electrical interlocking system
This article is about Contactor Interlocking. Here, you will know how to do contactor interlocking step-by-step procedure. This article also includes with contactor interlocking circuit and wiring connection diagram. Contactor interlocking system has applications in motor starter(star-delta), power control circuits, power changeover circuits, etc.
What is Contactor Interlocking?
When an electrical circuit has two contactors and only one of them needs to be turned on at a time then the interlocking system is used. The interlocking system ensures that only one contactor can be on while another one will be in off condition even if we try to manually on.
An interlocking system is very useful for motor starter and power circuits. In a three-phase star delta motor starter, two contactors are used. One provides star connection while another provides delta connection. During starting time the Star-connected contactor will on and during the running condition delta connected contactor will on. If both of them are turned on at the same time, there will be a short circuit. So the interlocking system in a star-delta starter prevents the short circuit.
The interlocking system in a changeover circuit helps to connect the load with one source of power supply and isolated it from another source of power supply.
electrical interlocking system
This article is about Contactor Interlocking. Here, you will know how to do contactor interlocking step-by-step procedure. This article also includes with contactor interlocking circuit and wiring connection diagram. Contactor interlocking system has applications in motor starter(star-delta), power control circuits, power changeover circuits, etc.
What is Contactor Interlocking?
When an electrical circuit has two contactors and only one of them needs to be turned on at a time then the interlocking system is used. The interlocking system ensures that only one contactor can be on while another one will be in off condition even if we try to manually on.
An interlocking system is very useful for motor starter and power circuits. In a three-phase star delta motor starter, two contactors are used. One provides star connection while another provides delta connection. During starting time the Star-connected contactor will on and during the running condition delta connected contactor will on. If both of them are turned on at the same time, there will be a short circuit. So the interlocking system in a star-delta starter prevents the short circuit.
The interlocking system in a changeover circuit helps to connect the load with one source of power supply and isolated it from another source of power supply.
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