Are you worried about protecting, controlling the high-side electrical system of your substation or power station-HT Switchgear? If your answer is yes, then this article is for you.
Let me tell you about an electronic device which will help you to switch, control and protect your substation or power station. And that is HT Switchgear.
By the end of this article, you will be able to know what are the features, types, and characteristics of HT Switchgear and how to choose the right HT Switchgear for your home or office. So keep in touch with us.
What is a HT Switchgear?
HT stands for High Tension or High Voltages. HT Switchgear is a kind of switching device that helps to connect or disconnect a part of a high voltage power system. The transmission line from 33 kV to 11 kV is called HT side.
As the voltage level increases, the intensity of arcing generated due to switching operations also increases.HT Switchgear is used for protection from Overload, Short Circuit, Earth Fault or any Electrical Fault.
Different Types of HT Switchgear
High voltage switchgear are mainly of two types. Such as-
Gas Insulated Indoor Type (GIS)
Air Insulated Switchgear (AIS)
Gas Insulated Indoor Type (GIS)
SF6 gas is used as an insulating medium in Gas Insulated Switchgear. This means that in GIS systems the contact point of copper busbars is insulated by a three position switch and vacuum circuit breaker by SF6 gas. Gas insulated substations can be of both indoor and outdoor types. And Gas Insulated Switchgear requires 10 times less space than Air Insulated Switchgear. If you are searching for a complete range of GIS for any ratings and applications from 72.5 kV to 1200 kV, then TOS Electric Company is ready to serve you.
Air Insulated Switchgear (AIS)
Air Insulated Switchgear’s devices such as isolators, grounding switches, instruments, transformers, busbars, breakers, etc. are kept isolated at fixed distances in the open air. So Air Insulated Switchgear requires much more space than Gas Insulated Switchgear. And the system installation in Air Insulated Switchgear costs much less and takes much less time. TOS Electric Company provides a complete range of AIS for all ratings and applications upto 1100 kV.
How to Choose the Right HT Switchgear for Your Home or Office
TOS Electric Company is always ready to provide you with electrical equipment like HT Switchgear with the best features made by following international standards and testing methods.
With a wide and complete portfolio of electrical products, TOS Electrical Company is renowned for its expertise in flexible and custom-made solutions.
We always love to give you quality products at a flexible price. You can find a world class solution here as well as hassle free shipment ordering.
Our HT Switchgear is built with high-quality components. Each component can be expanded, and the function is really smooth. So, let’s have a glance at the components that make up our HT Switchgear.
Circuit Breaker
In usual conditions, a circuit breaker is used to connect or disconnect the circuit in the HT Switchgear. It also regulates and protects the electrical circuit.
Excessive power flow in the line can cause accidents to the equipment that protects the circuit breaker. Circuit breakers work much faster than fuses and are more sensitive than fuses.
In HT Switchgear, three main types of circuit breakers are used. These are: air circuit breakers, vacuum circuit breakers, SF6 circuit breakers
Air Circuit Breaker
An air circuit breaker is an electrical device used in electrical circuits ranging from 800 amps to 10 kiloamps. This air circuit breaker is mainly used to provide short circuit protection in low voltage applications below 450 V.
An air circuit breaker uses the pressure in the air as an extinguishing medium based on atmospheric pressure. So a good quality air circuit breaker is needed for the HT Switchgear to run smoothly.
In this context, the air circuit breaker used in TOS Electrical Company’s HT Switchgear is extremely long-lasting, high-performing, and simple to maintain.
Vacuum Circuit Breaker
A vacuum circuit breaker can efficiently suppress an arc caused by vacuum or vacuum. Now the question is, what is an arc? An arc is a sort of electrical discharge that produces a spark when it occurs between two conductive electrodes.
If the transformer’s capacity is greater than 630 KVA, then a vacuum circuit breaker is used. The range of VCB is usually between 1250 A & 630 A.
The vacuum circuit breakers used in TOS Electrical Company’s HT Switchgear are expected to survive more than 20 years. In addition, the arcs produced by this vacuum circuit breaker are relatively less powerful.
SF6 Circuit Breaker
An SF6 Circuit Breaker is used when the voltage range is higher than 1000V. In the arcing chamber of the SF6 Circuit Breaker, there are fixed and moving connections.
In typical conditions, the two connections are linked to one another. A relay or a regulating circuit separates the two connections in the case of a malfunction or the need to unplug the circuit from the power source.
As the arcing chamber is connected to the SF6 gas reservoir, the SF6 gas is extremely electronegative and may rapidly absorb free electrons. TOS Electric Company’s HT Switchgear uses an SF6 Circuit Breaker that can yield extra current.
