What is Buchholz Relay? Basically Buchholz relay is used to detect internal faults in oil filled transformers. And that oil is used as insulation for the transformer body. This relay works on the principle of gas detection. and is also known as a safety device used in oil-filled transformers. When internal faults occur inside, the current goes up to a very high abnormal range. This high current automatically increases the operating temperature inside. As the oil is filled in, the excess heat generated causes it to evaporate. As it begins to change to gaseous form, it rises to the oil reservoir. A Buchholz relay is placed between the protector and the transformer tank (body). It detects this gas and immediately trips the circuit. This means the transformer is closed for operation, thereby avoiding any untoward incident.

Difference between permittivity and permeability Permeability Permeability is related to magnetic field. Permittivity The permittivity is related to the electric field. Permeability Permeability is a measure of the application or allowance for a magnetic field Permittivity Permittivity is a measure of resistance to an electric field. Permeability Permittivity is the electric displacement/intensity of the electric field. Permittivity Permeability is a measure of the magnetic induction/intensity of a magnetic field. Permeability Permeability is denoted by the Greek letter μ. Permittivity Permittivity is denoted by the Greek alphabet ϵ. Permeability The SI unit of permeability is henry/meter. Permittivity The SI unit of permittivity is farad/meter.

What is Permeability? Permeability is basically related to the magnetic field and is denoted by μ. and is measured by the magnitude of the magnetic induction or intensity of the magnetic field. It may vary depending on the type of material used, the strength of the magnetic field, the environmental characteristics of temperature and humidity etc.

What is permittivity? Basically permittivity is a property related to the electric field of the media. Suppose there is a medium between two conductors. Every medium contains atoms of electrons and neutrons. They are unbalanced or unbalanced which means placed anywhere in the media without any electrical interference. When an electric field is applied to a conductor, the atoms polarize themselves in the correct direction and this movement through them creates their own electric field, which opposes the external electric field applied to the conductor. And they start moving away from it. This opposition is known as permission. It measures the resistance offered against the formation of an electric field. If they are properly aligned and moving away from the electric field, it means that the medium has better permittivity. It is denoted by the Greek alphabet ϵ. This is represented as the electric displacement/intensity of the electric field. It may vary depending on the type of material

Difference between solenoid valve and motorized valve Solenoid valve Solenoid valve works on electromagnetism. Motorized valve A motorized valve operates on an electric motor. Solenoid valve A solenoid valve is a digital output. Motorized valve A motorized valve can have a digital or analog output. Solenoid valve The solenoid valve magnetizes and operates quickly in response to the current, the response is very fast. But, this rapid control does not provide easy passage of fluid. On the contrary. Motorized valve A motorized valve moves very slowly in response to current. Response is slow, but fluid control is accurate and precise. Solenoid valve Solenoid valves are not suitable for high-pressure media. Since the valve opens and closes quickly (usually within a second), the resulting high pressure can damage the valve or damage the pipeline after prolonged use. Motorized valve A motorized valve on the other hand is suitable for any pressure media as it will accurately pass or block the

What is a motorized valve? Basically motorized valves work on the principle of motor movement. And an electric motor is mounted on the valve and geared to the valve stem so that the valve is open or closed when the motor is running. As the motor is used, it is very much driven by the power supply. And the motor operation is very slow and controlled. When you turn on the motor valve via an external voltage supply, it opens the throttle in a ramp-up slow way. And you close the motor valve, it closes the throttle in a ramp-down slow way.

What is a solenoid valve? Solenoid valve basically works on the principle of electromagnetism. It consists of a wire coil which acts like an electromagnet. This coil controls the movement of the mechanical plunger, which ultimately controls the flow of fluid through it. Normally when current is passed through a magnetic coil, a strong electromagnetic field is created. The principle used in this valve When the coil is energized by an external supply voltage, as it is magnetized, an electromagnetic field is created. This field attracts or repels the movement of the plunger, as it is very strong. When energized, the plunger opens the fluid barrier and allows the fluid to escape. When the coil is de-energized, the plunger again closes the opening as the thrust is removed and blocks the passage of fluid. Thus, it can be referred to as digital output

What is air circuit breaker? Basically Air Circuit Breaker is also known as ACB and circuit breakers are all about extinguishing high-tripping currents or arc generated during power off condition. When the fixed and moving contacts in a circuit breaker are separated from each other during trip or off condition, a large amount of arc is generated. Hence, when air is used to extinguish the arc, it is known as an air circuit breaker. Air circuit breakers also use compressed air to blow out the arc, or alternatively, the contacts are rapidly rotated in a small sealed chamber to allow the displaced air to escape, thus blowing the arc. But, it must be known that the air used is operating at normal atmospheric pressure.

