Why should we use relays instead of switches?

Why should we use relays instead of switches?

I believe that some of you may be curioused that why should we use relays instead of switches.

Well, let's come and have a look at it.

Relays are used to electronically control the switching of any device. For example, the water level in an elevated water tank is monitored by certain sensors, and the pump will automatically turn on or off. Relaying is an important step towards automation.

There are many types of relays, but all steps are steps for automatic control of equipment. We can use relays controlled by relays and low-power control circuits to control machines that use high voltage and are potentially dangerous. Therefore, we avoid the risk of accidents.

By using gas/smoke operation relays, fire alarms can prevent fires in buildings, hotels, shopping malls, etc.

Buchholz relays protect transformers from insulation failure problems. Overcurrent and ground fault relays protect transformers and transmission lines. There are too many devices in the list for protecting electrical systems, such as impedance relays, low frequency relays, overload relays, etc.

Using relays can minimize manual monitoring and improve operation timeliness. If we manually monitor certain equipment, the time required to take preventive measures will be longer than that of the relay system.

Hope it would help to resolvev your question.