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Frequently asked questions for industrial battery chargers: part-1

Nov , 04 2021

From our long experience of providing industrial battery charger solutions to our customers and partners, we have seen that there are some basic questions that are always asked. Here we are sharing some of the common questions and their answers regarding the rectifier chargers for your convenience. How are “equalize”, “boost” and “fast charge” charging different? Each of these terms describes the ...

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What is the Life Expectancy of a Lithium Battery for a stationary application?

Dec , 10 2021

One of the key attractions for moving to lithium batteries is the battery life being multiples of what is possible with lead-acid batteries. Yet, with limited operating data in UPS applications available today, it’s natural for potential users to question how long lithium batteries will actually last. To address this question, it’s necessary to first understand how lithium battery packs degrade un...

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The need for a UPS

Mar , 28 2022

There is a common misconception that the utility power we use, except for occasional power outages, is continuous and constant, but it is not. As a public power grid, the mains system is connected to thousands of various loads. Some of the larger inductive, capacitive, switching power supplies and other loads not only obtain power from the power grid, but also cause damage to the power grid itself...

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Uninterruptible Power System-Use of Inverters & Chargers

May , 09 2022

If you already have a pretty good idea about the available methods for converting ac power to dc power, an inverter covers the other direction: changing dc into ac. Normally, when we speak of an inverter, we mean a device that generates line frequency power from a dc source, to power conventional ac-powered loads such as a personal computer, or industrial controls and instrumentation. A UPS integr...

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UPS For Lift Application

May , 30 2022

Have you ever considered how you would evacuate people from a multistory building in case of power failure? Do you have responsibility for people coming and going from public buildings? If you do, you need to consider how you’re going to handle evacuation in the event of an extended power failure and are not equipped with a standby generator. It doesn’t need to be a dramatic situation just an exte...

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How to choose UPS power supply for the computer room? (Part-1)

Jun , 27 2022

Enterprise data centers are becoming more and more important nowadays. How to ensure the stable operation of enterprise data centers has become a very critical factor. UPS is a standard accessory for many enterprises in data centers, so how to choose a UPS power supply suitable for enterprise applications? UPS classification: In general, UPS systems are divided into three categories, backup (or of...

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How to choose UPS power supply for the computer room? (Part-2)

Jun , 27 2022

Enterprise data centers are becoming more and more important nowadays. How to ensure the stable operation of enterprise data centers has become a very critical factor. UPS is a standard accessory for many enterprises in data centers, so how to choose a UPS power supply suitable for enterprise applications? In our last article we discussed about some options, now we are going to discuss in details....

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Explore and analyze the thermal power of Li- ion cells and battery packs (part-3)

Jul , 04 2022

1. Influence of ambient temperature: The following figure shows the battery temperature rise curve (average temperature of 5 sampling points) during 1C charge and discharge process of 55Ah battery at ambient temperatures of 20°C, 27°C and 40°C. From the figure, we can It can be seen that the charging time of the battery at 20°C is 74min and the discharge time is...

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Relation between UPS and Generators

Jul , 18 2022

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. The UPS point of view： In real operation, whenever a mains failure occurs, the ...

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Effect of input capacitors between UPS and Generator

Jul , 18 2022

Input capacitors used for filtering purpose cause pure apparent power to flow between the supply and the UPS. Such power is referred to as leading or capacitive power. Gensets can manage limited amount of pure leading power, as it interferes with the excitation circuit in the AC generator, leading to voltage oscillations and genset’s shutdown. Safe operating area charts show the allowed gensets’ l...

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Jul , 18 2022

Switch mode power conversion technology dominates nearly every segment of the economy, including demanding aerospace and military power systems that impose requirements more demanding than those imposed by power utilities or industry. Switch mode converters are, for example, successfully hardened against the effects of frequent lightning strikes on aircraft, against the effects of nuclear electrom...

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Theoretical introduction to an AC power system

Jul , 22 2022

AC Power Systems have plenty more units, terms, measurements, interesting waveforms and math to describe their behavior. Any formulas presented here are for reference and validation only. The intension of this paperis convey the concept without having to seriously crunch numbers. All the terms and formulas interweave so itis difficult to create a flow of one topic to another without skipping aroun...

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