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  • Different types of UPS

    Different types of UPS

    Aug , 26 2021
    An Uninterruptible Power Supply refers to a power system that provides emergency power to a load when the input power source or mains power fails, regarded as near-instantaneous protection from input power interruptions. The three general categories of modern UPS systems are online, line-interactive, and offline. Offline UPS: In an off-line ("standby") UPS system, the load is powered directly by t...
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  • Online High Frequency UPS and its advantages

    Online High Frequency UPS and its advantages

    Aug , 26 2021
    High frequency UPS: High frequency UPS is usually composed of IGBT high frequency rectifier, battery converter, inverter and bypass. The IGBT can control its opening and closing by adding control to the gate. The switching frequency of the IGBT rectifier is usually from thousands of Hz to tens of kHz (even up to a hundred kHz) relative to the 50Hz frequency that is far higher than the low frequenc...
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  • Low voltage UPS in today's World

    Low voltage UPS in today's World

    Aug , 26 2021
    Low voltage: Voltage (V) is the measure of the potential difference between two points in an electrical field. Low enough voltage to be considered safe for indoor domestic use and typically 120 volts or less. Low voltage UPS: Uninterruptible power supplies having low voltage are called low voltage UPS. EverExcced offers high efficiency and high quality independent online low voltage UPS ...
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  • Reasons for Solar Panel degradation

    Reasons for Solar Panel degradation

    Aug , 31 2021
    Although crystalline solar power panels are often sold with 25- to 30-year lifespan guarantees, those 30-year-old modules won’t be performing as well as they did on Day 1. Performance declines as solar cells experience degradation due to unavoidable circumstances like UV exposure and weather cycles. Manufacturers realize this, so solar panels come with a power output or performance warranty that u...
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  • Things to know about commercial solar panel degradation

    Things to know about commercial solar panel degradation

    Sep , 01 2021
    Continuing about the reasons for commercial panel degradation from last week, it's important to know the degradation rate of the solar panels you're going to evaluate, how the manufacturers compare and what type of impact takes place on your business due to solar panel degradation is the most important thing. Definition of Solar Panel degradation and what is the meaning of "degradation rate" : You...
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  • What are the possible reasons for the zero voltage or low voltage of the single cell and battery pack?

    What are the possible reasons for the zero voltage or low voltage of the single cell and battery pack?

    Oct , 24 2022
    What are the possible reasons for the zero voltage or low voltage of the single cell? 01) External short circuit or overcharge or reverse charge of the battery (forced overdischarge); 02) The battery is continuously overcharged by high rate and high current, resulting in the expansion of the battery pole core, the direct contact of the positive and negative poles, and the short circuit; 03) Intern...
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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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  • What is a Rack UPS

    What is a Rack UPS

    Jul , 03 2023
    IT Racks Have Unique Power Requirements A rack uninterruptible power supply (UPS) system is designed for use within standard 19-inch IT racks or rack-based enclosures. Rack-based UPS systems must be designed to provide maximum power in compact packages with built-in batteries. A rack UPS generally uses from 1U to 12U of vertical rack space. Most rack UPS systems employ either online (double conver...
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  • Explanation of power terms related to UPS power supply

    Explanation of power terms related to UPS power supply

    Jul , 28 2023
    Transient recovery time: The time required for the output voltage to recover to the specified range when the load suddenly changes (0-100%, 100% -0%), usually in milliseconds (ms). Filter: A device used to eliminate noise, filtering the input or output to obtain pure alternating current. Shielding: A means of isolating and blocking electromagnetic radiation using physical principles...
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  • Industrial UPS with Ride-through Protection

    Industrial UPS with Ride-through Protection

    Jul , 28 2023
    Introduction Electrical utilities use reclosers on medium voltage supply to isolate faults caused by events such as lightning strikes, tree branches across lines, or animals making contact with live wires. The result of a recloser operation is a momentary power outage, lasting for up to a few seconds. These outages can cause an unplanned production stoppage which can be very costly. When momentary...
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  • Why only online UPS topology provides mission critical load protection

    Why only online UPS topology provides mission critical load protection

    Sep , 09 2023
    Why does only online UPS topology provides mission critical load protection? Modern, static UPS systems are broadly classified into three design architectures: on-line, off-line and line interactive. This post describes and compares the three types and explains why – for truly critical loads – online ups topology is the only acceptable approach. Facility executives today face increased demands for...
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  • Zero line electrification poses the following hazards

    Zero line electrification poses the following hazards

    Feb , 03 2024
    (1) When the zero line is disconnected, due to load asymmetry, the neutral point drift is caused, and the voltage of one phase of the light load will increase. When it exceeds the rated voltage of the electrical equipment, it will shorten the service life of the equipment. If it exceeds the rated voltage too much, it may even damage the equipment and cause a "group explosion" of household applianc...
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