Automatic changeover switch using contactors:
This diagram shows how to make an automatic changeover switch using contactors. In this circuit diagram, we use a single-phase energy meter, 2 DP MCB ( Double Pole Miniature Circuit Breaker ), 2 magnetic contactors, and a power generator. First, we need to input power to the single phase energy meter, then from the energy meter to input power DP MCB, then input power to magnetic contactor connection from DP MCB, then input power to another DP MCB from the power generator, then input power to the contactors. Now it’s ready for use. If you want to know more about this circuit please check our youtube video below the post.
Diagram of Automatic changeover switch using contactors:
Components needed For this Project:
You can get the components from any of the sites below:
- Single Phase Energy Meter [See Buy Click Amazon]
- DP MCB [See Buy Click Amazon]
- Magnetic Contactor [See Buy Click Amazon]
- Power Generator [See Buy Click Amazon]
*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!
Components used to make the Automatic changeover switch using contactors:
01. Single Phase Energy Meter:
A Single-Phase Energy Meter is a sort of Watt-Hour meter. It consists of two Electromagnets. Single-Phase Energy Meter is also Popularly known as a watt-hour meter. One Magnet is called the shunt magnet Ml which is Mounted with a Pressure coil. The Pressure coil is a long coil Made of fine Copper wire which is connected across the Supply line. Single-phase energy meters are suitable for measuring single-phase AC current frequencies of 50/60 Hz, which are used for fixed indoor installations.
02. DP MCB:
DP MCB In Two Pole MCB, switching & protection is affected in phases and the neutral. A Double Pole or DP Switch is a Switch that Controls two Circuits at the same time. In terms of Residential Switching, this Normally means it Switches the live and Neutral at the same time. In Layperson Terms, Double Pole switches or DP Switches are Exclusively Designed to Control two Different Electrical Circuits at the same time, which allows the Appliances to Isolate in a safe and reliable manner. Fan or light Combinations and Medical Equipment are some of the many applications for DP Electrical Switches.
03. Magnetic Contactor:
A magnetic contactor is an electromagnetic switching device. It is generally used for controlling three-phase motors. The operation of a magnetic contactor is similar to that of a relay, but a relay is used for low-power or low-voltage connections, and a magnetic contactor is used for high-power or high-voltage connections. As soon as the supply is applied to the magnetic contactor coil, its normally open contacts are closed and normally closed contacts are opened and the associated devices are also operated. This is how a magnetic contactor works.
04. Power Generator:
An electric generator is a type of electrical device that converts mechanical energy or power into electrical energy or power. However, dynamo generally refers to generators only. The first generator built was called dynamo. This electrical device makes this conversion using the principle of kinetic electromagnetic energy generation. According to Farad’s principle of electromagnetic induction, a dynamic electromagnetic induction is induced in a conductor when it passes through a magnetic flux.
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