Dol Starter Control Circuit Diagram Explanation

By | July 24, 2022



Dol Starter Control Circuit Diagram Explanation



In many industrial plants, direct-on-line (DOL) starters are used to start the motor. The DOL starter is a simple, low-cost and reliable method of controlling motors. It is widely used in a wide range of applications due to its flexibility and ease of use. However, it has certain drawbacks such as the risk of overload and lack of selectivity. This article will explain the DOL starter control circuit diagram in detail and discuss topics related to wiring diagrams.

The DOL starter is an electrical device that is used to start large electric motors. It consists of a motor starter, a contactor, and an overload relay which are connected together to form a complete starter unit. The starter consists of two separate circuits. The first circuit is the control circuit and the second circuit is the power circuit. The control circuit is made up of an input switch, a contactor, and an overload relay. The power circuit is made up of the motor and the starter cables. In this article, we will discuss how the control circuit works and how to wire the DOL starter using a wiring diagram.

Understanding the Control Circuit



The control circuit is responsible for controlling the operation of the starter. When the input switch is closed, the contactor is energized and the overload relay is then activated. When the overload relay senses an overload, it will trip and open the contactor. This will prevent the motor from operating. The overload relay also serves as a safety mechanism and will protect the motor from too much current.

Wiring the DOL Starter



When wiring the DOL starter, it is important to follow the instructions of the wiring diagram carefully. The diagram contains all of the necessary information about the connections between the components. The diagram should be read carefully before attempting to make any connections.

The first step in wiring the DOL starter is to connect the input switch to the contactor. This connection should be made using the appropriate wire size and conductor type. Once the input switch is connected, the next step is to connect the overload relay. This connection should also be made using the appropriate wire size and conductor type.

Once the connections are made, the next step is to connect the starter cables to the appropriate terminals on the contactor. This connection should be made using the appropriate wire size and conductor type. After the connections are made, the contactor can then be energized and the starter will be ready to operate.

Conclusion



In this article, we have discussed the DOL starter control circuit diagram and its components. We have also discussed the necessary steps for wiring the DOL starter. Finally, we have discussed the importance of following the instructions of the wiring diagram carefully when making the connections. By understanding the DOL starter control circuit diagram and its components, you will be able to safely and properly operate the starter.


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