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Eric King
Eric King
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Eric KingMember
Generally refers to manufacturer data sheets, specifications, manuals, test guides, and procurement standards compiled in PDF for engineering use.
January 27, 2026 at 5:53 am in reply to: What are the methods of neutral earthing in power transformers? #332187Eric KingMemberCommon neutral earthing methods include solid grounding, resistance grounding (low/high resistance), reactance grounding, and Petersen coil grounding. Selection depends on system voltage level, fault current limitation requirements, arc suppression needs, and protection philosophy. Proper earthing improves fault detection, limits overvoltages, supports selective tripping, and enhances personnel safety. Transmission networks often use reactance or resistance grounding, while distribution systems may use solid grounding for simpler protection.
January 27, 2026 at 4:36 am in reply to: what type of transformer is used in power stations? #332177Eric KingMemberIn power stations, generator step up transformers and unit auxiliary transformers are most common. Generator step up transformers are large three phase power transformers that raise generator voltage to high transmission levels such as 132 kV, 220 kV or higher. They are designed for high efficiency, strong short circuit withstand and often include on load tap changers. Unit auxiliary or station service transformers step down generator or transmission voltage to medium and low voltages for plant loads such as pumps, fans, controls and auxiliary equipment.
Eric KingMember?=Pout/Pin×100%, using measured load losses, no-load losses, and temperature corrections.
January 25, 2026 at 5:34 am in reply to: What is the function of the neutral bushing of a power transformer? #331799Eric KingMemberThe neutral bushing provides an insulated terminal for the neutral point of wye-connected windings. It allows grounding, zero-sequence current flow measurement, differential protection reference, and connection of surge arresters or grounding resistors without compromising tank insulation integrity.
January 23, 2026 at 6:26 am in reply to: What does power transformer monitoring detect in substation assets? #331405Eric KingMemberMonitoring detects thermal stress, insulation degradation, oil quality changes, partial discharge, tap changer wear, and overloads. Data supports predictive maintenance and digital asset management.
Eric KingMemberGE power transformers are deployed in transmission and sub-transmission substations, HVDC converter stations, industrial campuses, and renewable integration points.
January 20, 2026 at 7:33 pm in reply to: What procedures are used to test a power transformer? #330654Eric KingMemberField and factory tests confirm insulation, ratio, impedance, losses, PD, bushings, and tap changer performance.
January 20, 2026 at 6:30 pm in reply to: How are Hyundai power transformers factory-tested and commissioned before integration into substation service cycles? #330640Eric KingMemberFactory testing follows IEC/IEEE standards and includes routine tests (ratio, losses, resistance, impedance), insulation withstand tests, and sometimes temperature rise and PD tests. Commissioning on site includes oil sampling, grounding checks, OLTC verification, relay settings, SCADA integration, and thermal scanning before energization.
January 20, 2026 at 5:27 pm in reply to: What principles are used in electrical power transformer design? #330624Eric KingMemberElectromagnetic induction, low-loss core design, thermal management, dielectric coordination, and mechanical short-circuit withstand drive design.
Eric KingMemberCSE power transformers are used in industrial automation, commercial buildings, small utilities, and OEM equipment markets that require compact distribution and control transformers. Typical applications include panel boards, machinery feeds, HVAC systems, and local distribution within plants. Customers look for standardized ratings, global certifications, and reliable delivery for new builds, retrofits, and replacement of aging low-voltage or medium-voltage equipment.
January 20, 2026 at 2:55 am in reply to: What applications require a Cooper power transformer? #330450Eric KingMemberCooper (Eaton) transformers are used in distribution grids, pad-mount installations, and industrial facilities requiring reliable medium-voltage step-down.
January 19, 2026 at 2:14 pm in reply to: What defines an HV power transformer for transmission systems? #330354Eric KingMemberAn HV power transformer operates at high transmission voltages (typically 110 kV and above) and high MVA ratings. It must meet stringent insulation requirements, withstand large short-circuit forces, and maintain low losses. HV transformers often use advanced cooling, sophisticated tap changers, and bushings designed for harsh outdoor or substation environments. They are key elements at interconnection, step-up, and step-down points in the transmission network, directly influencing system reliability and stability.
January 18, 2026 at 8:28 pm in reply to: Which industries does L D Power Transformers Pvt Ltd serve? #330244Eric KingMemberA company such as L D Power Transformers Pvt Ltd generally serves utilities, EPC contractors, and industrial customers requiring MV distribution and substation transformers. Typical sectors include manufacturing, metals, cement, chemicals, rail, commercial real estate, and renewables. Products often range from distribution class up to medium-power substation units, with services including design adaptation to local grid codes, testing, site erection supervision, and periodic maintenance support for long-term reliability.
November 11, 2025 at 8:35 am in reply to: Looking for a quotation for a transformer oil purifier including spare parts, delivered to Chittagong port. Technical specification file is attached. #327488Eric KingMemberThe transformer oil purifier will be configured according to the attached technical specification. It includes degassing, heating, and filtration modules. Quotation will include spare parts, certificates, and test report.
November 10, 2025 at 5:12 am in reply to: Interested in the TOR-80 device, previously used a similar model, and would like to know its development date and price for demonstration purposes. #327366Eric KingMemberThe TOR-80 breakdown voltage tester is a modern IEC 60156-compliant device measuring up to 80 kV. It’s compact, reliable, and suitable for laboratory or field testing. Pricing and demo unit availability will be sent.
November 8, 2025 at 11:48 pm in reply to: Inquiry for transformer oil filtration equipment and a complete product price list. #327254Eric KingMemberGlobeCore manufactures oil filtration units from 600 to 12,000 L/h capacity. We will provide product descriptions, specifications, and pricing for the available CMM-series models.
November 8, 2025 at 3:17 am in reply to: Inquiry for Transformer Oil Regeneration System – Globecore #327176Eric KingMemberGlobeCore regeneration systems restore dielectric strength and color of aged oil. Available capacities range from 1 to 24 m³/h. A formal offer will be prepared upon request.
November 7, 2025 at 8:58 pm in reply to: Kindly quote us with your best price this item CMM-4.0LT TRANSFORMER OIL PURIFICATION UNIT. The end user in Egypt. #327152Eric KingMemberThank you for your inquiry. The CMM-4.0LT transformer oil purification unit has a capacity of 4 m³/h. It removes moisture, gases, and solid impurities under vacuum. We will send our best quotation including shipping terms to Egypt.
November 7, 2025 at 12:31 pm in reply to: Offer Request – Dissipation factor device – for mineral transformer oil analysis #327115Eric KingMemberGlobeCore offers laboratory equipment for transformer oil analysis including dissipation factor (tan delta) testing devices. We will send a quotation and technical datasheet upon request.
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