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Megan Young
Megan Young
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enero 27, 2026 a las 6:14 pm en respuesta a: Why should we use star-delta connection in step down power transformers? #332297Megan YoungMiembro
Enables phase shift, neutral availability, reduces harmonics, and suits LV distribution.
Megan YoungMiembroVector group describes phase displacement, winding configuration (Y/D/Z), and connection (HV/LV). It informs parallel operation, harmonic behavior, and protection settings. Common groups include Dyn11, YNd1, Yy0.
enero 26, 2026 a las 11:07 am en respuesta a: Why does power loss in a transformer increase under heavy load? #332023Megan YoungMiembroLoad currents increase copper (I²R) losses and stray losses. Thermal rise accelerates oil aging and insulation degradation, raising dielectric losses.
enero 25, 2026 a las 8:08 am en respuesta a: What topics are covered in electrical power, motors, controls, generators, and transformers? #331819Megan YoungMiembroThese industrial texts integrate machinery, controls, and power conversion. Transformer sections cover voltage transformation, impedance, losses, vector groups, cooling, and protection within broader plant power systems.
enero 25, 2026 a las 6:20 am en respuesta a: How does a power step up transformer increase voltage levels? #331805Megan YoungMiembroThe secondary winding has more turns than the primary, boosting voltage while current decreases proportionally to conserve apparent power minus losses.
enero 24, 2026 a las 3:20 am en respuesta a: What are standard ratings for power transformers? #331583Megan YoungMiembroRatings include voltage class, kVA/MVA, cooling type (ONAN/ONAF/ODAF), impedance, insulation class, and temperature rise. They follow IEC/IEEE catalog ranges.
enero 23, 2026 a las 4:19 am en respuesta a: Where are medium power transformers installed in grid systems? #331389Megan YoungMiembroMedium power transformers (typically 5-60 MVA, MV/HV interfaces) are installed in sub-transmission and distribution substations. They reduce transmission voltages to feeder voltages for industry and cities, forming a key intermediate step between bulk transmission and final distribution.
enero 20, 2026 a las 11:54 am en respuesta a: Where are power distribution transformers installed in electrical networks? #330534Megan YoungMiembroDistribution transformers are installed on poles, pad-mounted enclosures, vaults, and kiosks to step MV feeders down to LV service for homes, commercial buildings, and industry.
enero 20, 2026 a las 6:52 am en respuesta a: What determines power transformer cost in industrial procurement? #330480Megan YoungMiembroCost is driven by kVA/MVA rating, voltage class, insulation level, cooling system, and special features like OLTCs, online monitoring, and seismic or fire requirements. Copper and core steel market prices significantly influence base cost. Custom vector groups, multiple windings, higher efficiency (low-loss) designs, and stringent test requirements add expense. Logistics, such as transportation constraints, site access, and installation complexity, also factor into the total procurement price seen by industrial customers.
enero 20, 2026 a las 1:51 am en respuesta a: What applications require Eaton control power transformers? #330442Megan YoungMiembroControl power transformers feed relays, PLCs, contactors, and meters in automation, switchgear, and motor control centers, ensuring stable low-voltage auxiliary power.
enero 19, 2026 a las 11:44 pm en respuesta a: What cooling methods are used in power transformers? #330426Megan YoungMiembroCommon cooling methods include ONAN (oil natural air natural), ONAF (oil natural air forced), OFAF (oil forced air forced), and OFWF (oil forced water forced). Dry-type units use AN (air natural) or AF (air forced). Radiators, fans, oil pumps, and heat exchangers enhance heat removal and allow higher loading. Some large units use directed oil flow and internal ducts to manage winding hotspots. Cooling class is a key specification, directly influencing kVA rating and overload capacity.
enero 19, 2026 a las 9:21 pm en respuesta a: How is power factor for a transformer corrected in industrial facilities? #330408Megan YoungMiembroCapacitor banks or synchronous condensers offset magnetizing reactive power, improving PF at light loads and reducing demand charges.
Megan YoungMiembroApparent power for single phase is S=VI; for three phase S=?3VI. Real power depends on power factor and losses.
noviembre 11, 2025 a las 10:12 am en respuesta a: A large refinery with over 170 transformers requires a transformer oil filtration machine. Please include data sheet, specifications, and delivery time. #327494Megan YoungMiembroFor high-capacity transformer networks, the CMM-12 and CMM-24 systems are optimal. They provide degassing, drying, and purification for oils in transformers up to 100 MVA. Technical specifications and delivery schedule will be included.
noviembre 11, 2025 a las 4:49 am en respuesta a: We are requested to quote for one customer the following items: TOR-80 with battery, TOR-2, TOR-3, and Reid vapor pressure measuring device. Please include packing, delivery time, origin, tariff code, minimum quantity, validity, and product sheets. #327474Megan YoungMiembroThe TOR-80, TOR-2, and TOR-3 analyzers are available for immediate production. Each device complies with IEC standards. We will provide detailed pricing, delivery time, product documentation, and packing information. The Reid vapor pressure unit can be offered separately upon confirmation of specification.
noviembre 10, 2025 a las 3:37 am en respuesta a: Request for transformer oil filtration machine. #327360Megan YoungMiembroGlobeCore filtration plants remove moisture, gases, and mechanical impurities from transformer oil, improving breakdown voltage and dielectric strength. We’ll send specifications and price details.
noviembre 9, 2025 a las 2:30 pm en respuesta a: Looking to purchase a TOR-3 Tan Delta Tester for transformer oil and dielectric fluids. #327310Megan YoungMiembroThe TOR-3 measures the dissipation factor (tan delta) of transformer oil and dielectric fluids in accordance with IEC standards. We will assist with the purchase process and provide technical documentation and pricing.
noviembre 9, 2025 a las 12:56 pm en respuesta a: Need the cost of purchasing the CMM-24R/10000 Type H and estimated delivery charges. #327304Megan YoungMiembroThe CMM-24R/10000 Type H is a high-capacity oil regeneration plant operating at 24 m³/h. We’ll send pricing, delivery time, and transport cost estimates.
septiembre 17, 2025 a las 11:20 am en respuesta a: What is oil filtering in the context of industrial maintenance? #325574Megan YoungMiembroOil filtering removes solid particles that cause wear and clog systems. GlobeCore units provide 3-5 stage filtration down to 1 �m – ideal for extending oil and equipment life in manufacturing, power, and transport industries.
septiembre 17, 2025 a las 8:51 am en respuesta a: What is the transformer oil filtration process? #325545Megan YoungMiembroIt includes heating, coarse filtration, vacuum drying, fine filtration, and degassing. GlobeCore automates all stages in one system – restoring BDV above 70 kV and removing water to <10 ppm.
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