Capacitor Cabinet
HT switchgear needs to conduct voltage across different parts of the circuit, and this is what the capacitor does. The current is filtered through the capacitor and voltage flows to the important places in the circuit. In addition, the capacitor saves the current for a while and makes the circuit run stronger. The capacitors used in most companies’ HT switchgear explode when damaged. But the HT switchgear made by TOS Electric Company uses very good quality capacitors, so the possibility of damage is zero.
Busbar Cabinet
Busbar is a type of conductive thick rod or sheet made of aluminum or copper. It receives electrical energy from one or more circuits and distributes that energy through various circuits. If the weight is too much or too little according to the size of the busbar, then the busbar is not right, i.e. copper is adulterated. In this case, the size and weight of the busbar used in the HT Switchgear of TOS Electric Company is very close, that is, there is no adulteration in copper. So, our HT switchgear runs very smoothly.
Measuring Cabinet
A measuring cabinet is used to measure the electric energy in HT Switchgear. Isolating switches, fuses, CT, PT, active watt-hour meters, reactive watt-hour meters, relays, and other components are mostly used.
PT Cabinet
PT Cabinet measures voltages and protects each busbar against overvoltages. It does not, however, have a current transformer or a live display. It has a PT voltage transformer, an isolating knife, a fuse, and an arrester, among other things.
Grounding Knife
Grounding knife is also called an earthing switch. It is mainly used for ensuring the safety of personnel during line and equipment maintenance by grounding. It is connected to the high-voltage side of the step-down transformer.
Relay
Relay is another important component of HT Switchgear. It is a type of switching device. The coil inside the reel is magnetized as electricity travels through it, allowing the circuit to be regulated and controlled by the relay’s on/off switch.
Frequently Asked Question (FAQ)
1. Which circuit breaker is used in a high voltage line instead of an Air Circuit Breaker?
= ABCB or Air Blast Circuit Breakers are also used instead of Air Circuit Breaker or ACB in high voltage lines. This circuit breaker has extra advantages of high speed operation and repeated suitability with low maintenance. And it’s specially favored for arc furnaces and motor systems.
2. What is the reason for sectionalizing the busbar?
= Sectionalization of the busbar allows for accurate and normal distribution and interconnection between electrical arrangements. Basically, when the connection is made through an electrical circuit or a management busbar, if there is a fault in any part of the system, then the busbar is sectionalized so that the complete electrical management activities are not stopped.
A Final Word,
So, hopefully you now know HT Switchgear’s components, characteristics and other important information. If you have any more queries regarding this, don’t hesitate to contact us. Come to our shop and pick out your HT Switchgear. So stay tuned with us.
Are you worried about protecting, controlling the high-side electrical system of your substation or power station-HT Switchgear? If your answer is yes, then this article is for you.
Let me tell you about an electronic device which will help you to switch, control and protect your substation or power station. And that is HT Switchgear.
By the end of this article, you will be able to know what are the features, types, and characteristics of HT Switchgear and how to choose the right HT Switchgear for your home or office. So keep in touch with us.
What is a HT Switchgear?
HT stands for High Tension or High Voltages. HT Switchgear is a kind of switching device that helps to connect or disconnect a part of a high voltage power system. The transmission line from 33 kV to 11 kV is called HT side.
As the voltage level increases, the intensity of arcing generated due to switching operations also increases.HT Switchgear is used for protection from Overload, Short Circuit, Earth Fault or any Electrical Fault.
Different Types of HT Switchgear
High voltage switchgear are mainly of two types. Such as-
Gas Insulated Indoor Type (GIS)
SF6 gas is used as an insulating medium in Gas Insulated Switchgear. This means that in GIS systems the contact point of copper busbars is insulated by a three position switch and vacuum circuit breaker by SF6 gas. Gas insulated substations can be of both indoor and outdoor types. And Gas Insulated Switchgear requires 10 times less space than Air Insulated Switchgear. If you are searching for a complete range of GIS for any ratings and applications from 72.5 kV to 1200 kV, then TOS Electric Company is ready to serve you.
Air Insulated Switchgear (AIS)
Air Insulated Switchgear’s devices such as isolators, grounding switches, instruments, transformers, busbars, breakers, etc. are kept isolated at fixed distances in the open air. So Air Insulated Switchgear requires much more space than Gas Insulated Switchgear. And the system installation in Air Insulated Switchgear costs much less and takes much less time. TOS Electric Company provides a complete range of AIS for all ratings and applications upto 1100 kV.
How to Choose the Right HT Switchgear for Your Home or Office
TOS Electric Company is always ready to provide you with electrical equipment like HT Switchgear with the best features made by following international standards and testing methods.
With a wide and complete portfolio of electrical products, TOS Electrical Company is renowned for its expertise in flexible and custom-made solutions.
We always love to give you quality products at a flexible price. You can find a world class solution here as well as hassle free shipment ordering.
Our HT Switchgear is built with high-quality components. Each component can be expanded, and the function is really smooth. So, let’s have a glance at the components that make up our HT Switchgear.
