What Is Magnetic or And How It 73103o

What is Magnetic or and How It's works. We know that for power wiring / 3 phase motor wiring we use mostly the magnetic or or motor starter. In this post we will study the magnetic or importance, working / function and it's uses in electrical technology. I also share post about M or wiring diagram but this post specially for function and working of 3 phase or or motor starter. What is Magnetic or? We can also said that a or is type of electrical relay which we use for power electric motor to start or stop. or make easy to controlled 3 phase induction motors. We know that 3 phase motor required three phase supply to run, 3 phase supply is two dangerous which we can not handle with a circuit breakers for induction motor. or make easy to handle the 3 phase motor controlling. The parts of the magnetic or are coil, iron core, 3 s points and NC, NO points.

ors How a Magnetic or Works The function of a or or motor starter is simple, when the AC supply goes to the or coil, the coil make a strong magnetic field and field pulls the iron core to the coil and make a electrical s.

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What are NC, NO in or The NC means the Normally close electric circuit or we can said it is a normally close s and NO meas normally open s. In normal state when or coil does not energize the NC point is normal close state and when the coil energized these NC s create a NO s between one another, after coil deenergized NC s make a close circuit. Same the NO s change on coil energizing to the NC s.

What is a thermal overload relay? A thermal overload relay is a small electromechanical device that protects motors from overheating. These relays help to control the electrical current that goes to the motor to prevent it from overheating. If the motor pulls too much electricity for an extended period of time, the relay may flip and cut the power to the motor to prevent damage.

Overload relay TH-P20E

The thermal overload relay has three bimetal pole, or strip, relays that are equipped with bimetal tripping elements. The current for the motor runs through these three elements. The tripping elements and poles are heated directly by the electrical current or indirectly by the current by ing through the insulated heating winding that forms part of the protective housing around the pole, or strip. When too much electrical current es through the pole, it causes it to overheat. As the pole overheats, it begins to bend. This causes the tripping elements to engage, releasing the relay and causing the s to switch positions, shutting off the electrical supply to the motor. Because they are designed to help avoid overheating and causing damage to the motor, the temperature readings given by the thermal overload relay might be hotter than the motor actually is. The relay works to shut off the excess electrical current before it reaches the motor which results in the temperature discrepancy.

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