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How does a shading coil in a contactor actually work?
A shading coil in a contactor is used to hold the AC contactor's pole faces closed during the transition of the voltage through the zero voltage phase of an electrical cycle.For an excellent description see related links below.
Does Square D make a single pole contactor with a 24 volt coil?
Yes, I just brought one today for $13.
How many wires to control a mechanically held contactor?
A contactor is a type of switch. However this switch uses electricity to power an electromagnetic coil to switch on or off power. Hence a contactor needs 2 wires - A live/hot wire and a neutral wire. Generally these are connected across the A1 and A2 terminals of the contactor.
How do you calculate contactor capacity of star contactor?
metres
What is the difference between an definite purpose contactor and a lighting sontactor?
A definite purpose contactor is designed (and rated) for a specific load. So a lighting contactor is one example of a definite purpose contactor. A motor starter contactor is another example. So, a lighting contactor is a definite purpose contactor, but a definite purpose contactor is not necessarily a lighting contactor (it might be a motor starter, for instance).
If your air conditioner has a one pole contactor can you replace it with a two pole contactor?
Yes, just use one pole. The other pole is then in effect an unused spare.
What causes an electrical contactor to make a buzzing noise when activated and what should be done about it?
Contactor chatter can be caused by a broken shading ring winding on the pole face of the contactor. Low voltage to the coil can be another reason for contactor chatter. A constant hum on a contactor will be caused by misalignment to the two pole faces. Check for rust building up on the two surfaces.
What would cause a lighting contactor to hum vigorously?
The first thing that springs to mind is that the pole faces of the contactor are dirty. If the contactor is in a position where it can get weathered, it would probably be a rust built up. Dis assemble the contactor and emery cloth the pole faces until they are shiny again. A light wiping of oil will increase the time between cleanings. If the sound is more like a chatter then the shading coil on the contactor's pole face could be cracked or broken. This small copper coil is used to induce magnetism into the pole face to hold the contactor closed as the voltage transits through the zero voltage of the sine wave cycle.
How many phases does a 2 pole contactor have?
Yes, as long as the amperage rating is sufficient. Just don`t wire the second pole until the first pole contacts are spent. Then move the wires over and you effectively get twice the life out of it.
How many paths for current flow are there in a three pole contactor would allow?
3
How does a shading coil in a contactor actually work?
A shading coil in a contactor is used to hold the AC contactor's pole faces closed during the transition of the voltage through the zero voltage phase of an electrical cycle.For an excellent description see related links below.
What should the resistance on a 30 amps triple pole contactor measure?
If the coils pulling the contactor in, you should have negligible resistance. If the contactor is not in, then you should have open circuit. Unless your measuring the resistance of the coil, in which case it will roughly be around 30ish ohms im guessing, depends on the coil voltage
What is the part of the contactor that gets magnetized by the relay coil is called what?
The part of the contactor that gets magnetized by the relay coil is called the armature or plunger. This is the component that moves when the relay coil is energized, causing the contacts to close or open depending on the design of the contactor.
Does Square D make a single pole contactor with a 24 volt coil?
Yes, I just brought one today for $13.
How many wires to control a mechanically held contactor?
A contactor is a type of switch. However this switch uses electricity to power an electromagnetic coil to switch on or off power. Hence a contactor needs 2 wires - A live/hot wire and a neutral wire. Generally these are connected across the A1 and A2 terminals of the contactor.
How do you know what contactor will work on your unit if you have a Trane model TWR042c100b2?
Most are fairly universal. Determine if you have a single pole or double pole contactor and see if the parts house will sell you one. If you know how to read a schematic, it is a piece of cake; if you don't, just remember kill the power to both indoor and outdoor units and to map the wiring before you remove the wires and you should have no problem.
How does magnetic contactor operate?
explain me about the contactor works with examples. if i want to control a motor with contactor. and how i can use contactor in loops with over load and circuit breakers.
