The electrodes of a lithium-ion battery are made of lightweight lithium and carbon. Lithium is also a highly reactive element, meaning that a lot of energy can be stored in its at...
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  • What are the factors that are unfavorable to lead-acid batteries?

    What are the factors that are unfavorable to lead-acid batteries?

    Apr , 15 2023
    There are many factors that are unfavorable to the battery, mainly in the charging and discharging phase. (1). The "second super" discharge stage is mainly the discharge current overvalue, that is, the discharge exceeds the allowable current value for a long time; the second problem of discharge is over-discharge, that is, exceeding the allowable discharge capacity of the battery, which is called ...
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  • Three-stage charging of lead-acid battery

    Three-stage charging of lead-acid battery

    Apr , 15 2023
    1. What is the three-stage charging of lead-acid batteries? The charging method of lead-acid batteries should be divided into three stages, namely: constant current charging - constant voltage charging - trickle charging. Constant current charging stage: charge to 13.4V with 0.2C10 A current. Constant voltage charging stage: 2.4V/cell, charging time 3h, cut-off current 0.02C10A Trickle charge phas...
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  • What are the reasons for the sulfation of lead-acid battery plates?

    What are the reasons for the sulfation of lead-acid battery plates?

    Apr , 15 2023
    The reasons for plate sulfation are as follows: 1) The initial charging of the battery is insufficient or the initial charging interruption time is long; 2) The battery is insufficiently charged for a long time; 3) Failure to charge in time after discharge; 4) Frequent overcharging or low current deep discharge; 5) If the density of the electrolyte is too high or the temperature is too high, lead ...
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