Series and Shunt Reactor Difference, Applications, Use


In electrical and electronics circuits, system different types of protection, suppression, Indication, Control systems are used. Using of Reactors(Series or Shunt Reactor) also a method of protecting electrical and electronic circuits. Although Reactors are mostly used in large electrical circuits but in electronics circuits also, reactors are used. According to the type of connection, there are mainly two types of the reactor - series reactor and shunt reactor. In some applications, the combination of series reactor and shunt reactor is used. The series reactor is also known as a line reactor whereas the Shunt Reactor also known as Parallel Reactor.


What is Electrical Reactor? Definition


In simple words, an electrical reactor is nothing but an inductor or inductive or magnetic coil. We know that when an AC supply is applied across an inductive coil, it shows the inductive reactance property. Exactly the same does an electrical reactor. An electrical reactor works with an AC supply only, and it blocks the high-frequency signal and passes the low-frequency signal.

Electrical reactors are designed in such a way that they have very low internal resistance and high inductance property. 



Difference Between Series Reactor and Shunt Reactor


Series Reactor, Shunt Reactor, Use, applications, difference



1. When a reactor is connected in series with an electrical system or circuit then it is called Series Reactor. On the other hand, when a reactor is connected in parallel with an electrical system or circuit then it is called Shunt Reactor.

2. The main function of a Series Reactor is to block the current or limit reactor that's why it is also called the Current limiting Reactor. Generally, the series reactor blocks the high-frequency signals or alternating current. On the other hand, the main function of a Shunt Reactor is to pass the current. Generally, the shunt reactor allows or passes the low-frequency signals or alternating current. A shunt reactor is also known as a current absorber.

3. Series reactors have very low internal resistance which allows to flow the current in normal condition and block the current when required. On the other hand, shunt reactors have comparatively high internal resistance which blocks the current in normal condition and passes the current in an abnormal condition.

4. A series reactor can block the flow of current only it can not do any changes in the power factor but a shunt reactor can improve power factor from leading to unity. A shunt reactor is just opposite to a Shunt Capacitor.



Series Reactor Use and Applications


Now let's discuss the most important question, where series reactors are used and why?

1. Series Reactors are used in electrical power transmission and distribution systems to limit the flow of high current during the abnormal condition.

2. Series Reactors are also used in parallel networks for load-sharing purposes.

3. Series reactors are also used in electrical circuits for impedance balancing purposes.

4. Series Reactors are used for neutral earthing purposes also.

5. Series Reactors are used in some motor starter circuits to limit the high starting current.

6. Series Reactors are used in Alternator Parallel operations to reduce the risk of the high short circuit during the abnormal condition.

7. Series reactors are also used to limit fault current during harmonic and transient conditions.



Shunt Reactor Use and Applications


1. Shunt Reactors are used to suppress the high capacitance effect in transmission and distribution systems.

2. Shunt reactors are used in transmission and distribution systems, to adjust the high transient voltage.

3. Shunt Reactor is used as excessive Reactive Power Absorber or compensator.

4. Just like shunt capacitors, shunt reactors also used in electrical substations for voltage balancing, power factor maintaining, etc.


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Series and Shunt Reactor Difference, Applications, Use Series and Shunt Reactor Difference, Applications, Use Reviewed by Author on 3/02/2021 Rating: 5
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