IEEE C57.16-2011 pdf download IEEE Standard for Requirements, Terminology, and Test Code for Dry-Type Air-Core Series-Connected Reactors
3. Definitions
For the purposes of this document, the following terms and definitions apply. The IEEE StandardsDictionary: Glossary ofTerms & Definitions” should be referenced for terms not defined in this clause.
3.1 Types of dry-type air-core series reactors
air-core reactor: A reactor that does not include a magnetic core or magnetic shield.
indoor reactor: A reactor that, because of its construction, shall be protected from the weather.
outdoor reactor: A reactor of weatherproof construction.
three-phase dry-type air-core reactor: A reactor made up of single-phase devices that are stacked andmagnetically coupled. Depending on the application, the self-inductance may be modified to compensatefor mutual coupling effects.
3.2 Series reactor applications
bus tie reactor: A current-limiting reactor for connection between two different buses or two sections ofthe same bus for the purpose of limiting and localizing the disturbance due to a fault in either bus.
current-limiting reactor: A reactor connected in series with the phase conductors for limiting the currentthat can flow in a circuit under short-circuit conditions or under other operating conditions, such ascapacitor switching, motor starting, synchronizing, arc stabilization, etc.
duplex current-limiting reactor: A center-tapped reactor used in two circuit branches fed by a commoncircuit and wound so that negative coupling is employed under normal operating conditions to reducecircuit impedance and positive coupling is employed under fault conditions to increase circuit impedance.
eeder reactor: A current-limiting reactor connected in series with a feeder circuit, for the purpose oflimiting and localizing the disturbance due to faults on the feeder.
high-voltage power flow control reactor: A transmission class reactor connected in series with thetransmission system in order to optimize power flow by altering the line reactance.
insertion reactor: A reactor that is connected momentarily across the open contacts of a circuit-interrupting device for synchronizing and/or switching transient suppression purposes.
oad balancing reactor: A series-connected reactor used to correct the division of current betweenparallel-connected transformers or circuits that have unequal impedance voltages under steady-state andshort-circuit conditions.
motor starting reactor: A current-limiting reactor used to limit the starting current of a machine.
NOTE-Various technical publications are available that cover the application of series reactors and can be consultedto provide more background information, application considerations, case studies, etc.