Protection System in Power System
This portion of our website covers almost everything related to protection system in power system including standard lead and device numbers, mode of connections at terminal strips, color codes in…
Stator Earth Fault Protection of Alternator
This is to be noted that, the star point or neutral point of stator winding of an alternator is grounded through an impedance to limit the ground fault current. Reduced…
Small and Large Motor Protection Scheme
The electric motor is most essential drive in modern era of industrialization. From fractional hp AC motor used for different home appliances to giant synchronous motor and induction motor of…
Rotor Earth Fault Protection of Alternator or Generator
The rotor of an alternator is wound by field winding. Any single earth fault occurring on the field winding or in the exciter circuit is not a big problem for…
Overvoltage Protection
There are always a chance of suffering an electrical power system from abnormal over voltages. These abnormal over voltages may be caused due to various reason such as, sudden interruption…
Motor Thermal Overload Protection
For understanding motor thermal overload protection in induction motor we can discuss the operating principle of three phase induction motor. There is one cylindrical stator and a three phase winding…
Motor Protection Circuit Breaker or MPCB
Motor protection circuit breakers are a specialized type of electrical protection device that is designed specifically for electric motors, like their name implies. Electric motors have plenty of applications and…
Loss of Field or Excitation Protection of Alternator or Generator
Loss of field or excitation can be caused in the generator due to excitation failure. In larger sized generator, energy for excitation is often taken from a separate auxiliary source…
Electrical Fault Calculation | Positive Negative Zero Sequence Impedance
Before applying proper electrical protection system, it is necessary to have through knowledge of the conditions of electrical power system during faults. The knowledge of electrical fault condition is required…
Electrical Fault Calculation | Positive Negative Zero Sequence Impedance
[vc_row][vc_column][vc_column_text]Before applying proper electrical protection system, it is necessary to have through knowledge of the conditions of electrical power system during faults. The knowledge of electrical fault condition is required…