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How many circuits can share one neutral?
Yes, this is done on star (wye) systems where one neutral is used for three phase wires. e.g. 120/208 voltage system.
Is there an advantage of having a neutral wire in an unbalanced electrical system?
A neutral wire is essential in a three-phase star (or wye) connected system supplying an unbalanced three-phase load. Without a neutral, the voltage across each of the loads may become unbalanced, too.
Why it is necessary to earth the star point of three phase circuit?
The star or neutral point is earthed at the supply transformer to prevent the system building up a static electric charge in dry weather.
What is neutral in electricity in India?
Neutral in electricity in India is the zero current phase wire that provides a return path to the current. If it is a 3-phase star connection then the common point to which all the phases are connected becomes the neutral. It may or may not have a ground potential depending on phase balance. Generally neutral has zero potential as all the phases are 120 electrical degrees apart and thus electrically balanced. But in casee of a fault the neutral voltage may exceed the ground potential which may be harmful. Therefore it is preferred to ground the neutral to avoid accidents.
Is a neutral solution a acid or a base?
A neutral solution is true neutral with a pH of 7,00.
Why spin angular velocity of a star is hreatly exhanced when it collapsrs under gravitational pull and becomes a neutral star?
The answer may depend of what you mean by a "neutral star". That is an expression which is not recognised.
What follows a supernova and has a neutral charge?
A neutron star
Is there a neutral zone between the federation and the Romulans in Star-trek?
There is a 'Neutral Zone' between the United Federation of Planets and the Romulan's Star Empire . ~ See related link below .
What causes the atoms to have neutral charge in a neutron star?
A neutron star is not made of atoms; it is made of neutrons. It is electrically neutral because the matter that collapsed to form it contained the same number of electrons and protons.
How genrate neutral in star connection?
A neutral isn't 'generated'. The neutral exists naturally at the star point of a star-connected system -i.e. the common point of connection between the three phases which is normally connected to earth, either directly, or via some sort of impedance which is designed to restrict the value of any fault current that might occur.
Why star point of star connected motor is not grounded?
Another AnswerA motor represents a balanced three-phase load and, therefore, there is no neutral current, so there is no requirement for a neutral connection. Regulations prevent an earth being used as return, so the star point shouldn't be earthed either.
How do you find neutral current in star connected circuit?
if it is balanced then neutral current is zero (!,e iR=iY=iB).AnswerFor both a balanced and an unbalanced load, the neutral current will be the phasor sum of the line currents.
How can you how can you detect wye from delta with neutral connections?
The star connection has three phase terminal leads and one neutral lead. In case of delta connection it has got three phase terminal leads. the star connection is generally represented by Mercedes symbol with neutral line drawn from the mid point. The delta is represented like a triangle symbol with noneutral line shown.
What is the star point of a CT?
The term, 'star point', refers to the common point of connection for the three windings of a star-connected (wye-connected) transformer connection. The star point is usually earthed (grounded) and provides the neutral point of the connection.
How many circuits can share one neutral?
Yes, this is done on star (wye) systems where one neutral is used for three phase wires. e.g. 120/208 voltage system.
What is the maximum neutral current for a three phase delta star system?
It is either a delta or a star, it can't be both. A delta system doesn't have a neutral so the question must be about a star system. A high neutral current happens for example when one line is disconnected, and the neutral current then equals the current in the other two lines, which is the same current as when two lines are disconnected leaving only one line.There might be ways of calculating how to make the neutral current larger by using unusual power factors, but the above is a useful working maximum that allows all four wires of a four-wire star system to be the same size.AnswerThe term, 'delta-star', refers to a three-phase transformer connection in which the primary windings are connected in delta while the secondary windings are connected in star (wye). This is the standard three-phase connection, in Europe, for distribution transformers. Single-phase loads are connected to the secondary between alternate lines and neutral, in order to try to and balance the resulting load and minimise any resulting neutral current. Obviously, however, without having any specifications supplied, it is quite impossible to answer this question.
Why we use delta-star transformer instead of star-star transformer in a consumer plant.?
There is a problem called "neutral phase shift" in star-star transformer, if we connect unbalance load(single phase load at secondary), then the phase point is shifted towards neutral. we require sinusoidal secondary voltage at secondary, for this flux must be sinusoidal. Flux will be sinusoidal, if it contains the third harmonic component of exciting current. so third harmonic current can not flow in star-star transformer. so we use delta-star transformer,in delta , third harmonic component can flow & get sinusoidal output.
