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To Support this Blog. Current surge when motor is operated or commonly called the starting current can reach 4 to 7 times from the normal current of the motor. Various Motor Starter System However for Electro motors that have small power in general do not need a starting system that serves to reduce the surge of starting currents, Therefore, one of the starting circuit systems for electro motors with small power, is enough to use the Direct On line circuit.
Motor starter system using the Direct On Line circuit is the simplest, and is commonly used for electro motors that have a power smaller than 5. Motor 5. Because the working principle of the ON Push Button when released will be disconnected again, then the " Locking " series is added.
So, when the Push Button "On" is pressed, the voltage from the Push Button "On" will flow to the coil, and the magnetic contactor works, when the magnetic contactor works, the auxiliary terminal NO on the Magnetic contactor will be connected and also drain the voltage source from the Push Button "Off" towards coil.
Because the voltage source of the lock has been flowed towards the coil, when the Push button is "ON" removed, the magnetic contactor still works because it still gets a voltage source from the Push Button "Off".
Then when the Push Button "Off is pressed, the voltage source that passes through the auxiliary terminal" NO " Lock will be disconnected, and the Magnetic contactor will stop operating and disconnect the main circuit.
Push Button "On" is released - Magnetic contactor still works because it gets a voltage from "Locking" - Electro motor continues to operate. Push Button "Off" is pressed - the voltage source to the lock is disconnected - the Magnetic contactor stops - the circuit is disconnected - Electro motor stops operating STOP.
Components: 1. Magnetic Contactor Magnetic Contactor is a component that serves to decide or connect a circuit with the working principle of magnetic induction. The main terminal on the Magnetic Contactor used in the circuit consists of 3 terminals for connecting R, S, T phase from the voltage source to the Electro motor. Thermal Overload relay works based on the electric current that passes through the Bimetal section inside the Thermal Overload relay, if the amount of electric current passing through the bimetal exceeds the set setting, the bimetal temperature increases so that the bimetal curve.
The bimetal curl will touch the existing lever, and cause the terminal on the Thermal Overload relay to work, the NO terminal will be connected and vice versa the NC terminal will be disconnected.
Push Button Off Stop is NC Normally Close When the Off Stop button is pressed, the circuit or contact point that was originally connected will be disconnected, then if the button is released the circuit or the existing contact point will be reconnected.
Remember: The working principle of the Push button only works for a moment when pressed, when the pressure is released Not pressed the push button will return to its original position. My Electrical Diary. Subscribe to: Post Comments Atom. Wiring Diagram Direct On Line.
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Please download these 1 phase motor starter wiring diagram by using the download button, or right click on selected image, then use Save Image menu. A wiring diagram is an easy visual representation with the physical connections and physical layout of your electrical system or circuit.
It shows how the electrical wires are interconnected and may also show where fixtures and components could possibly be attached to the system. Wiring diagrams help technicians to find out how a controls are wired to the system.
Many people can understand and understand schematics generally known as label or line diagrams. This type of diagram is like choosing a photograph in the parts and wires all connected up. A wiring diagram is an easy visual representation from the physical connections and physical layout of an electrical system or circuit. It shows what sort of electrical wires are interconnected which enable it to also show where fixtures and components might be coupled to the system. Use wiring diagrams to assist in building or manufacturing the circuit or computer.
They are also ideal for making repairs. For example, your house builder should confirm the location of electrical outlets and lightweight fixtures employing a wiring diagram to avoid costly mistakes and building code violations.
A schematic shows the blueprint and function on an electrical circuit, but is not worried about the physical layout from the wires.
Wiring diagrams show what sort of wires are connected and where they ought to perfectly located at the actual device, and also the physical connections between every one of the components. Unlike a pictorial diagram, a wiring diagram uses abstract or simplified shapes and lines to demonstrate components. Pictorial diagrams tend to be photos with labels or highly-detailed drawings of the physical components.
If a line touching another line features a black dot, it implies the lines are connected. Most symbols utilized on a wiring diagram seem like abstract versions with the real objects they represent. A resistor will likely be represented with a compilation of squiggles symbolizing the restriction of current flow. An antenna can be a straight line with three small lines branching off at its end, similar to a real antenna.