autotransformer


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autotransformer,

n a transformer with a single winding, having a large number of connections, or taps. Used to deliver a precise voltage to the high-tension primary circuit.

autotransformer

a supplementary transformer with insulated primary and secondary windings on one core in a radiographical unit. It corrects fluctuations in the mains input voltage.
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In this paper, a 24-pulse ac-dc converter is proposed employing a novel zigzag autotransformer as shown in Fig.
1 Design of Proposed Autotransformer for 30-Pulse AC-DC Converter
Our task was to design the device, which can easily lower input AC RMS voltage, while high current passes through it, without using isolation or autotransformer.
This autotransformer transmits the high voltage of 330 kV AC to 110/10 kV AC and has three windings in any of three phases: one primary and two secondary windings.
The device increases or decreases the active power supplied to the lamps of a ballasted lighting system - without abrupt voltage changes - using definitive, multi-staging of selected tap points provided on a toroidal autotransformer controlled by digital switching.
Contract notice: Supply of autotransformer 200 000 kva, 230/121 / 10.
Request of offers from international eligible bidders for the supply of 1 x 375 MVA, 500/ 220/ 11 kV autotransformer required for Samallout 500/ 220/ 11 kV substation extension (Package B) under funding from EIB - European Investment Bank.
The device increases or decreases the active power supplied to the lamps of a ballasted lighting system -- without abrupt voltage changes -- using definitive, multi-staging of selected tap points provided on a toroidal autotransformer controlled by digital switching.
Tenders are invited for Autotransformer Remanufacture
Tenders are invited for Repairing of starting autotransformer (sl no-y4696601).
Petersburg, the company manufactured and delivered to the customer two autotransformer 110 kV and capacity of 125 MW for the SS "Ermak" and two transformers of 110 kV and 63 MW of power for the SS "Koptevo".
Also, repair of lifting mechanisms, compressed air systems, HPP fire extinguishing systems, replacement of power autotransformers No.