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Anonymous users2024-02-06When the lightning comes, the varistor of the surge protector will reduce the resistance, so as to drain the current.
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Anonymous users2024-02-05It is used as a protection device for surge pulses and instantaneous overvoltages caused by external (lightning strikes, electromagnetic radiation interference, etc.) or inside the system (system pull-and-close effect, start and stop of inductive and capacitive loads, etc.).
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Anonymous users2024-02-04Surge, due to the start and stop of the high-power load in the power grid, the large voltage of the power grid changes greatly and rapidly. In addition, the use of high-power switching power supplies generates spikes on the power grid. A similar phenomenon is that the calm surface of the lake, when the big boat is speeding by, is generated by large waves.
Surge protectors are used to prevent damage to electrical appliances caused by surges. The simplest surge protector can be a high-permeability magnetic ring that is placed on the power or signal line that needs to be protected. Capacitive filtering can also be added.
Most regular electrical appliances have this circuit at the input.
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Anonymous users2024-02-03Surge protector (surge protector), also known as surge arrester, abbreviated (SPD) is suitable for AC 50 60Hz, rated voltage to 380V power supply system (or communication system), indirect lightning and direct lightning impact or other instantaneous overvoltage surge protection, suitable for family housing, tertiary industry and industrial surge protection requirements, with relative phase, relative, relative centerline, centerline to ground and its combination and other protection modes.
The original surge protector claw gap, which appeared in the late 19th century, was used on overhead transmission lines to prevent lightning strikes from damaging equipment insulation and causing power outages. In the 20s of the 20th century, aluminum surge protectors, oxide film surge protectors and pill surge protectors appeared. Tubular surge protectors appeared in the 30s.
Silicon carbide surge protectors appeared in the 50s. In the 70s, metal oxide surge protectors appeared. Modern high-voltage surge protectors are used not only to limit overvoltages caused by lightning in power systems, but also to limit overvoltages caused by system operation.
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Anonymous users2024-02-02Surge protector, also known as lightning protector, is a kind of differential bright electronic device that provides safety protection for various electronic equipment, instruments and meters, and communication lines.
Surge protector functionWhen the electrical circuit or communication line is in the state, due to external interference suddenly produces a peak current or voltage, the wave virtual trace wide surge protector can be turned on and shunted in a very short time, so as to avoid the surge damage to other equipment in the circuit. The location of the surge protector plays an important role in the protection of transmission lines and electronic components. Products containing surge blocking devices can effectively absorb bursts of tremendous energy to protect connected devices from damage.
Scope of applicationThe surge protector is generally suitable for AC 50 60Hz, rated voltage 220V 380V power supply system, indirect lightning and direct lightning impact, or other instantaneous overvoltage surge protection, suitable for family housing, tertiary industry and industrial surge protection requirements.
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Anonymous users2024-02-01Pro, a surge protector is an electrical protection device that is usually installed at the incoming position of the power system to protect the subsequent terminal equipment from sudden voltage surges (surges) in the power system. It can reduce the voltage peak before the voltage caused by factors such as the trip of the switch of large electrical equipment and the sudden power failure of electronic equipment, and the instantaneous state-only overvoltage that exceeds the internal tolerance of the equipment. The main functions of the surge protector are as follows:
1.Protection of power-consuming equipment: The surge protector can prevent the peak value of voltage and overvoltage from affecting the power-consuming equipment instantaneously, protect the stable operation of the equipment, and prolong the life of the equipment.
2.Protection of electrical equipment: Surge protectors can protect, maintain and repair electrical equipment, reducing maintenance costs.
3.Protection against lightning intrusion: In the event of lightning or sudden electrical network failure, surge protectors can prevent sudden currents from entering the electrical system and protect equipment.
4.Error Protection: Surge protectors protect circuits when transient overvoltages are caused by misoperation of electronic devices, such as miswiring and man-made damage.
In short, surge protector is an important electrical equipment to protect electrical equipment and prevent sudden voltage, which can protect the safe and stable operation of the power system and subsequent terminal equipment to the greatest extent.
Surge protector is a device commonly used to limit the overvoltage of lightning waves, and is commonly used in the power supply system of 220V and 380V power supply. According to the different working principles, surge protectors can be divided into two types: voltage switching surge protectors and voltage limited surge protectors. >>>More
The differences are as follows:
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There will be a filter configuration, such as a filter, a hape filter, or a filter cotton. I was a little curious about the dust bag, and then I inquired with others, and it turned out that the cloth bag was not an ordinary cloth bag, the inside was soft and could breathe air. That's it.
By a photoelectric code disc with an axis in the center, there is a ring through and a dark engraved line on it, and a photoelectric transmitting and receiving device reads it, and obtains four groups of sine wave signals combined into A, B, C, D, each sine wave is 90 degrees apart by a phase difference (360 degrees relative to a cycle), the C and D signals are reversed, and superimposed on the two phases of A and B, which can enhance the stable signal; A z-phase pulse is also output per revolution to represent the zero reference bit. >>>More
The power supply should be connected to the R, S, and T terminals at the input end of the inverter, and must not be connected to the output terminal of the inverter (U, V, W), otherwise the inverter will be damaged. After wiring, the fragmented cords must be cleaned, the fragmented wires may cause abnormalities, malfunctions and malfunctions, and the inverter must be kept clean at all times. When punching holes in the console, be careful not to allow fragments, powders, etc. to enter the inverter. >>>More