Automatic Changeover Switch using Contactors

Automatic Changeover Switch using Contactors

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.

Automatic Changeover Switch using Contactors wiring

Components Need for this Project:

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

  1. Single Phase Energy Meter [See Buy Click Amazon]
  2. Magnetic Contactor [See Buy Click Amazon]
  3. DP MCB [See Buy Click Amazon]
  4. 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!


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Components used to make the Changeover Switch using Contactors:

01. Single Phase Energy Meter

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

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

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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Frequently Asked Questions

What is the methodology of an automatic changeover of the switch?

The automatic power supply change-over switch is a device that links the load and mains supply or the alternative supply together. This enables the use of either the mains of the supply or an alternative source when there is an outage on the mains source. This could either come in with three phases or a single phase.

What is a 3-phase automatic changeover switch?

A three-phase transfer of the switch (ATS) forms the interface between the Gen set utility and the consuming electrical equipment. the main function of ATS is, it monitor power supply sources for failure & transfer the load from one power source to another.

What are the features of a changeover switch?

Thus, the changeover switch ensures continuity of supply to the load by alternating between normal and alternate supply. The switch is in the ON position with normal supply available at the outgoing terminals. The switch is in the ON position with an alternate supply available at the outgoing terminals.

How fast is an automatic changeover switch?

YES1-GP 1600AMP 4-POLE Automatic Changeover Switch. This unit is an integrated type with self-input and self-recovery functions. It has a rapid response of the time of 1.2 seconds. The maximum voltage is 220 and 380 volts.

What is the difference between manual and automatic changeover of the switch?

Unlike a manual transfer of the switch, automatic transfer switches could be used with permanently installed standby generators. That way, when your power supply is disrupted and your company is subject to blackouts, your generator will automatically kick on and supply an emergency backup power supply to your building.

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