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With the continuous expansion of urban scale and the transformation of urban power grids in China, overhead transmission lines are gradually being replaced by underground cable transmission, resulting in a sharp increase in the ground capacitive charging current of the transmission network. In order to reduce the rise of system frequency voltage and system insulation level, ensure the safe and reliable operation of the system and the quality of urban power grid supply, parallel reactors widely used in high-voltage, ultra high voltage, and long-distance transmission systems have been widely applied in urban distribution grids.
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In order to improve the power factor of the power system, parallel capacitor banks are usually used to compensate for the reactive power of the power system. In order to limit the current passing through the capacitor bank caused by high-order harmonic currents in the power system and protect the safe operation of the capacitor bank,
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The 6kV, 10kV, and 35kV power grids in the power system generally adopt a neutral point ungrounded operation mode.
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Magnetically adjustable reactor
During the use of frequency converters and speed controllers, they are often subjected to the impact of surge currents and surge voltages, which can seriously damage the performance and service life of the frequency converters and speed controllers.
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Transformers can be divided into distribution transformers, power transformers, fully sealed transformers, combination transformers, dry-type transformers, oil immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, box type transformer test transformers, corner transformers, high current transformers, excitation transformers, etc.
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A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are the primary coil, secondary coil, and iron core (magnetic core). The main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. Transformers are the basic equipment for power transmission and distribution, widely used in industries, agriculture, transportation, urban communities, and other fields.
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The box type substations in the United States are divided into two types: those with operation corridors (where staff operate inside the box) and those without operation corridors (where staff operate outside the box).
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European box-type transformer substation
The high voltage chamber of a European box transformer is generally composed of high voltage load switches, high voltage fuses, lightning arresters, etc. It can perform power outage and transmission operations and has overload and short circuit protection. The low-voltage chamber is composed of low-voltage air switches, current transformers, ammeters, voltmeters, etc. Transformers are generally made of S9 or dry-type. The electrical equipment components in the European box transformer are all selected from standardized products, and the technical performance of the components meets the corresponding standard requirements.
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SCZ13-10kV series dry-type three-phase on load tap changer transformer
The epoxy resin cast dry-type on load tap changer is equipped with a dry-type on load vacuum tap changer and an intelligent controller (hereinafter referred to as YJK-1).
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SZ13-10kV series dry-type three-phase on load tap changer transformer
The SZ13 series 10kV on load tap changer power transformer is an energy-saving distribution transformer designed and produced by our company. It is widely used in power, railway (public) roads, residential areas, commercial centers, high-rise buildings, remote mountainous areas, dusty and polluted places.
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KEXIN ELECTRIC
Address：No. 230 Shuangbei Middle Road, Shuanglu Street, Dazu District, Chongqing, China.
Tel：+86-023-43333329
Fax：+86-023-43333329
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