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山本 修平
山本 修平
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January 24, 2026 at 9:30 am in reply to: What winding connections are used in power transformers? #331643山本 修平Member
Same as above; chosen for harmonic mitigation, neutral grounding, and system compatibility.
January 24, 2026 at 12:15 am in reply to: How are electric power transformers applied in commercial and industrial power systems? #331559山本 修平MemberPower transformers step voltages up or down to reduce transmission losses and match equipment ratings. In commercial and industrial facilities they interface utility service with internal distribution, MCCs, switchgear, UPS systems and large motors. Redundancy and protection schemes ensure reliability and safety.
January 23, 2026 at 7:22 pm in reply to: What information do power transformer diagrams show? #331524山本 修平MemberPower transformer diagrams show electrical connections, winding arrangements, vector group, tap changer configuration, core layout, terminal designations, and grounding points. They help engineers understand how the transformer interfaces with switchgear, protection, and grid equipment. Diagrams may include auxiliary circuits for cooling fans, pumps, temperature sensors and OLTC control. They are essential for installation, protection setting, testing and troubleshooting because they reveal both primary and secondary relationships and the physical or functional arrangement of components.
January 22, 2026 at 6:08 am in reply to: What does power transformer operation and maintenance involve? #331173山本 修平MemberIt involves controlled loading, tap regulation, monitoring, protection coordination, and long-term servicing including diagnostics, refurbishment, and oil processing.
January 20, 2026 at 9:24 pm in reply to: Where can used power transformers for sale be sourced? #330681山本 修平MemberFrom surplus industrial auctions, utility fleet turnover, refurbishers, and international brokers specializing in MV/HV assets.
January 20, 2026 at 8:27 am in reply to: What industries require a custom power transformer? #330492山本 修平MemberCustom power transformers are needed where standard catalog units cannot meet unique voltage combinations, special vector groups, unusual frequency, extreme environments or strict footprint constraints. Industries such as rail traction, offshore oil and gas, military installations, research laboratories, furnace and rectifier systems, large drives and specialized renewable plants often require custom designs. These applications may involve high harmonic content, very high currents, non standard cooling, or integration with existing legacy equipment that demands tailored engineering.
January 19, 2026 at 7:30 pm in reply to: What is the function of a power transformer bushing in high voltage systems? #330394山本 修平MemberBushings provide insulated current-carrying paths through the tank wall, preventing flashover and enabling HV connections.
January 19, 2026 at 10:49 am in reply to: What repair procedures are performed for transformers on power poles after lightning strike events? #330324山本 修平MemberAfter lightning strikes utilities inspect arresters, bushings, grounds, oil dielectric strength, and winding continuity. Failed arresters or bushings are replaced; damaged units are swapped out. DGA may detect arc gases.
November 12, 2025 at 2:32 pm in reply to: Interested in bitumen transfer and unloading pumps. #327605山本 修平MemberGlobeCore offers gear and screw pumps for bitumen transfer up to 200°C. Flow capacity ranges from 5 to 100 m³/h.
November 12, 2025 at 5:24 am in reply to: Interested in a colloid mill-homogenizer for polymer modification of bitumen. Want to know if the process is cold or hot. #327569山本 修平MemberThe CLM-series mill works with hot bitumen (160-180°C). Polymers are added in molten form or pre-dissolved under controlled heating. Both SBS and crumb rubber processes are supported.
山本 修平MemberGlobeCore supplies complete transformer oil service systems and provides operator training, both on-site and remote. Equipment for purification, regeneration, and vacuum drying is available in portable or stationary versions. Pricing and training options will be provided.
November 9, 2025 at 3:29 am in reply to: Request for a quotation for a TOR-3 Tan Delta Tester for transformer oil and dielectric fluids, including confirmation on whether purchase orders are accepted. #327268山本 修平MemberThe TOR-3 measures tan delta (dissipation factor) and dielectric properties of transformer oils. GlobeCore accepts standard purchase orders. We will provide a formal quotation including terms, datasheet, and acceptance confirmation.
November 9, 2025 at 1:23 am in reply to: Inquiry for price and delivery time of the CMM-4/7 oil purification unit. #327260山本 修平MemberThe CMM-4/7 is a transformer oil purification unit with 4-7 m³/h capacity, performing heating, degassing, and filtration under vacuum. We will send a quotation with pricing and lead time.
November 8, 2025 at 11:17 pm in reply to: A quotation is requested for the breakdown voltage testers TOR-80 and TOR-100. #327252山本 修平MemberThe TOR-80 and TOR-100 testers measure breakdown voltage of insulating oil according to IEC 60156. TOR-80 is semi-automatic (up to 80 kV) and TOR-100 is fully automatic (up to 100 kV). A quotation with technical details and lead time will be provided.
November 8, 2025 at 8:08 pm in reply to: I am interested in the system of regeneration of transformer oil. Kindly share the technical details and quotation for the same. #327240山本 修平MemberGlobeCore offers transformer oil regeneration systems (CMM-R series) that restore used oil to its original dielectric strength. Please confirm the required capacity (e.g., 2, 4, 6, or 10 m³/h) to receive a detailed quotation.
November 7, 2025 at 1:02 pm in reply to: Offer request for oil treatment installation type CMM 0.6L #327122山本 修平MemberThe CMM-0.6L oil treatment unit purifies transformer oil at 600 L/h. It removes water, gases, and impurities using vacuum and heating. We will prepare a quotation with price and technical specifications.
September 17, 2025 at 1:23 pm in reply to: What is oil transformer maintenance and why is it critical? #325591山本 修平MemberTransformer oil degrades over time due to heat, moisture, and oxidation. Regular GlobeCore oil purification extends oil life and protects insulation, saving thousands in premature transformer failures.
September 17, 2025 at 12:03 pm in reply to: What is a hydac oil purifier and are there alternatives? #325582山本 修平MemberHYDAC is a known brand, but there are alternative systems offering equal or better specs. GlobeCore oil purifiers deliver deep filtration (to 1 micron), vacuum dehydration, and regeneration options – with CE certification and global support.
September 15, 2025 at 12:02 pm in reply to: What does an oil filtration unit do in industrial equipment? #325445山本 修平MemberIt filters out solid particles, water, and contaminants that shorten oil life and damage machinery. GlobeCore’s oil filtration units offer flow rates up to 10,000 L/h and are used in power plants, production lines, and maintenance depots.
September 10, 2025 at 8:49 am in reply to: ¿Qué es un recuperador de aceite y para qué sirve en la industria eléctrica? #325133山本 修平MemberEs un sistema móvil o fijo que limpia y regenera aceite dieléctrico contaminado. Los recuperadores de GlobeCore eliminan humedad, gases y subproductos de oxidación, devolviendo la calidad original del aceite y evitando reemplazos prematuros.
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