autotransformer

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Related to autotransformers: Variac

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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The supplier must supply 2 (two) new 300 mva autotransformers and install them and perform all related work.
Filters with autotransformers and active-reactive cycle that is plugged on two three-phase voltage.
Instead of the traditional means of reduced-voltage starting using autotransformers, reactors, or resistors, the ASTAT XT Soft Starter is a reduced-voltage starter that uses advanced digital technology to protect and control motors.
Contract award notice: 003/2016 Supply of 22/11kV Distribution Autotransformers for Kolossi and Yermasogia 132kV S/S.
Lot I: Involves engineering, design, fabrication, factory testing, site delivery, loading, unloading, civil works, erection, testing and commissioning, training, insurance till provisional acceptance and warranty of Suez Gulf 500/220/22 kV GIS Substation and three complete fire fighting systems for the transformers and the shunt reactors including civil works and erection of (a) three single phase autotransformers 500/220/22 kV, of 167 MVA capacity each plus one spare phase and 22 KVAIS bus duct that are purchased separately by package B, (b) six single phase 500 kV shunt reactors, 55 MVAR each, plus one spare phase supplied by package A of lot II, (c) two three phase power transformers 220/22/kV, of 75 MVA capacity each purchased separately by EETC.
Technipower products include autotransformers sold under the Variac name, and customized power supplies.
Contract Awarded for Supply of four 500 kV, 250 MVA three-phase autotransformers.
Job involves the supply of three single phase 167 MVA each plus one spare 500/ 220/22 KV Autotransformers for Suez Gulf 500 KV GIS S/S (Package B).
The project will also see ABB support REE in its efforts to upgrade the islands transmission grid with seven single-phase, 200 MVA, 420 kV autotransformers.
Under this project, ABB will be responsible to design, deliver and commission the new circuit breakers with polymeric insulators to strengthen safety and robustness, and will even design, manufacture and deliver 450 MVA autotransformers and 735 kV shunt reactors.
It will also design, manufacture and deliver 450 megavolt-ampere (MVA) autotransformers and 735 kV shunt reactors.