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  • What Is UPS Input Power Factor and Why It Matters

    What Is UPS Input Power Factor and Why It Matters

    Apr , 12 2025
    Power factor (pf) is the difference between the actual energy consumed in an AC circuit and the apparent power. It will be calculated as a decimal or percentage between 0-1 pf and 0-100%, i.e. 0.9 pF=90%. Meaning of UPS power factor UPS input power factor UPS input power factor is the ratio of UPS input active power to input power. UPS is not only a part of the power supply, but also the load of t...
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  • Radio Frequency Interference Filters (RFI)

    Radio Frequency Interference Filters (RFI)

    Apr , 03 2025
    Chapter 1: Application Scenarios of RFI Filters in Industrial Chargers RFI Filter is a key component for solving high-frequency electromagnetic interference (EMI), which is especially indispensable in high power and high frequency equipment such as industrial chargers. Industrial chargers are often faced with complex electromagnetic environments: fast switching of switching power supplies, high-cu...
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  • Difference between transformer insulation class and insulation strength

    Difference between transformer insulation class and insulation strength

    Mar , 29 2025
    Insulation level refers to the motor (or transformer) winding insulation material used in the heat resistance level. Motor and transformer insulation materials commonly used in the grade for A, E, B, F, H five. Each insulation level of insulation materials have corresponding limit allowable working temperature (motor or transformer winding the hottest point of temperature). Motor or transformer op...
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  • Causes of harmonics in rectifier equipment

    Causes of harmonics in rectifier equipment

    Mar , 21 2025
    1. Nonlinear characteristics   The diodes, thyristors and other power electronic devices in rectifier equipment have nonlinear voltammetry characteristics. Take the diode as an example, when the input AC voltage is in positive half circle, the diode is positive and the current can pass through; At the negative half cycle, the diode is reversed off and the current is almost zero. This characte...
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  • Difference between kVA and kw

    Difference between kVA and kw

    Mar , 15 2025
    kVA is the unit of apparent power and kw is the unit of active power. In alternating current, apparent power does not indicate the actual power consumed in the circuit, but rather the maximum power that can be supplied or the maximum active power consumed in an alternating current circuit. In the case of active power, it is the power needed to enable the equipment to work properly, such as the ele...
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  • How to implement web monitoring in a LAN

    How to implement web monitoring in a LAN

    Mar , 07 2025
    1. Hardware conditions - Network equipment: routers, switches and other equipment with good performance are required, supporting functions such as port mirroring and traffic monitoring, so as to collect and analyze network traffic in the LAN. - Server: Configure a server for deploying web monitoring software or system, with sufficient computing power, storage capacity and memory to process and sto...
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  • Electromagnetic interference

    Electromagnetic interference

    Mar , 01 2025
    I. What is electromagnetic interference: 1. Common sources of interference in power systems may include high-voltage transmission lines, switching operations, and lightning. For example, when a switch is disconnected or closed, it may produce transient voltage or current changes that can cause electromagnetic interference. There are also devices like transformers and motors that generate elec...
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  • Classification of DC Power Supplies

    Classification of DC Power Supplies

    Mar , 01 2025
    DC regulated power supply classification methods, according to the type of output power supply DC regulated power supply and AC regulated power supply; according to the connection between the regulated circuit and the load DC regulated power supply series regulated power supply and parallel regulated power supply; according to the operating state of the adjustment tube is divided into linear regul...
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  • Four operating modes of UPS

    Four operating modes of UPS

    Aug , 23 2024
    1、Normal operation mode The principle of the power supply system is that when the utility power is normal, the machine will convert the alternating current of the utility power to direct current, and then charge the battery for use when the power is interrupted; it is emphasized here that the power supply system will not only act when the power is out, such as when the voltage is too low or high, ...
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