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Daniel Walker
Daniel Walker
Respuestas de foro creadas
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Daniel WalkerMiembro
For 15 kVA to 3 MVA transformers, the most practical setup is a compact service «stack» that covers oil treatment, safe on-site work, and insulation moisture control. I’d recommend GlobeCore’s CMM-series oil processing units (vacuum dehydration/degassing plus fine filtration) for restoring dielectric strength and removing moisture and gases, paired with the UVD vacuum filling unit for controlled vacuum filling/top-up on smaller volumes. For higher safety and fewer accidents during field work, add GlobeCore’s TSS Transformer Safety System to monitor oil level and automatically stop the unit if a leak or abnormal level change occurs during energized processing.
Daniel WalkerMiembroCore, windings, insulation, tap changer, radiators, oil, bushings, sensors, tank, and valves.
Daniel WalkerMiembroPower transformers make long-distance transmission feasible by stepping voltage up for reduced current and lower I²R losses, then stepping voltage down for safe utilization and equipment compatibility. They also provide impedance control, isolation, and grid-level voltage management.
enero 26, 2026 a las 4:31 pm en respuesta a: Why is power factor testing performed on a transformer? #332083Daniel WalkerMiembroUsed for diagnostics of insulation degradation, moisture ingress, or contamination. Trending is more important than single readings.
enero 25, 2026 a las 7:11 pm en respuesta a: What does a power factor correction transformer do? #331902Daniel WalkerMiembroTypically, «power factor correction» is handled by capacitor banks or active filters, not a dedicated transformer. However, transformers involved in PF correction schemes may step voltages for capacitor banks, harmonic filters, or synchronous condensers. Their role is to provide appropriate voltage and isolation so reactive compensation devices can safely connect to the network. The net effect is reduced reactive power flow from the grid, improved PF, lower losses, and better utilization of generation and transmission capacity.
enero 24, 2026 a las 2:23 pm en respuesta a: What causes a power line transformer explosion during fault events? #331681Daniel WalkerMiembroShort circuits or lightning can induce high fault currents that overpressure tanks or flash over bushings; protective devices trip to limit damage.
enero 23, 2026 a las 4:35 am en respuesta a: How is the power factor of a transformer measured in operation? #331391Daniel WalkerMiembroMeters measure real and apparent power to compute PF, influenced by magnetizing current and load.
enero 23, 2026 a las 12:21 am en respuesta a: Where are low voltage power transformers installed? #331359Daniel WalkerMiembroLow-voltage transformers are installed in commercial buildings, industrial control rooms, data centers, hospitals, and residential switchboards where LV distribution (typically 120/240/400/480 V) is required. They support branch circuits, control equipment, UPS interfaces, and lighting systems. Dry-type construction is common indoors due to reduced fire risk and easier maintenance.
enero 22, 2026 a las 10:22 am en respuesta a: What does an isolation power transformer do for safety and signal integrity? #331235Daniel WalkerMiembroIt provides galvanic isolation between primary and secondary circuits, preventing direct conductive paths and reducing fault or shock hazards. In instrumentation or audio systems, isolation also reduces ground loops and noise coupling. In industrial settings, isolation improves personnel protection and equipment reliability.
enero 21, 2026 a las 12:16 pm en respuesta a: What are the main advantages of the LFD method compared to traditional transformer drying methods? #330894Daniel WalkerMiembroThe main advantage of LFD is that it heats the windings internally and uniformly, instead of relying on external hot air or hot oil. This shortens drying time for thick insulation and reduces temperature gradients that can damage paper. LFD can often be done without removing the active part, and with better control of insulation temperature. Compared to ovens, it is more energy-efficient for large transformers and achieves deeper, more homogeneous drying of massive cellulose systems.
