What is Switchgear and How Exactly Does it Work?

Posted by swapnil jukunte on February 14th, 2021

Since the invention of the wheel, any other invention which has helped humankind is electricity. From the remotest villages and biggest metropolitan cities, it has become essential. Electricity is like a blessing for us, yet at least 30 deaths occur daily because of electrocution. 

When it comes to the electrical supply, we need to be so much safer. The security of electrical distribution is done through various protective devices. To overcome such issues, a switchgear device is used. It is used as a carriage and helps distribute load while keeping the electrical connectors in check.

It also helps check the symptoms of electrical hazards like short circuits, faults and failure in connections. Let’s look at switch gears in detail and also how it works to provide safety.

What is Switchgear? 

It is a protective device that switches, controls, and protects the electrical equipment. It is in charge of handling the switching and interrupting currents under different operating conditions like normal or abnormal. 

In an electric power system, switchgear is a system that contains switches, circuit breakers, fuses which are used to protect, control & separate electrical devices. 

This device is generally seen in the power transformer’s low & high voltage planes and is connected directly to the electrical supply system. 

It is very important to help you and the electrical equipment in protecting from the heavy high-voltage current. In the absence of switchgear, your appliance will get damaged from the heavy current. 

Features of Switchgear
  1. Switchgear has a manual control provision. It is easy to control and understand, as well.

  2. Upon detecting any flaw, it takes immediate action and hence protects humans and the devices.

  3. Due to its quick operation and technological improvements, you can stay stress-free and rely on the switchgear. 

  4. It makes complete and clear discrimination.

Working of Switchgear 

Few of the most important switchgear components are fuses, switches, relays, circuit breakers, etc. This allows operating devices like electrical equipment, generators, distributors, transmission lines, etc. A huge high-voltage current will flow through these devices if a short circuit occurs in the power system. 

In such a scenario, the equipment can be damaged, and the interruption will occur to the operators. To help during this fault, switchgear is used to detect the symptoms of a fault in the electrical distribution system. In this way, this works to protect the equipment from damage.

Types of Switchgears

There are three types of switch gears, namely LV (Low voltage), MV (Medium voltage) and HV (High voltage) Switchgear.

Low Voltage Switchgear

This is switchgear for low voltage equipment, i.e., up to 1KV. It mainly has switches, circuit breakers, earth leakages, miniature circuit breakers (MCB), and moulded case circuit breakers (MCCB).

Medium Voltage Switchgear

The power system which can handle up to the capacity of 36 kV is called the MV switchgear. You’ll come across these in various types, such as metal enclosure outdoor type, metal-enclosed indoor & outdoor type, etc.

High Voltage Switchgear

A power system which can take more than 36 kV. During the making of this device, special care is taken as the voltage level is very high. The main component of this equipment is the High Voltage (HV) circuit breaker.

Now that you know everything about switch gears, you are set to look into more electrical supply details. Don’t forget to check out IndoAsian’s durable and high-quality electric equipment. Made from International safety standards, you won’t be disappointed. 


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swapnil jukunte

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swapnil jukunte
Joined: November 4th, 2015
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