power transformer Armed men attack Obajana transmission station, destroy power transformers By punchng.com Published On :: Thu, 14 Nov 2024 07:07:46 +0000 Armed men suspected to be bandits, on Tuesday, attacked the site of the ongoing construction of the 330/132/33kV transmission substation in Obajana, Kogi State. The armed men, shooting sporadically, destroyed a 150MVA 330/132/33kV power transformer, causing a significant setback to the government’s efforts to increase power generation. The Transmission Company of Nigeria disclosed the latest Read More Full Article News
power transformer Mastering stability test of power transformer: Differential and Restricted Earth Fault (REF) protection By electrical-engineering-portal.com Published On :: Mon, 25 Sep 2023 05:55:16 +0000 This technical article discusses the essentials of transformer differential protection and restricted earth fault protection schemes, contrasting the two and elaborating on why the latter is necessary. Furthermore, it reveals the outcomes of stability tests performed on a 502 MVA... Read more The post Mastering stability test of power transformer: Differential and Restricted Earth Fault (REF) protection appeared first on EEP - Electrical Engineering Portal. Full Article Premium Content Protection Testing and Commissioning Transformers differential protection differential protection scheme failure fault hv windings injecting fault lv side primary current lv side secondary current lv windings measured primary currents measured secondary currents ref ref protection restricted earth fault protection stability test stable condition transformer differential protection transformer restricted earth fault protection tv windings unit protection scheme unstable condition
power transformer Contract drawings for a power transformer – The checklist you should always follow By electrical-engineering-portal.com Published On :: Mon, 04 Dec 2023 08:39:02 +0000 This technical article provides a collection of the common drawings that are sent by the manufacturer to the client for approval and reference. The goal of these drawings is to verify that the transformers that are going to be manufactured... Read more The post Contract drawings for a power transformer – The checklist you should always follow appeared first on EEP - Electrical Engineering Portal. Full Article Power Substation Premium Content Protection Transformers alarm scheme arrangement drawing bill of materials bushings checklist contract drawings control scheme control selector switches cooler control cubicle diagram plate foundation plan indication circuit diagram junction box marshalling box on-load tap changer overload protection power transformer rtcc panel tap changer control schemes tripping scheme voltage regulating
power transformer An Overview of IEC 60076-10 – Determination Of Sound Levels Of Power Transformers By electrical-engineering-portal.com Published On :: Wed, 14 Aug 2013 04:27:39 +0000 The audible sound radiated by transformers is generated by a combination of magnetostrictive deformation of the core and electromagnetic forces in the windings, tank walls and magnetic shields. Historically, the sound generated by the magnetic field inducing longitudinal vibrations in the... Read more The post An Overview of IEC 60076-10 – Determination Of Sound Levels Of Power Transformers appeared first on EEP - Electrical Engineering Portal. Full Article IEC Standards Transformers electromagnetic forces reactor sound intensity sound power sound pressure transformer vibrations windings
power transformer Field secrets and warnings in power transformer mechanical check and visual inspection By electrical-engineering-portal.com Published On :: Mon, 11 Sep 2023 06:00:32 +0000 Let’s discuss the visual and mechanical inspection procedures for oil-filled power transformers. It’s important, very important to examine a variety of key checkpoints, both external and internal to transformers, all based on the IEC 60076 standard. Each item on the... Read more The post Field secrets and warnings in power transformer mechanical check and visual inspection appeared first on EEP - Electrical Engineering Portal. Full Article Maintenance Premium Content Testing and Commissioning Transformers bolt tightness inspection breather buchholz relay cooling dry air filling grounding points impact recorder mechanical check moisture intrusion nitrogen oil filled transformers paint quality phase marking power transformer pressure gauge prevent overheating shock watch digital fault recorder transformer components transformer nameplate transformer tank visual inspection
power transformer Managing power transformers in service: The most important economic aspects By electrical-engineering-portal.com Published On :: Mon, 16 Sep 2024 07:01:06 +0000 Utilities are under intense pressure to maximize the use of their current transformer asset base in order to keep rates down while yet providing excellent reliability. In order to achieve higher loading during both regular and emergency operations, long-standing loading... Read more The post Managing power transformers in service: The most important economic aspects appeared first on EEP - Electrical Engineering Portal. Full Article Maintenance Premium Content Testing and Commissioning Transformers economic aspects load analysis maintenance expense managing power transformers on-line monitoring power transformers transformer transformer availability transformer condition transformer failure transformer loading transformer maintenance transformer maintenance cost transformer management transformer manager transformer operation transformers
