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石川 浩
石川 浩
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石川 浩会员
S = V × I (single-phase) or S = ?3 × V × I (three-phase). Determines kVA/MVA rating.
石川 浩会员An electrical power transformer is an AC electromagnetic apparatus that transfers power between voltage levels at constant frequency via inductive coupling, optimizing transmission and distribution efficiency.
石川 浩会员Transformer power rating is defined by its apparent power capability at rated voltage, current, frequency, and cooling conditions. Because a transformer transfers AC energy with reactive components, kVA is used instead of kW to avoid dependence on load power factor. Ratings include thermal considerations such as insulation class, temperature rise, and cooling mode.
石川 浩会员In industrial or hydro contexts a power house transformer refers to the generator step up transformer feeding the grid. It converts generator voltage to transmission levels and provides isolation, impedance and robust fault performance.
石川 浩会员Нет «универсально лучшего» маслаочистительного оборудования — выбор зависит от типа масла (трансформаторное, турбинное, гидравлическое), характера загрязнений (вода свободная и растворённая, частицы, лак/варниш, кислоты), требуемой пропускной способности и целевых показателей чистоты (ISO-классы, диэлектрическая прочность, кислотное число). Для трансформаторного масла обычно оптимальны вакуумные дегазаторы/деаэраторы с вакуумной дегидратацией и тонкой фильтрацией, они одновременно удаляют воду и газы и восстанавливают диэлектрические свойства; для турбинных и гидравлических систем эффективны передвижные установки с микро-стекловолоконными картриджами и водоотделителями, обеспечивающие достижение требуемого уровня чистоты по частицам; при проблеме лакообразования и растворённых нерастворимых отложений используются электростатические коалессеры и адсорбционные системы (иерархия адсорбентов, молекулярные сита, активированный оксид алюминия/смолы) для удаления растворённых загрязнений и варниша. Перед покупкой проведите анализ масла (Karl Fischer для воды, счёт частиц, кислотное число, диэлектрическая прочность), определите целевой ISO-класс и пропускную способность, затем выбирайте установки по их эффективности удаления конкретных контаминантов, доступности расходников и сервисной поддержки.
石川 浩会员Global power transformer sales are driven by electric utilities, independent power producers, renewable energy developers, heavy manufacturing, oil and gas, mining, rail and metro systems, data centers and large commercial real estate. Grid expansion, urbanization and electrification of transport and industry increase demand. Integration of wind and solar plants requires new step up and collector transformers. Aging infrastructure replacement in developed regions and rapid load growth in emerging economies together sustain ongoing transformer procurement.
石川 浩会员During a power surge such as lightning or switching overvoltage transformers experience elevated terminal voltages and steep wave fronts. Insulation and bushings are stressed and internal electric fields increase. Surge arresters and protective devices limit peak voltage and protect the insulation system. If protection is inadequate or insulation already weakened, partial discharges or flashover can occur, leading to local damage or more severe faults. Repeated surges accelerate aging even if immediate failure does not occur.
一月 19, 2026 2:56 上午 回复至： What is the definition of a power transformer in electrical engineering? #330280石川 浩会员A power transformer is a static electromagnetic device that transfers energy between voltage levels at medium or high power, providing isolation and impedance within power networks.
十一月 11, 2025 12:23 下午 回复至： Need a quotation for a transformer oil regeneration system suitable for multi-grade industrial oils. #327502石川 浩会员The CMM-R series performs regeneration and purification of both transformer and industrial oils. It restores dielectric strength and removes acids and oxidation products. Technical details and pricing will be provided.
十一月 11, 2025 12:37 上午 回复至： Request for indicative price for the CMM-260C transformer drying unit, delivery to Europe. #327458石川 浩会员The CMM-260C system is a stationary transformer drying unit operating under deep vacuum. We will provide indicative pricing, specifications, and delivery schedule.
石川 浩会员The TOR-3 Tan Delta Tester measures the dissipation factor and resistivity of dielectric fluids according to IEC standards. It is supplied ready for laboratory or field use. Pricing, delivery terms, and documentation will be provided.
石川 浩会员The CMM-260C is a stationary transformer drying unit designed for vacuum drying of transformer cores and windings. It provides deep dehydration and can be equipped with heating and nitrogen protection. A quotation will be issued with specifications.
石川 浩会员The CMM-4.0F oil filtration unit purifies transformer oil at 4 m³/h. We will provide a quotation including delivery time and available options.
石川 浩会员Thank you for reaching out. Please describe the issue or type of support needed for your CMM-2.2 oil purifier. Our technical team can assist with troubleshooting, maintenance, or spare parts.
石川 浩会员It removes impurities such as water, gases, acids, and particles using thermal, vacuum, and adsorption techniques. GlobeCore’s systems are known for their speed, safety, and ability to restore oil to “like-new” condition on-site.
石川 浩会员It includes oil analysis (BDV, moisture, DGA), mechanical inspections, and predictive monitoring. GlobeCore supports transformer maintenance with advanced oil purification and testing equipment – helping detect and prevent failures before they occur.
九月 10, 2025 9:05 上午 回复至： Is there a waste oil cleaning machine that restores oil to usable condition? #325135石川 浩会员Yes. GlobeCore offers waste oil cleaning machines capable of deep regeneration – not just filtration. These systems remove sludge, acid compounds, and water from used transformer, turbine, and hydraulic oils, making them fit for reuse and reducing disposal costs.
石川 浩会员It removes dissolved gases, water, and particles that degrade dielectric strength. GlobeCore’s purification machines use vacuum degassing, fine filtration, and heating to restore oil to IEC standards – ensuring transformer reliability and safety.
石川 浩会员Implica remover contaminantes sólidos y líquidos para preservar la funcionalidad del aceite. GlobeCore fabrica sistemas portátiles y estacionarios con filtración de 1 micra, secado al vacío y control digital de humedad y temperatura.
石川 浩会员Turbo Oil 2197, a synthetic aviation lubricant, is priced based on certification and supply chain factors. GlobeCore regeneration systems extend its usable life, reducing the frequency of new oil purchases.
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