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rost
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rostSuperadministrador
Ще якась інформація є?
rostSuperadministradorПоясни більш зрозуміло і докладніше, дякую
rostSuperadministradorЩо є у GlobeCore для цього?
rostSuperadministradorА можна відповідати українською мовою?
rostSuperadministradorНічого не зрозумів, про що ви?
enero 23, 2026 a las 7:13 am en respuesta a: What causes transformer no load power consumption? #331411rostSuperadministradorNo-load consumption is mainly due to core losses: hysteresis and eddy currents in the magnetic core material. Even with no secondary load, the primary must draw magnetizing current to maintain flux, and this causes continuous heating. Hysteresis losses result from domain realignment each cycle, while eddy current losses occur as induced currents circulate in laminations. No-load losses are nearly constant with voltage and independent of load, which is why utilities carefully specify low core-loss designs for high-efficiency operation.
enero 22, 2026 a las 6:32 pm en respuesta a: What specs define a power transformer for utility procurement? #331315rostSuperadministradorKey specs include kVA/MVA rating, HV/MV taps, impedance, vector group, BIL, cooling class, losses, OLTC, bushings, accessories, and standards compliance.
enero 22, 2026 a las 6:17 pm en respuesta a: What are the different parts of a power transformer? #331313rostSuperadministradorKey parts include core, windings, insulation, tank, bushings, tap changer, cooling system, protection sensors, and oil or solid dielectric medium.
enero 22, 2026 a las 6:01 pm en respuesta a: What operational issues affect power transformers? #331311rostSuperadministradorKey issues include oil degradation, insulation aging, partial discharge, overheating, OLTC wear, bushing failures, moisture ingress, corrosion, vibration, and harmonics. These reduce dielectric strength, increase losses, and accelerate thermal aging.
rostSuperadministradorIts purpose is to transfer electrical energy between voltage levels, isolate circuits, control voltage via taps, and enable efficient power transmission and distribution.
enero 22, 2026 a las 5:29 pm en respuesta a: What does a power transformer coil winding machine do in manufacturing? #331307rostSuperadministradorIt winds copper or aluminum conductors onto formers or cores with precise tension, layering, insulation placement, and tap-lead routing, enabling consistent electrical characteristics and mechanical strength.
enero 22, 2026 a las 5:13 pm en respuesta a: What does impulse testing of a power transformer verify? #331305rostSuperadministradorIt verifies the ability of winding insulation to withstand transient overvoltages produced by lightning or switching events. The test checks for partial discharge, insulation puncture, or turn-to-turn breakdown and confirms mechanical integrity under high transient stress.
enero 22, 2026 a las 4:57 pm en respuesta a: What does a power transformer short circuit test verify? #331303rostSuperadministradorIt verifies impedance, copper losses, and thermal/mechanical withstand under fault-level currents, ensuring compliance with standards.
enero 22, 2026 a las 4:41 pm en respuesta a: What does a test of a power transformer verify? #331301rostSuperadministradorIt verifies electrical, mechanical, and thermal performance against specified ratings, standards, and utility acceptance criteria.
enero 22, 2026 a las 4:26 pm en respuesta a: What does impulse testing verify in power transformers? #331299rostSuperadministradorIt verifies dielectric robustness and ensures that insulation systems meet utility impulse withstand specifications before commissioning.
enero 22, 2026 a las 4:10 pm en respuesta a: What does Hammond Power Solutions transformer wiring typically include? #331297rostSuperadministradorIt typically includes primary and secondary winding terminations, taps, grounding points, and auxiliary control wiring for fused disconnects or temperature monitors. HPS products may also provide multi-tap input arrangements for industrial voltages and configurable secondary outputs for machinery and power conditioning equipment.
enero 22, 2026 a las 3:54 pm en respuesta a: What does power transformer clipart typically illustrate? #331295rostSuperadministradorIt typically illustrates external features-tank, radiators, bushings, and actuators-used in educational, presentation, or documentation contexts.
enero 22, 2026 a las 3:38 pm en respuesta a: What does a power transformer testing and commissioning PDF typically cover? #331293rostSuperadministradorIt typically covers factory acceptance tests, site acceptance tests, insulation tests, ratio and polarity checks, winding resistance, tan-delta, DGA procedures, oil handling, cooling system checks, OLTC testing, grounding, protection wiring, and energization steps. Commissioning sections outline pre-energization criteria, safety controls, documentation, and handover protocols for utility operation.
enero 22, 2026 a las 3:22 pm en respuesta a: What does a power transformer look like in a substation? #331291rostSuperadministradorIt typically appears as a large tank with radiators, bushings, arresters, conservator, and OLTC cabinet, connected to busbars or overhead lines.
enero 22, 2026 a las 3:06 pm en respuesta a: What is the function of a power transformer in a substation? #331289rostSuperadministradorIt steps voltages between transmission and distribution levels, isolates circuits, controls voltage via tap changers and supports fault current management.
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