A current limiting reactor is used when the prospective short-circuit current in a distribution or transmission system is calculated to exceed the interrupting rating of the associated switchgear. The inductive reactance is chosen to be low enough for an acceptable voltage drop during normal operation, but high enough to restrict a short ...

2021年5月3日 · In an AC circuit, reactance is the opposition to current flow. A reactor, also known as a line reactor, is a coil wired in series between two points in a power system to minimize inrush current, voltage notching effects, and voltage spikes.

2019年6月6日 · There are generally two types of line reactors used with VFDs; AC & DC. When a reactor is installed between the power system and the VFD, it is known as an AC line reactor. When a DC reactor is inserted into the DC link of a drive, it is known as a DC link reactor.

2012年2月24日 · What is a Line Reactor? A line reactor, also called an electrical reactor or choke, is a coil used with variable frequency drive (VFD). As current flows through the coil, it creates a magnetic field that slows the rise of current, reducing harmonics and protecting the drive from power surges…

When an AC reactor is placed between the power system and the drive, it is referred to as an AC line reactor. When a DC reactor is inserted into the DC link of a variable frequency drive, it is known as a DC link reactor. Both AC and DC reactors limit harmonic currents.

Going back to basic AC circuit theory, an inductor has the characteristic of storing energy in the magnetic field and is reluctant to a change in current. The main property of a reactor is its inductance and is measured in henrys, millihenrys or microhenrys.

DC line reactor is used to limit AC component on DC to a specified value. Filter reactor, also called DC smoothing reactor, is used at DC side of converter. The current in line reactor is direct current with AC component. It is used to limit the AC component on …