Circuit Breaker
In usual conditions, a circuit breaker is used to connect or disconnect the circuit in the HT Switchgear. It also regulates and protects the electrical circuit.
Excessive power flow in the line can cause accidents to the equipment that protects the circuit breaker. Circuit breakers work much faster than fuses and are more sensitive than fuses.
In HT Switchgear, three main types of circuit breakers are used. These are: air circuit breakers, vacuum circuit breakers, SF6 circuit breakers
Air Circuit Breaker
An air circuit breaker is an electrical device used in electrical circuits ranging from 800 amps to 10 kiloamps. This air circuit breaker is mainly used to provide short circuit protection in low voltage applications below 450 V.
An air circuit breaker uses the pressure in the air as an extinguishing medium based on atmospheric pressure. So a good quality air circuit breaker is needed for the HT Switchgear to run smoothly.
In this context, the air circuit breaker used in TOS Electrical Company’s HT Switchgear is extremely long-lasting, high-performing, and simple to maintain.
Vacuum Circuit Breaker
A vacuum circuit breaker can efficiently suppress an arc caused by vacuum or vacuum. Now the question is, what is an arc? An arc is a sort of electrical discharge that produces a spark when it occurs between two conductive electrodes.
If the transformer’s capacity is greater than 630 KVA, then a vacuum circuit breaker is used. The range of VCB is usually between 1250 A & 630 A.
The vacuum circuit breakers used in TOS Electrical Company’s HT Switchgear are expected to survive more than 20 years. In addition, the arcs produced by this vacuum circuit breaker are relatively less powerful.
SF6 Circuit Breaker
An SF6 Circuit Breaker is used when the voltage range is higher than 1000V. In the arcing chamber of the SF6 Circuit Breaker, there are fixed and moving connections.
In typical conditions, the two connections are linked to one another. A relay or a regulating circuit separates the two connections in the case of a malfunction or the need to unplug the circuit from the power source.
As the arcing chamber is connected to the SF6 gas reservoir, the SF6 gas is extremely electronegative and may rapidly absorb free electrons. TOS Electric Company’s HT Switchgear uses an SF6 Circuit Breaker that can yield extra current.
Capacitor Cabinet
HT switchgear needs to conduct voltage across different parts of the circuit, and this is what the capacitor does. The current is filtered through the capacitor and voltage flows to the important places in the circuit. In addition, the capacitor saves the current for a while and makes the circuit run stronger. The capacitors used in most companies’ HT switchgear explode when damaged. But the HT switchgear made by TOS Electric Company uses very good quality capacitors, so the possibility of damage is zero.
Busbar Cabinet
Busbar is a type of conductive thick rod or sheet made of aluminum or copper. It receives electrical energy from one or more circuits and distributes that energy through various circuits. If the weight is too much or too little according to the size of the busbar, then the busbar is not right, i.e. copper is adulterated. In this case, the size and weight of the busbar used in the HT Switchgear of TOS Electric Company is very close, that is, there is no adulteration in copper. So, our HT switchgear runs very smoothly.
Measuring Cabinet
A measuring cabinet is used to measure the electric energy in HT Switchgear. Isolating switches, fuses, CT, PT, active watt-hour meters, reactive watt-hour meters, relays, and other components are mostly used.
PT Cabinet
PT Cabinet measures voltages and protects each busbar against overvoltages. It does not, however, have a current transformer or a live display. It has a PT voltage transformer, an isolating knife, a fuse, and an arrester, among other things.
Grounding Knife
Grounding knife is also called an earthing switch. It is mainly used for ensuring the safety of personnel during line and equipment maintenance by grounding. It is connected to the high-voltage side of the step-down transformer.
Relay
Relay is another important component of HT Switchgear. It is a type of switching device. The coil inside the reel is magnetized as electricity travels through it, allowing the circuit to be regulated and controlled by the relay’s on/off switch.
Frequently Asked Question (FAQ)
1. Which circuit breaker is used in a high voltage line instead of an Air Circuit Breaker?
= ABCB or Air Blast Circuit Breakers are also used instead of Air Circuit Breaker or ACB in high voltage lines. This circuit breaker has extra advantages of high speed operation and repeated suitability with low maintenance. And it’s specially favored for arc furnaces and motor systems.
2. What is the reason for sectionalizing the busbar?
= Sectionalization of the busbar allows for accurate and normal distribution and interconnection between electrical arrangements. Basically, when the connection is made through an electrical circuit or a management busbar, if there is a fault in any part of the system, then the busbar is sectionalized so that the complete electrical management activities are not stopped.
A Final Word,
So, hopefully you now know HT Switchgear’s components, characteristics and other important information. If you have any more queries regarding this, don’t hesitate to contact us. Come to our shop and pick out your HT Switchgear. So stay tuned with us.
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