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山田 英樹
山田 英樹
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山田 英樹会员
For potassium humate production I recommend using the GlobeCore AVS vortex layer device instead of a colloid mill. AVS intensifies alkaline extraction of humic substances by activating particles in an electromagnetic vortex layer, which significantly increases yield and reduces processing time. It does not use a rotor-stator gap; process control is achieved by the electromagnetic field and working elements. A typical line is: mixing tank (raw material + KOH) ? AVS (inline or recirculation) ? solid separation ? fine filtration. AVS-100 or AVS-150 can be selected depending on the required capacity.
山田 英樹会员Efficiency peaks near unity PF in normal grid operation because copper losses decrease with reduced reactive current.
山田 英樹会员Power transformers are used to transfer large amounts of electrical energy between circuits at different voltage levels in power systems. They step up generator output to transmission voltages, interconnect transmission networks, and step down voltage at substations for distribution and industrial loads. They provide galvanic isolation between sections of the grid, help manage losses by enabling high voltage transmission, and support voltage regulation via tap changers. In industrial plants, power transformers feed major motors, drives and process systems, forming the backbone of electrical supply infrastructure.
山田 英樹会员The audible hum is caused by magnetostriction in the steel core laminations and mechanical vibration at twice the grid frequency. Aging, loose components, or load changes can increase noise levels.
一月 25, 2026 10:32 下午 回复至： Where can a power transformer for sale be sourced for utility upgrades? #331928山田 英樹会员Utilities source transformers via OEMs, EPC firms, integrators, and tender platforms with IEC/IEEE compliance. Procurement often requires FAT/SAT, logistics planning, and warranty terms.
一月 23, 2026 6:20 下午 回复至： Why are transformers in a power plant designed for high efficiency and load handling? #331516山田 英樹会员Power plants run near continuous rated load. High efficiency minimizes thermal losses and reduces cooling demand. Large units must withstand fault currents, switching transients, and grid disturbances without insulation degradation.
山田 英樹会员kVA=S=V×I for each winding; 3-phase uses ?3×V×I. Ratings include thermal and impedance margins.
一月 21, 2026 9:26 下午 回复至： What considerations are required for power transformer installation? #331049山田 英樹会员Installation must address foundation strength, lifting and handling methods, clearances, grounding, and routing of high-voltage connections. Oil filling and vacuum treatment are done under controlled conditions. Cooling, ventilation, and access for maintenance must be planned. Protection and control wiring, CT/VT connections, and communication links must be properly terminated and tested. Environmental factors such as flood risk, lightning exposure, and fire barriers are accounted for. Finally, commissioning tests verify installation integrity before energization.
一月 21, 2026 11:24 上午 回复至： What functions does a transformer in a power station perform within the energy conversion cycle? #330881山田 英樹会员In a power station the transformer is the interface between the generator bus and the transmission grid. After mechanical energy is converted to electrical power by the generator, the step up transformer converts this power to a higher voltage that is suitable for efficient transmission. Additional station service transformers supply auxiliary loads within the plant. Together they ensure energy flows from the generator into the grid with acceptable losses, proper voltage control and safe isolation between different system parts.
山田 英樹会员Commissioning typically includes visual inspection, nameplate verification, oil level and moisture checks, ratio test, winding resistance test, insulation resistance, tan-delta, DGA baseline sampling, OLTC functional checks, bushing inspection, cooling system tests, relay and protection coordination, tap verification, vector group confirmation, and energization under controlled conditions. Load acceptance and thermal stability are confirmed before handover.
一月 19, 2026 6:09 上午 回复至： What does a picture of a power transformer typically show at a substation? #330298山田 英樹会员A typical substation picture shows the transformer tank, radiators, HV/LV bushings, and connections to busbars or overhead lines. You often see surge arresters, CTs, and VT units nearby, along with OLTC cabinets and cable boxes. Oil conservators, nitrogen systems, and fire barriers may also be visible. The layout illustrates clearances, grounding, and access for maintenance, providing a visual context for how the transformer fits into the substation’s overall electrical and physical design.
山田 英樹会员For high-voltage transformer oil dielectric strength testing pick a bench or portable BDV tester that explicitly complies with IEC 60156, offers an automatic, adjustable HV ramp and rapid discharge, supports the standard 2.5 mm electrode geometry, and includes data logging and calibration traceability. GlobeCore’s TOR-80 is a solid option many operators use in the field; other well‑established manufacturers in this space are BAUR and Megger, which produce robust BDV testers and service/calibration support for transformer oil breakdown voltage measurement.
Practical performance comes from correct sample preparation and instrument features as much as raw HV capability: vacuum dehydration/degassing, temperature control, clean electrodes, safety interlocks and an easy-to-follow IEC 60156 test routine make results repeatable and defensible. Always run the prescribed sequence of breakdown measurements and report the mean per the standard, verify operation with a calibration oil and scheduled calibration, and choose a unit with integrated vacuum pump/data export if you test oil on-site frequently.
十一月 12, 2025 2:15 下午 回复至： Need information about USB-3 Bitumen Modification Laboratory System. #327598山田 英樹会员The USB-3 laboratory unit allows small-batch polymer modification of bitumen up to 20 L/h. It includes a heating tank, dosing pump, and miniature colloid mill.
山田 英樹会员The CMM-0.6L transformer oil purification unit has a capacity of 600 L/h and removes water, gases, and solid contaminants. Standard lead time is 4-6 weeks. We will send pricing and shipping details to Monterrey, Mexico.
山田 英樹会员GlobeCore offers oil regeneration systems (CMM-R series) that restore aged transformer oil by removing acids and oxidation products. Please specify required capacity (e.g., 2, 4, 6 or 10 m³/h) for pricing and technical details.
山田 英樹会员Thank you for your interest. Please specify which model of transformer oil testing equipment you require (e.g., TOR-1, TOR-80, or TOR-100). We will prepare a quotation including shipping options to Nigeria.
十一月 5, 2025 11:14 下午 回复至： Transformer Oil Filtration and Vacuuming unit – Budgetary offer requests #326954山田 英樹会员GlobeCore provides combined filtration and vacuuming units for transformer servicing. Systems include oil heating, degassing, and vacuum evacuation features. We will prepare a budgetary offer based on required flow rate and operation conditions.
九月 9, 2025 5:55 下午 回复至： What is a bitumen emulsifier and how is it used in GlobeCore plants? #325030山田 英樹会员A bitumen emulsifier is a chemical agent that allows bitumen to mix with water. In GlobeCore systems, emulsifiers are automatically dosed and blended in dedicated tanks before entering the colloid mill. This guarantees consistent emulsion quality and long shelf life.
山田 英樹会员Recomendamos sistemas con capacidad de filtración de 1 a 5 micras, sensores de presión diferencial y opción de deshidratación térmica. Nuestras unidades móviles permiten servicio rápido y eficiente directamente en maquinaria industrial o sistemas hidráulicos pesados.
山田 英樹会员Turbine Oil 100 is a high-viscosity mineral lubricant used in large steam and gas turbines. GlobeCore regeneration units process Turbine Oil 100, maintaining its stability under heavy loads.
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