Automatic Changeover Switch using Contactors

This diagram shows Automatic Changeover Switch using Contactors. Here we simply use a magnetic contactor and DP MCB, a generator. Firstly all we need to connect the grid line to a single-phase energy meter. Then put power in the MCB from the Energy meter. And then we connect with magnetic contactor input and output for another MCB. Also, connect with the generator. An automatic switch can change the power source automatically when needed. This circuit can make good automatic changeover connections.

Diagram of Automatic Changeover Switch using Contactors wiring

Fig 1: Automatic Changeover Switch using Contactors

Components Need for this Project:

You can get the components from any of the sites below:

Single Phase Energy Meter [See Buy Click Amazon]
Magnetic Contactor [See Buy Click Amazon]
DP MCB [See Buy Click Amazon]
Power Generator [See Buy Click Amazon]

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Components used to make the Changeover Switch using Contactors:

01. Single Phase Energy Meter

Fig 2: Single Phase Energy Meter

The measuring device with the help of which the electric power or energy of a circuit is measured is called Energy Meter (Energy Meter). Also called a watt-hour or kilowatt-hour meter. For home appliances, we used a single-phase energy meter. The single-phase energy meter is directly connected between the line and the load. Both coils produce their magnetic fields, when the meter is connected to the supply line, and the load. Energy meters are used in homes and in industrial applications where we want to found that how much energy is being consumed by home appliances and electrical equipment.

02. Magnetic Contactor

Fig 3: Magnetic Contactor

A magnetic contactor is an electrical device used for load control, automation, and protection. It is much like a magnetic reel. However, relays are generally used for low power and voltage, on the other hand, when we think of high power, these heavy-duty contractors only come to mind. It basically works by switching the load on and off. It has 3 terminals whose inputs are denoted as L1, L2, L3, and outputs as T1, T2, and T3. The circuit of the load is made in automation mode or protection using auxiliary contacts. It has two types of terminals. 1) Normally Open (NO). 2) Normally Closed (NC)

03. DP MCB

Fig 4: DP MCB

Double pole MCB can control two wires. This circuit breaker is generally used in single-phase electric lines. Double pole MCB circuit breaker input has two wires supply two wires and an output. In a single-phase line, A double-pole MCB circuit breaker is used to give good production. This circuit breaker is provided through phase and neutral circuit breaker, it is very safe. This circuit breaker is preferred for home appliances. A DP MCB usually trips for 2 reasons 1. Overload 2. Short circuit.

04. Power Generator

Fig 5: Power Generator

The Power Generator Is a Device That Converts Motive Power (Mechanical Energy) or Fuel-Based Power (Chemical Energy) Into Electric Power for Use in an External Circuit. In Addition to Electromechanical Designs, Photo Voltaic, And Fuel Cell-Powered Generators Utilize Solar Power and Hydrogen-Based Fuels, Respectively, to Generate Electrical Output. The Reverse Conversion of Electrical Energy Into Mechanical Energy is Done by an Electric Motor, And Motors, And Generators Have Many Similarities. Many Motors can be Mechanically Driven to Generate Electricity; Frequently They Make Acceptable Manual Generators.

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Automatic Changeover Switch using Contactors