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What is the formula use for calculation voltage and current in star and delta?
Balanced Star (Wye) Connected Systems:Line Voltage = 1.732 x Phase VoltageLine Current = Phase CurrentBalanced Delta Connected Systems:Line Voltage = Phase VoltageLine Current = 1.732 x Phase Current
When an alternating voltage is applied to purely resistive circuit what happens?
When an alternating voltage is applied to a purely resistive circuit, the resulting current is in phase with the voltage.
How line voltage is equal to root three phase voltage for star connected load?
Let's start with the correct terminology. The three energised, or 'hot', conductors are called 'line' conductors (not 'phase') conductors. which (surprise, surprise!) is why the voltages across them are called 'line voltages'.In the case of a star (wye) connected, three-phase, four-wire, system each phase is connected between a line and the neutral. And, yes, the line voltage is indeed root-3 (or 1.732) times the phase voltage.If the lines are labelled a, b, c, and the neutral is labelled N, then line voltage Vab is equal to the phasor (vector) sum of phase voltage Van and phase voltage Vnb, which are displaced from each other by 60 electrical degrees. The length of the resulting phasor is 1.732 times either of these phase voltage.
What is a y configuration on a 3 phase circuit?
On a wye connection all three ends of the phase winding coils are connected together and grounded. The other end of the three phase winding are connected to the supply voltage.
Is transmission line voltage phase to phase?
Yes usually it would be phase to phase voltage because most transmission lines are set up in a delta configuration. This means that there is no neutral conductor to use as a reference. So any voltage would be measured with reference to another phase.CommentLet's get the terminology correct. The voltages between the three 'hot' lines of a three-phase, three- or four-wire, system are called 'line voltages' even though, in the case of a delta-connected system, they are numerically-equal to the corresponding phase voltages. Therefore, we call the conductors 'line conductors', not 'phase conductors'.There is simply no such thing as a 'phase-to-phase' voltage. Just think about it; you can only measure a voltage acrossan individual phase, so how can you possible measure a voltage 'phase-to-phase' -I mean, where would you place a voltmeter to do that?For a delta system, the line voltage (or line-to-line) voltage is numerically equal to the phase voltage (notphase-to-phase). For a star (or 'wye') system, the line voltage is equal to 1.73 x the phase voltage.
Is line voltage or phase voltage mentioned on transformer nameplate?
It depends how they are connected. If they are connected between line conductors then they are measuring line voltages. If they are connected across phases then they are measuring phase voltages.
What will happen if you use phase to phase voltage for a single phase device?
If a single-phase device is connected to a phase-to-phase voltage, the device may get damaged due to the higher voltage applied. Single-phase devices are designed to operate at a lower voltage compared to phase-to-phase voltage levels typically found in three-phase systems. It is important to match the voltage ratings of the device with the supply voltage to prevent damage.
Why the voltage applied to each winding in a STAR configuration of three phase is reduced?
In a star configuration, often called "Y", the voltage across one winding is from a phase to ground. Phase to phase you have voltage across 2 windings. And at the risk of confusing you, the phase to phase voltage is not double the other because the windings are only 120 degrees out of phase and not 180 degrees. To calculate this you take the voltage of one winding, 120v for example, and multiply by the square root of 3, or about 1.732, and get 208v. Or you take 277v and get 480v.
Why is phase voltage not twice line voltage?
Line to line voltage is not the same as line to neutral voltage because line voltages are 120 degrees apart. They are related by: Line to neutral voltage * tan (120 degrees) = Line to neutral voltage * 1.73.Additional CommentFor delta-connected systems, the line voltage is the same as the phase voltage.For wye-connected systems, the line voltage is larger than the phase voltage by a factor of 1.732. The reason for this is as follows:Because any two phase voltages are displaced from each other by 120o, they must be added vectorially, not algebraically, to find the line voltage. As the above answer points out, this means that the relationship between the two is the square-root of 3, or 1.732.
Which has the higher voltage - phase or line?
In a three phase three wire system, the phase voltage and line voltage are one in the same just different terminology. In a three phase four wire system, the line voltage is higher than the line to ground voltage. Line to ground is, line voltage divided by 1.73 (square root of three). For example 480volts /1.73 = 277 volts.AnswerIt depends upon the configuration of the three-phase system. For a delta (or mesh) connected 3-wire supply system, the line voltage is exactly the same as the phase voltage. For a wye (or star) connected 4-wire supply system, the line voltage is 1.732 (the square-root of 3) times the phase voltage.By way of explanation, for both wye and delta systems, phase voltages are measured across the windings of a three-phase transformer or across individual loads, whereas line voltages are measured between lines. For a wye-connected system, phase voltages can also be measured between any line and neutral.
What is the formula use for calculation voltage and current in star and delta?
Balanced Star (Wye) Connected Systems:Line Voltage = 1.732 x Phase VoltageLine Current = Phase CurrentBalanced Delta Connected Systems:Line Voltage = Phase VoltageLine Current = 1.732 x Phase Current
When an alternating voltage is applied to purely resistive circuit what happens?
When an alternating voltage is applied to a purely resistive circuit, the resulting current is in phase with the voltage.
How line voltage is equal to root three phase voltage for star connected load?
Let's start with the correct terminology. The three energised, or 'hot', conductors are called 'line' conductors (not 'phase') conductors. which (surprise, surprise!) is why the voltages across them are called 'line voltages'.In the case of a star (wye) connected, three-phase, four-wire, system each phase is connected between a line and the neutral. And, yes, the line voltage is indeed root-3 (or 1.732) times the phase voltage.If the lines are labelled a, b, c, and the neutral is labelled N, then line voltage Vab is equal to the phasor (vector) sum of phase voltage Van and phase voltage Vnb, which are displaced from each other by 60 electrical degrees. The length of the resulting phasor is 1.732 times either of these phase voltage.
What is phase voltage and line voltage in star connection?
The conductors that connect a three-phase supply to its load are called 'line conductors' or, more simply, 'lines'. The individual generator stator windings, transformer winding, or loads are called 'phases'. Lines and line terminals are identified by colours, letters, numbers, or combinations of letters and numbers. For example, A-B-C. Phases are identified by using the letters assigned to the line terminals between which the phases are connected, e.g A-B, B-C, and C-A. Voltages measured between lines ('line-to-line') are termed 'line voltages', and currents that pass through the lines are called 'line currents'. Voltages measured across a generator's windings, transformer windings, or individual loads, are called 'phase voltages', and the currents that pass through these are called 'phase currents'. For a three-phase, three-wire, system, the phase- and line-voltages are numerically-equal to each other. For a three-phase, four-wire, system, the line voltage is 1.732 times larger than the phase voltage.
What is the formula for calculating DC votage from a 3 phase rectifier bridge using AC voltage across one phase?
A 3-phase rectifier bridge can be used with a single phase supply, it just means that four of the diodes are not connected. The peak voltage (if a reservoir capacitor is used) is sqrt(2) times the rms supply voltage and the average voltage using inductor smoothing is 0.9 times the rms voltage.
When a capacitor and a resister are connected in parallel how many degrees out of phase are the current flow through the resistor and the current flow through the capacitor?
When a capacitor and a resistor are connected in parallel, the current through the resistor and the current through the capacitor are 90 degrees out of phase. The current through the resistor is in phase with the voltage across it, while the current through the capacitor leads the voltage by 90 degrees. This phase difference results from the reactive nature of the capacitor, which affects how current and voltage relate in AC circuits.
Does the speed of a split phase motor change apporeclably with a change in the applied voltage?
no
