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  • Time Relay Working Principle

    Time Relay Working Principle

    Time relay is a control appliance that uses electromagnetic principle or mechanical principle to achieve time delay control. It has many types, such as air damping type, electric type and electronic type. Time relays can be divided into two types: energized time delay type and power-off time dela...
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  • What is the role of solid state relays? Features, principles, advantages and disadvantages, etc.

    What is the role of solid state relays? Features, principles, advantages and ...

    The role of solid state relays Solid-state relays are actually non-contact switching devices with relay characteristics that use semiconductor devices to replace traditional electrical contacts as switching devices. Single-phase SSR is a four-terminal active device, of which two input control ter...
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  • What does 5(20)A on the meter mean?

    What does 5(20)A on the meter mean?

    Everyone is probably familiar with electric energy meters. Nowadays, smart meters are often used to measure and bill household electricity. If you look closely, you will find that there is a parameter 5 (60) written in the prominent position of the electric energy meter. For example, the paramet...
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  • The working principle of the leakage protector

    The working principle of the leakage protector

    1. What is a leakage protector? Answer: The leakage protector (leakage protection switch) is an electrical safety device. The leakage protector is installed in the low-voltage circuit. When leakage and electric shock occur, and the operating current value limited by the protector is reached, it w...
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  • ‚ÄčInstallation method and installation precautions of power surge arrester

    ‚ÄčInstallation method and installation precautions of power surge arrester

    Installation method of power surge arrester 1. Install the power lightning arrester in parallel. The installation position of the charcoal machine is the rear end of the switchboard or the knife switch (circuit breaker) in the classroom of the satellite teaching viewing point. Use four sets of M8...
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  • The main uses and different classifications of high voltage isolating switches

    The main uses and different classifications of high voltage isolating switches

    The main purpose of the high-voltage isolating switch 1. It is used to isolate the power supply to ensure the safety of maintenance, so that the electrical equipment under maintenance has an obvious disconnection point from the power supply; 2. Carry out the switch-off operation to change the ope...
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  • Why does my circuit breaker keep tripping? What’s the reason behind the constant tripping

    Why does my circuit breaker keep tripping? What’s the reason behind the...

    If your circuit breaker keeps tripping, you must reset it. To reset it, turn off the circuit breaker by moving the switch, then turn it back on. For your own safety, keep a safe distance from the panel to prevent any sparks, or wear safety goggles. Before unplugging and plugging in equipment, res...
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  • What is the difference between electronics and electrical

    What is the difference between electronics and electrical

    The difference between electronic and electrical is as follows: 1, the composition of the system is different Electronics: Electronic information systems. Electrical: Electrical control system. 2. Different functions Electronics: Information processing is the mainstay. Electrical: Mainly for ener...
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  • circuit breaker principle

    circuit breaker principle

    When using electricity, no matter how old people are, they will be reminded to pay attention to the safety of electricity use. With the improvement of living standards and the continuous development of science and technology, more and more electrical appliances are used in our lives. At this time...
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  • The 130th Canton Fair was held online and offline, marking the resumption of work and production of all major exhibitions in China

    The 130th Canton Fair was held online and offline, marking the resumption of ...

    "The 130th Canton Fair will be held for the first time online and offline. This is a major international economic and trade event held by China under the background of normalized epidemic prevention and control. It is conducive to maintaining the good momentum of China's...
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  • Analysis on the status quo of China’s lithium battery industry

    Analysis on the status quo of China’s lithium battery industry

    According to the “Analysis Report of China’s Lithium Battery Industry in 2021-Market In-depth Analysis and Profit Forecast” released by the Guanyan Report Network, the demand for lithium batteries for 3C products has increased steadily in recent years, and the market scale of ne...
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  • Under the new pattern of “double cycle”, China’s low-voltage electrical appliance industry will be promoted to green and intelligent transformation

    Under the new pattern of “double cycle”, China’s low-voltag...

    Low-voltage electrical appliances are components or equipment that can manually or automatically switch on and off circuits according to external signals and requirements to realize the switching, control, protection, detection, transformation and adjustment of circuits or non-electric objects. I...
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