What is a direct starter on the line?

The direct starter on the line (Dol) is one of the simplest methods for starting an electric motor. It works by adding a high level of voltage current to each engine terminal. This starting engines method is traditionally used in devices such as compressors, fans, water pumps and conveyor belts. Direct starter on the line can be used in conjunction with the second Dol circuit, which provides the engine the ability to run forward and backwards.

This method of starting the engine is a bit like using a defibrillator to jump a patient who has a stopped heart. By providing a rapid increase in the maximum engine power, a direct starter kick on the line will start life and runs machines. This type of starter can only be used if the power supply can handle the massive influx of energy, which provides the downstairs. Weak or already excessive circuits are not the best methods to support the starters Dol because the intensive UPON load is to run the engine can lead to excessive voltage drop for everything elseattached to the line.

The protection of the engine itself from overload is important when using a direct starter on the line. The most common type of protection is the thermal overload relay, which prevents the engine from overheating from the voltage used during the start. There are two general types of thermal protection of the device: bi-colored strips and eutectic alloys. With bi-metal strips, it causes a dramatic rise in the temperature of the circuit burning and stopping the power supply to the engine. On the other hand, the eutectic alloy melts when the metal heats up too much and opens the perimeter that stops the engine.

Direct On Line Starter Methods can use multiple circuits, which gives the engine the ability to run both clockwise and counterclockwise. This is a branched switch; Only one standard can be selected before connecting the direct starter on the engine line. Depending on the position of the mechanical switch on the device that rowsThe initial direction will be guided, one or the other circuit will be activated after starting the engine. The engine then begins to spin in the selected direction.