Electrical Engineering Guides

Power Systems

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 of heavy load, lightening impulses, switching impulses etc. These over voltage stresses may damage insulation o

By Electrical4u 03/26, 2024
Power Systems

Busbar Protection | Busbar Differential Protection Scheme

In early days only conventional over current relays were used for busbar protection . But it is desired that fault in any feeder or transformer connected to the busbar should not disturb busbar system. In viewing of this time setting of busbar protection relays are made lengthy. So when faults occur

By Electrical4u 03/26, 2024
Power Systems

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 are used to drive mechanical devices of all types, so it is very important to protect t

By Electrical4u 03/26, 2024
Power Systems

Annunciation System Alarm Annunciator

In electrical and electronics systems, the word Annunciator means a device which announces the faults or unusual activities coming from the system or process associated with it. What is Alarm Annunciator? It is basically an audio visual warning system, which highlights the fault or mishap which is g

By Electrical4u 03/26, 2024
Power Systems

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 or from a separately driven DC generator . The failure of auxiliary supply or failure of driving motor can also cause

By Electrical4u 03/26, 2024
Power Systems

Motor Protection: Types, Faults and Devices

A motor protection system is a set of devices and methods that protect an electric motor from various faults and damages. An electric motor is a crucial component of many industrial and domestic applications, ranging from small appliances to large machines. Therefore, it is important to ensure the p

By Electrical4u 03/26, 2024
Power Systems

What is an Arc ? | Arc in Circuit Breaker

Before going through details of arc quenching or arc extinction technologies employed in circuit breaker we should know first what is arc actually. What is an Arc? During opening of current carrying contacts in a circuit breaker the medium in between opening contacts become highly ionized through wh

By Electrical4u 03/25, 2024
Power Systems

Electrical Fuse HRC Fuse High Rupturing Capacity

Electrical Fuse In the normal working condition of the electrical network, the current flowing through the network is within the rated limit. If a fault occurs in the network mainly phase to phase short circuit fault or phase to ground fault, the network current crosses the rated limits. This high c

By Electrical4u 03/25, 2024
Power Systems

Working Principle of Earth Leakage Circuit Breaker ELCB | Voltage and Current ELCB | RCCB

Earth Leakage Circuit Breaker or ELCB An Earth-leakage circuit breaker (ELCB) is a safety device used in electrical installations (both residential and commercial) with high Earth impedance to prevent electric shocks. It detects small stray voltages on the metal enclosures of electrical equipment, a

By Electrical4u 03/25, 2024
Power Systems

Miniature Circuit Breaker [ MCB ]: What is it?

What is MCB? A Miniature Circuit Breaker ( MCB ) is an automatically operated electrical switch used to protect low voltage electrical circuits from damage caused by excess current from an overload or short circuit. MCBs are typically rated up to a current up to 125 A, do not have adjustable trip ch

By Electrical4u 03/25, 2024
Power Systems

Dielectric Gases

Dielectric materials are basically basic and pure electrical insulators . By applying a sensible electrical field, the dielectric gases can be polarised. Vacuum, Solids, Liquids and Gases can be a dielectric material. A dielectric gas is also called as an insulating gas. It is a dielectric material

By Electrical4u 03/25, 2024
Power Systems

Remote Control Circuit Breaker Using a Microcontroller

We often come across a situation where we want to switch on the electrical load by pressing some buttons on a computer program. Consider an example, where you are sitting in a power plant and you want to switch on a circuit breaker remotely. Controlling circuit breakers from a remote location can be

By Electrical4u 03/25, 2024

Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

All

Overvoltage Protection

Busbar Protection | Busbar Differential Protection Scheme

Motor Protection Circuit Breaker or MPCB

Annunciation System Alarm Annunciator

Loss of Field or Excitation Protection of Alternator or Generator

Motor Protection: Types, Faults and Devices

What is an Arc ? | Arc in Circuit Breaker

Electrical Fuse HRC Fuse High Rupturing Capacity

Working Principle of Earth Leakage Circuit Breaker ELCB | Voltage and Current ELCB | RCCB

Miniature Circuit Breaker [ MCB ]: What is it?

Dielectric Gases

Remote Control Circuit Breaker Using a Microcontroller

Recommended Topics