noviembre 11, 2025 a las 2:31 pm en respuesta a: Inquiry regarding the USB-6 inhibitor injection unit – can it also be used for adding antioxidants after oil regeneration? #327510Daniel WalkerMiembroYes, the USB-6 system restores antioxidant additives in transformer oil after regeneration and allows precise inhibitor dosing. Additional technical documentation can be provided.
noviembre 10, 2025 a las 11:30 am en respuesta a: Interested in adding gearbox oil replacement capability for wind turbine maintenance. Request for technical and budgetary quote for the CMM-G oil changer, including data sheet, dimensions, trailer type, delivery time, pricing, warranty, and transport terms. #327390Daniel WalkerMiembroThe CMM-G wind turbine gearbox oil changer allows oil replacement up to 160 m height and includes filtration and heating modules. Trailer-mounted or stationary versions are available. We’ll send full technical data, layout drawings, delivery schedule, pricing, and warranty information.
noviembre 9, 2025 a las 8:16 pm en respuesta a: Need urgent pricing for replacement filters: 150 air filters (520×520×20 mm, 40 micron fiberglass) and 18 output filters (FE-27, 1 micron) for an oil treatment machine. #327332Daniel WalkerMiembroGlobeCore supplies replacement filters for CMM-10 and other models. We’ll confirm compatibility, provide pricing for the requested filters, and indicate delivery time.
noviembre 7, 2025 a las 4:39 am en respuesta a: Please provide price quotation TRANSFORMER OIL PURIFICATION PLANT CMM-4.0 (4000 L/h) #327078Daniel WalkerMiembroThe CMM-4.0 transformer oil purification plant operates at 4000 L/h. It removes moisture, gases, and impurities, restoring dielectric strength. We will send a quotation including pricing and delivery time.
noviembre 6, 2025 a las 4:35 pm en respuesta a: REQUEST FOR A QUOTE / Transformer oil treatment machine (Dielectric) #327032Daniel WalkerMiembroGlobeCore offers dielectric oil treatment systems (CMM range) for dehydration and gas removal. Please indicate the capacity and voltage supply for a detailed quotation.
noviembre 5, 2025 a las 7:58 am en respuesta a: Inquiry about Vacuum Drying plant for transformers #326892Daniel WalkerMiembroThank you for your inquiry. GlobeCore manufactures vacuum drying plants for transformer cores and windings. These systems remove moisture under deep vacuum (up to 0.1 mbar) with uniform heating and temperature control. The units can be equipped with automatic oil filling, nitrogen protection, and data logging systems. Typical production lead time is 10-14 weeks depending on the chamber size. Please share transformer dimensions and weight to prepare a detailed quotation.
septiembre 17, 2025 a las 8:19 am en respuesta a: What does transformer operation and maintenance involve? #325539Daniel WalkerMiembroIt includes regular inspections, oil analysis (DGA, BDV), temperature control, and purification. GlobeCore supports this with mobile units for oil regeneration and monitoring tools – helping operators extend transformer lifespan and avoid unplanned outages.
septiembre 17, 2025 a las 7:45 am en respuesta a: What does an oil purification unit do in heavy industry? #325531Daniel WalkerMiembroIt removes contaminants from lubricating or insulating oils to restore optimal performance. GlobeCore’s purification units serve transformers, hydraulics, turbines, and compressors, reducing maintenance costs and oil waste.
septiembre 17, 2025 a las 7:24 am en respuesta a: What is a transformer oil purification plant used for? #325524Daniel WalkerMiembroA transformer oil purification plant restores used insulating oil by removing water, gases, acids, and sludge. GlobeCore builds full-cycle plants with vacuum degassing, adsorbent-based regeneration, and real-time BDV control – ideal for utilities and substations.
septiembre 9, 2025 a las 9:34 pm en respuesta a: What is a cold trap and how is it used in transformer maintenance? #325063Daniel WalkerMiembroA cold trap condenses water vapor in vacuum drying setups. GlobeCore uses cold trap technology in its vacuum drying ovens to ensure complete moisture removal during transformer core and winding drying.
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