What is circuit breaker? Basically circuit breaker is an essential part of electrical circuit. And it is a device which is used as a protective switch for passing electric current with checking of tripping conditions. Usually the circuit breaker detects a trip condition, the breaker opens its contact and separates the input as well as the output voltage from each other contact. So, the basic function of a circuit breaker is to interrupt the current flow once a fault is detected. It remains open until the user resets the trip.

Types of Relays Used in Air Circuit Breaker (ACB) Basically internal protection and tripping applications, relays are used internally in air circuit breakers to make it more efficient in operation. And generally three types of relays are used in air circuit breaker. shunt coil relay Under Voltage (UV) Relay closing relay Shunt Coil Relay Basically this relay can also be called as power relay for air circuit breaker. Shunt coil relay is an automatically controlled relay, which can be operated remotely to open or close a circuit breaker. Just like a PLC operates a relay, this shunt coil relay can also be operated (on or off) by it. The operation of this relay directly opens or closes the circuit breaker. Under Voltage (UV) Relay Basically this relay is used to detect under voltage in the incoming power supply. Overvoltage is a simple natural problem that the circuit breaker will detect and trip the path. When the incoming voltage is low and usually less than 380 V, the load connected in

What is the working principle of transformer bushing?  Working principle of transformer bushing  Basically a bushing consists of several components. But we will take a general look at the main working principle. It mainly consists of an insulated body, into which the conductor passes. The insulation is usually made of porcelain or capacitance-grade material because it increases the dielectric strength. There is a space between the insulation body and the conductor. This space is filled with electrical-grade mineral oil, which has excellent insulation properties. It prevents direct contact between insulator and conductor. Porcelain is used because it handles a lot of electrical stress. Basically the same theory goes with capacitance-graded materials. Because high voltage stress can break low quality insulation very easily, it is important to use this type of material. Also, they have excellent mechanical strength, which increases the life of the bushing. Oil is properly filled in propor

What is Transformer and Transformer Bushing? What is a transformer?  Basically a transformer is a device which is used to step up or step down the voltage as required. Transformers are required in power transmission and generation stages, with high voltages. Since the transformer works at very high voltage, it is also necessary to take care that it works properly without any leakage or damage. And the transformer has one component that helps it to function properly, that component is the bushing. And without bushings, it is not possible to operate the transformer in any high-voltage condition and that generally in KV. What is Transformer Bushing?  A bushing is basically an electrical insulator that allows the safe passage of electrical conductor current. It is similar to any insulator around the conductor, which helps prevent any untoward incident from occurring. A transformer has two windings - primary and secondary (HV and LV). It makes connections with external wires to conduct elec

What is Oil Circuit Breaker?  Basically an oil circuit breaker is a type of high-voltage circuit breaker. When oil is used to extinguish the arc, it is known as an oil circuit breaker. In this type of circuit breaker, oil is used, but mineral oil is preferable. It performs better in insulating properties than air. The rotating contact and the fixed contact are immersed in insulating oil. When the arc forms, the oil vaporizes and decomposes into hydrogen gas. It eventually forms a hydrogen bubble around the bracket. This highly compressed gas bubble prevents the arc from striking again after the current reaches the zero crossing of the arc cycle.

What is SF6 Circuit Breaker?  SF6 circuit breaker is basically known as sulfur hexafluoride circuit breaker and is a type of medium voltage circuit breaker. When sulfur hexafluoride gas is used to extinguish the arc, it is known as SF6 circuit breaker. This gas is known to extinguish the arc rapidly, as it has a very high dielectric strength and acts as an insulating medium. A large amount of arcing occurs when the fixed and moving contacts move away from each other during a trip or off condition. In SF6 circuit breakers, since the gas enclosure is arcing, the dielectric strength of the gas increases during arc formation. This automatically reduces or cancels the high current generated. SF6 circuit breakers have excellent insulating properties and high electro-negativity. It is used at voltages from 33KV to 800KV.

What is VCB?  VCB is known as vacuum circuit breaker. And vacuum circuit breaker is a type of medium voltage circuit breaker. Circuit breakers are all about extinguishing high-tripping currents or arcs generated in power-off conditions. So, when vacuum is used to extinguish the arc, it is known as vacuum circuit breaker. VCB is used at voltage of 11KV to 33KV. A large amount of arcing occurs when the stationary and moving contacts move away from each other during a trip or off condition. In this circuit breaker, since arcing occurs in a vacuum enclosure, the dielectric strength of the vacuum increases during arcing. In this circuit breaker, since arcing occurs in a vacuum enclosure, the dielectric strength of the vacuum increases during arcing. This automatically reduces or cancels the high current generated. It has a dielectric recovery character, excellent interruption and can interrupt the high-frequency current caused by arc instability, which is superimposed on the line frequency