HT Switchgear is an electronic device that assists you to switch, control and protect your substation or power station. This article is going to share with you the features, characteristics, and types of HT Switchgear. You will also be able to know how to choose the right HT Switchgear for your home. If you are thinking about how to switch, control and protect your substation or power station you should just go through this article without getting worried. So, let’s come to the main topic.
A Short Definition Of HT Switchgear
HT signifies High Tension or High Voltages. You should know that HT Switchgear is nothing but a switching device. If you want to connect or disconnect a part of a high voltage power system in your home you may make use of HT Switchgear without any tension. HT side means the transmission line from 33 KV to 11 KV.
When the voltage level upswings the intensity of arcing developed for switching operations also upswings. To protect from overload, short circuit, earth fault, or any electrical fault we use HT Switchgear.
How Many Types Of GT Switchgear Are There
There are two types of High Voltage Switchgear. They are:
- Gas Insulated Indoor Type Switchgear (GIS)
- Air Insulated Switchgear (AIS)
Gas Insulated Indoor Type Switchgear
In Gas Insulated Switchgear SF6 is generally used as an insulating medium. It signifies that the contact point of copper bus bars is protected by a three-position switch and vacuum circuit breaker by SF6 gas in GIS systems. You will find that gas insulated substations are of indoor as well as of outdoor types. It has been seen that HV Air-Insulated Switchgear requires ten times more space than Gas Insulated Switchgear. GIS applications should be made within 72.5 KV to 1200 KV.
Air Insulated Switchgear
The devices of Air Insulated Switchgear, for example, isolates, grounding switches, transformers, instruments, busbars, breakers, and so on are kept separated at certain distances in the open air. That is why Air Insulated Switchgear or HV Air Insulated Switchgear consumes more space than Gas Insulated Switchgear. You will have to spend less money and less time installing the system in Air Insulated Switchgear. AIS applications should be made within 1100 KV.
How Will You Choose The Right HT Switchgear For Your Home
The electric companies always try their best to give you an electrical appliance like HT Switchgear which is supposed to have outstanding features. They made them by following international standards as well as testing methods. HT Switchgear is built with top-quality components. You are allowed to expand each component and make it function very smoothly.
The Components Of HT Switchgear
Several components are there for HT Switchgear. They are as follows:
- Circuit Breaker
For connecting or disconnecting the circuit in the HT Switchgear a circuit breaker is used. It is also used for regulating and protecting the electrical circuit. Circuit breakers are more effective than fuses. There are three types of circuit breakers that are used in HT Switchgear. They are air circuit breakers, vacuum circuit breakers, and SF6 circuit breakers.
- Capacitor cabinet
The task of the capacitor cabinet is to conduct voltage across various parts of the circuit in HT Switchgear. The capacitor filters the current and makes the voltage flow to the important parts of the circuit. The current is saved by the capacitor for a while and the circuit is made to run stronger.
- Busbar cabinet
A thick rod or sheet made of aluminum or copper is known as Busbar. Electrical energy is received by it from one or more circuits. Through various circuits, it distributes energy.
- Measuring cabinet
For measuring electric energy in HT Switchgear a measuring cabinet is used.
- PT Cabinet
For measuring voltages, a PT cabinet is used. It is also used for protecting each Busbar against overvoltage.
- Grounding Knife
Everything Switch or Grounding Knife is used to ensure the safety of the personnel at the time of line and appliance maintenance by grounding.
- Relay
It helps to regulate and control the circuit.
To Sum Up
You have come to know all you need to know about HT Switchgear. Visit the electrical shops and choose your HT Switchgear very quickly for your home.
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