Category: Electrical Breakers Articles


Electrical Engineering Articles



What is Polyphase? Tell the benefits of Polyphase

Electrical Breakers Articles 

Polyphase: More than one meaning 2 phase, 3 phase, and 6 phase is called polyphase Single Phase: The alternator producing a phase supply consists of a vending. In this case, the value of voltage and current does not change 2 Phase: The alternator producing two-phase supply consists of two vending. It is facing both ways in such a way that the phase difference between them is 90 degrees. Now if the value of the voltage between phase and neutral is 200 v, then two The phase voltage will be 200…

Voltage Regulation Of Synchronous Machines [Alternator] By Direct Loading Test

Electrical Breakers Articles 

Today in this post we are going to learn what is Voltage regulation of synchronous machine and different methods to calculate Voltage regulation of synchronous machine. The definition of Voltage regulation of a synchronous machine: Voltage Regulation of synchronous machine is defined as the difference between the terminal voltage at no load and terminal voltage at full load and excitation, speed must remain same.Voltage Regulation of synchronous machine is generally calculated in percentage of full load terminal voltage. Objectives for calculating Voltage regulation of a synchronous machine: 1. Parallel operation of alternators is affected…

Direct Online Starter Or DOL Starter

Electrical Breakers Articles 

  In this post, we are going to learn about Direct Online Starter or DOL starter. Why We Use Starter? A starter is generally used to limit the high starting currents. An induction motor has high starting currents which may cause the winding’s to damage. In order to prevent this, we use starters while starting an induction motor. The direct online starter is one of the simplest motor starters which is used for starting the induction motor. This starter is generally used for starting of cage type induction motors. Note: Starter action will be only at…

Current Chopping Phenomenon Circuit Breakers

Electrical Breakers Articles Electronics Engineering Articles 

What is Current Chopping? While interrupting highly inductive current, like the no-load current of the transformer, the rapid deionization of contact space and blast effect may cause current interruption before its natural zero. Such an interruption of current before its natural zero is termed as “current chopping”.This phenomenon is more pronounced in case of air-blast circuit breakers which exerts the same deionizing force for all currents within its short-circuit capacity. Even though the instantaneous value of current being interrupted may be less than the normal current rating of the breaker, it…