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What is the Difference between auxiliary contactor and power contactors?
Wiki User
∙ 9y ago
Power contactors are used primarily for more sophisticated equipment that need several different points of contact. Auxiliary contactors are primarily for single connections.
Wiki User
∙ 9y ago
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What is the difference between a motor starter and a contactor?
Motor started will have overloads the contactor connect es line voltage.
What is the difference between a relay and an auxiliary relay from constructionapplication poin of view?
I think aux relay is part of relay
How does an automatic transfer switch work?
In a nut shell. Transfer switch senses incoming voltage (power company) through a relay. When relay drops out due to lack of voltage, contacts close and start the generator. When generator gets up to speed, second relay senses the generator's voltage and opens contactor that is connected to power company's incoming voltage. When that contactor is open, its auxiliary contact closes the generator contactor. The load side of both contactors are connected together to a load (could be a house, factory, hospital, machinery) With the generator contactor now closed the generator is supplying voltage to the load. Still with me? When the incoming (power company) voltage resumes, it energizes a timer until the power is stabilized, usually about 5 minutes. The timer contacts drop the generator contactor out, dropping the load for about a 1/4 of a second and re energises the incoming voltage contactor. The generator usually stays running up to 10 minutes to cool down and it then shuts its self off. The transfer switch is then ready for the next power failure. Some nut shell.
What is magnetic line voltage motor starter?
A motor starter is a contactor (heavy duty relay) which acts as a remote-controlled on/off switch between the supply and the motor. Its operating coil is energised through an auxiliary stop/start circuit. It also incorporates overload function which will automatically disconnect the motor in the event of a sustained overload current.
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.
Is there any difference between the switching action of relays and contactors?
No, there is not any difference between the switching action of a relay and a contactor. Both of these devices are operated by an electro magnetic coil.
What is the difference between main contactor and axualiary contactor?
The load contactor is what the motor load is usually connected to. The auxiliary contacts are usually used in the stop start remote wiring to seal the mag in. Auxiliary contacts are also used to transmit the status of the contactor to a PLC.
What is the difference between modal and primary auxiliary?
difference between primary auxiliary verbs and modal verbs
What is the difference between a motor starter and a contactor?
Motor started will have overloads the contactor connect es line voltage.
What is the different between contactor and relay?
A contactor, as far as being used to start a motor or the like, is in essence, a relay. A coil is energized and the normally open contacts from the contactor close (normally 3 contacts for an AC motor) and the motor starts. Do I understand your question? Or are you trying to decifer the difference between the coil of a relay and the contacts of a relay?
What is the difference between main and auxiliary memory?
The major difference between main memory and auxiliary memory is that main memory is directly accessed by CPU but the auxiliary memory is not accessed by the CPU directly.For this the data is first transferred to main memory from auxiliary memory and then from main memory the data is transferred to the CPU for further processing. Answered By: Richa Singh
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).
What is the difference between a copulas an an auxiliary verb?
Copula is a verb that connects the subject to a noun or adjective. Auxiliary verb is a verb that serves as a helping verb.
What is the difference between contactor transformer?
Relays and Contactors are electromagnetic switches. The onlydifference is that relays are usually used for low voltageapplications while contactors are used for higher voltageapplication. Contactors usually have Overload protection.Some examples that I can give (at least in Manufacturing ofIndustrial Control panels):-Relays are use as electromagnetic switches to controlcertain parts of a circuit (low voltage application). Abetter example would be such as if you want your circuit tosound a horn when a certain abnormality is happening at acertain period of time, then depending how you set up yourcircuit, a specific relay will either open or close and youhorn will start making the sound.-Contactors can be used for example, to start motors or anumber of motors that require a higher voltage in order forthe motor or motors start working. In the example that Ijust gave, contactors work as starters.
What has the author H W Turner written?
H. W. Turner has written: 'Advances in electric fuses; a summary of published information, 1950-1965' -- subject(s): Bibliography, Electric fuses 'The temperature rise and millivolt drop of contactor contacts' 'Net arc transfer between copper contactor contacts in a D.C. circuit at voltages up to 500 V' -- subject(s): Electric arc, Electric contactors, Electric contacts, Testing 'The relation between wear of copper contacts and arc current' -- subject(s): Electric contactors, Testing 'Calculation of the effect of preheating on the pre-arcing time of fuses' -- subject(s): Electric fuses, Testing
What is the difference between a relay and an auxiliary relay from constructionapplication poin of view?
I think aux relay is part of relay
What is the Difference between a magnetic starter And a contactor?
Motor starter usually refers to the complete assembly, including enclosure, contactor, control transformer (if any), overloads, fuses (if any), etc. A contactor is really just an overgrown relay, and is just one component of a starter. That having been said, many folks use the two terms somewhat interchangably. So someone who says starter may mean contactor, and vise-versa. Go figure.
