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Lucas Martins
Lucas Martins
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enero 26, 2026 a las 4:16 pm en respuesta a: Why is power factor important in transformers during operation? #332081Lucas MartinsMiembro
Same as above: key indicator of insulation and loading condition.
enero 26, 2026 a las 1:26 pm en respuesta a: Why is a step up transformer used in a solar power plant? #332056Lucas MartinsMiembroSolar arrays and inverters produce MV levels (0.6-35 kV). Step-up transformers raise voltage to transmission level and synchronize with utility grids.
enero 26, 2026 a las 12:09 pm en respuesta a: Why is a dry type power transformer preferred for indoor facilities? #332032Lucas MartinsMiembroDry type transformers eliminate oil, reducing fire risk and environmental containment requirements. They are used in buildings, tunnels, and industrial facilities where ventilation and fire regulations apply.
enero 26, 2026 a las 10:36 am en respuesta a: Why does a power station use a step up transformer for transmission? #332019Lucas MartinsMiembroStep-up transformers match generator voltages to the transmission network. Long-distance transmission at high voltage minimizes thermal losses and stabilizes grid power flow.
enero 26, 2026 a las 12:35 am en respuesta a: How are power transformer calculations performed for voltage and current? #331941Lucas MartinsMiembroVoltage and current calculations rely on turns ratio and load characteristics. Voltage follows Vp/Vs = Np/Ns, while current follows inverse ratio. Three-phase uses ?3 relationships for line quantities.
enero 25, 2026 a las 8:59 pm en respuesta a: How does a transformer convert 3-phase power to single-phase? #331916Lucas MartinsMiembroUsing special configurations such as open-delta, Scott-T, or dedicated single-phase secondary windings fed from a 3-phase primary.
enero 25, 2026 a las 7:21 am en respuesta a: What is the output power of an ideal transformer according to theory? #331813Lucas MartinsMiembroTheoretical output power equals input power with no real losses, so P_out = P_in. Current increases as voltage decreases and vice versa, maintaining constant power transfer.
enero 23, 2026 a las 9:56 pm en respuesta a: How do power transformers and distribution transformers differ in application? #331543Lucas MartinsMiembroPower transformers interface generation and transmission networks; distribution transformers supply end users. Power units prioritize full-load efficiency; distribution units must handle variable loading and regulation.
enero 23, 2026 a las 1:25 am en respuesta a: Who are major high-power transformer manufacturers? #331367Lucas MartinsMiembroMajor high-power transformer manufacturers include large global OEMs and regional heavy electrical companies capable of producing GSUs, HVDC converter transformers, and large autotransformers. These firms operate specialized plants with large core-handling, vacuum oil-processing, and high-voltage test facilities. They focus on 100 MVA and above, high or extra-high voltage ratings, and custom engineered-to-order designs for utilities, interconnectors, and generation projects across multiple continents.
enero 22, 2026 a las 10:03 am en respuesta a: Are CMM-12R oil regeneration systems suitable for other industrial oils? #331230Lucas MartinsMiembroYes – while designed for transformer insulating oil, they can also treat turbine oil, hydraulic oil, FR3, Midel and other industrial fluids with similar degradation challenges.
enero 22, 2026 a las 9:27 am en respuesta a: Can the CMM-12R oil regeneration systems be controlled remotely? #331221Lucas MartinsMiembroYes – remote control options are available, including smartphone or PC interfaces, allowing operators to monitor processes or adjust parameters off-site.
enero 22, 2026 a las 3:47 am en respuesta a: How does the oil level sensor in the TSS enhance operational safety? #331140Lucas MartinsMiembroThe oil level sensor enables precise monitoring of the transformer’s oil height during processing. Operators can preset acceptable upper and lower limits. If oil deviates beyond preset thresholds – indicating possible leaks or pump issues – the TSS automatically closes valves and stops connected processing units to protect the transformer.
enero 22, 2026 a las 12:52 am en respuesta a: What does a test on a power transformer verify? #331098Lucas MartinsMiembroIt confirms functionality, insulation quality, fault withstand capability, and correct tap settings before energization.
enero 21, 2026 a las 2:04 pm en respuesta a: What are the environmental or operating condition requirements for an LFD device? #330936Lucas MartinsMiembroLFD does not require special ambient conditions, but it does need a controlled working environment to be effective and safe. The site must provide stable power for high current, good grounding, and protection from rain and dust. Ambient temperature mainly affects heat losses, not the process itself. More important are tightness of the tank, ability to maintain deep vacuum, and reliable temperature monitoring, because drying efficiency depends much more on vacuum quality and insulation heating control than on external climate.
enero 21, 2026 a las 7:11 am en respuesta a: What principles guide high voltage power transformer design? #330820Lucas MartinsMiembroHV design emphasizes dielectric strength, insulation clearances, impulse withstand, controlled gradients, low PD, and robust bushings.
enero 21, 2026 a las 4:31 am en respuesta a: Is the USB-3 modification unit suitable for sulfur polymer? #330782Lucas MartinsMiembroYes – USB-3 is suitable for sulfur polymer / sulfur-modified PMB, provided the unit is ordered/configured with the sulfur dosing (input) assembly and the recipe is run within the correct temperature window for your sulfur/polymer system. GlobeCore’s USB-3 is described as capable of implementing «virtually any bitumen modification process» using a wide range of modifiers and additives, and their configurator explicitly lists a Sulfur input assembly as an available option. Capacity depends on the USB-3 version, but typical industrial configurations are in the 8-12 m³/h range (and higher on other variants), while sulfur addition is treated as an additive stream inside the standard continuous process.
enero 20, 2026 a las 1:45 pm en respuesta a: Why are dry type power transformers used for indoor installations? #330572Lucas MartinsMiembroDry-type transformers avoid liquid dielectrics, reducing fire and environmental risk indoors. They are preferred in buildings, tunnels, offshore modules, and industrial spaces where spill containment, ventilation for oil-filled units, or fire barriers would be problematic. Resin or cast-coil insulation tolerates moisture and contamination better in some environments. They also reduce maintenance related to oil sampling and leaks, making them attractive for commercial and institutional facilities.
enero 20, 2026 a las 12:10 pm en respuesta a: What roles do electrical power distribution transformers play in utility networks? #330544Lucas MartinsMiembroDistribution transformers convert MV feeders to LV service voltages for residential, commercial, and light industrial loads.
enero 20, 2026 a las 9:47 am en respuesta a: What factors are considered in power transformer designing? #330505Lucas MartinsMiembroDesigners consider electrical ratings (kVA, voltage, frequency), cooling class, insulation level, losses, impedance, vector group, short-circuit withstand, thermal limits, materials, and standards. Mechanical constraints, transport dimensions, and service environment also shape the final design.
enero 20, 2026 a las 1:35 am en respuesta a: How is transformer power consumption measured or estimated? #330440Lucas MartinsMiembroConsumption includes no-load losses (core losses measured at rated voltage) and load losses (copper and stray losses measured at rated current). Utilities meter or estimate losses for lifecycle cost analysis.
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