i cant find info about three phase generator ?
831085
"Three-phase electrical generation is very common. Three separate coils in the generator stator are physically offset by an angle of 120° to each other. Three current waveforms are produced that are equal in magnitude and 120° out of phase to each other."\n\nFrom Wikipedia, the free, online encyclopedia at:\nhttp://en.wikipedia.org/wiki/Alternating_current\n\nMore on three-phase on Wikipedia at:\nhttp://en.wikipedia.org/wiki/Three_phase\n\nFurther links are available on both pages...\n\nHope this helps!
847868
Are you talking about Distribution transformers ? Then that 3-phase transf. becomes free floating, which means the 'nutral' line receives ALL the phases WITHOUT nutralising them to the Earth reference potential (Standard 0 volts) and hence all the SINGLE PHASE equipment connected to power will experience the 3-phase voltage (up to 440 volts) rather than single phase (about 230 volts). You know what it will do. In case of single phase transformers, and looking at most common load-connection configurations, not much will happen. But you may find more interference on the electronic equipment connected to it.
216731
480 VAC is produced as a 3 phase power source. Widely used here in the USA for industrial applications.\n\nThis voltage is not typically considered single phase, it is Line - Line. The 480VAC is transformed into 120VAC/220VAC for typical control circuits after it enters a control cabinet. The control Xfmr uses 480VAC line-line on its input.\n\nThis voltage to earth ground is not 480VAC, it is 480V/sqrt(3) = 277VAC.\n\nCheck out the 3 Phase power distribution below:
797208
Not the easiest thing to explain via email but the best way to start is to understand clearly the function of the symbols shown in diagram. Once you understand what each item does find a starting point - usually the power supply and walk through it. ANother way is to get the corresponding termination diagram. I find them much easier to understand.
742046
For three phase AC powered loads, three separate power lines provide power to the load. The voltage waveforms on these three lines differ only in their timing, or phase relationship. A fourth wire may provide a neutral connection to the load. In the case of balanced loads, where the current in each of the three phases is equal, the current in the neutral wire will be zero. The neutral wire may therefore be eliminated, as it is not necessary for the purpose of carrying current. The vector sum of the currents drawn from the three phase lines will be zero with a balanced load. A non-zero sum of the current indicates an unbalanced load and that a current is returning to the generator, or current source, via an unintended path. This is the ground fault current.\n\nThe ground fault current for a three-phase system, without neutral, may be measured by performing a vector summation of the phase currents. This summation may be performed by a current sensing transformer with the phase currents passing through the common aperture in parallel. The magnetic field induced in the transformer core is then the vector sum of the three individual phase currents and the voltage induced in the secondary winding placed on the transformer provides a signal representing the vector sum of the currents, the ground fault current.\n\nThe electrical characteristics of ground faults in solidly grounded WYE systems allow for simple detection of ground currents by monitoring the phase and neutral currents for a simple unbalance in those currents. The principle is that the current going to the load on the normal phase and neutral conductors should return via those same conductors. Any missing current is deemed a fault to ground on the load side of the detector and, when that unbalance exceeds a set threshold, a ground fault is determined. The basic ways of measuring this unbalance for solidly grounded four-wire systems use one ground sensor surrounding the phase and neutral conductors, four individual current transformers connected in a WYE configuration, or four voltage sources connected in a delta configuration.
679769
I suggest you contact Stewart and Stevenson in Houston, Tx. They assemble a wide range of electrical generating systems.
756481
Normally this is a "Restive" not voltage question/answer, and the proper neutral to ground = 2 Megg ohms (min.) this being incorporated in a residential application.\nHigher voltage in let us say a 3-phase utilization this # is on the low side. (assuming a.c. source. d.c. is a completely different animal!
144211
i have only seen 120v motors in these ovens to be sure look @ the motor id plate. if this oven uses electric heat instead of gas the elements will be wired for 3 phase power and could possibly be converted check the wiring digram or intsallation guide
129261
Kilowatts  Equations\nDirect Current  =        I x E/1000\nAC / 1phase 115v or 120v =I x E x PF/1000\nAC / 1phase 208,230, or 240v= I x E x PF/1000\nAC 3 phase All Voltages     =    I x E x 1.73/1000\n\nE = Voltage \nI = Amps \nPF = Power Factor
486197
frequency generator is like tank circuit(lc circuit). it's main function is to regulate the energy stored in the inductance and capacitance. to know more you can read RESNICK HALLIDAY WALKER
92400
Usually a delt system is compared with a "Y" (wye) system.  A delta is a Greek letter often represented as a three-sided triangle and a Y is a letter with three members (two arms and one leg).  The important feature is threeness.\n\nElectrical power is supplied in three phases (single-phase, two-phase and three-phase) involving voltages of 110, 220 and 440 Volts, respectively.  Single phase is used for light bulbs, two-phase is used for heaters (such as clothes dryers and kitchen ranges) and three phase is used for very large motors.  Alternating current (AC) forms a sinusoid and in three-phase current the sinusoids are out of phase (reaching peak voltages at different times (but 60 times per second each) and this delivers high voltage and maximum power.\n\nThere are two common methods of winding transformers and motors to take advantage of three-phase current and these are referred to as "delta windings" and "Y-windings."  For purposes of circuit analysis they are equivalent.
169878
Most AC electrical sources can be converted to other phases, voltages and currents but not to increased power (P = IE) either using semiconductors, transformers or motor generator sets (and transformers).  Usually 240 Volt AC is obtained using two phases of a three-phase distribution system where a single phase is 110 Volts nominal (perhaps 120 Volts actual or stepped up) to double voltage to 240 Volts.  However, in the lab, many different phases, voltages and currents may be required for special applications and suitable converters must be found (or built?).
458600
You say 3 phase, so the simple amps times volts doesn't work.\n\nThe complete formula is KW= 1.73 * amps * volts * power factor /1000\n\nThe 1.73 is the square root of 3.  The amps is your line current (same as phase current if it is wye, not the phase current of a delta) and the volts is the phase to phase voltage (not phase to neutral of a wye).  Power factor is 1 for simple resistive loads, and is less than 1 for inductive loads such as motors and fluorescent light ballasts.\n\nIf you take the power factor out of the formula, you get apparent power measured in KVA.
734859
Divide by the voltage and multiply by 1000.\n\nIf you are working with 3 phase power, divide again by sqrt(3)
352019
http://en.wikipedia.org/wiki/Filament_winding
253005
The phase differences between the three phases of the polyphase electrical supply create a rotating electromagnetic field in the motor.\n\nThrough electromagnetic induction, the rotating magnetic field induces a current in the conductors in the rotor, which in turn sets up a counterbalancing magnetic field that causes the rotor to turn in the direction the field is rotating. The rotor must always rotate slower than the rotating magnetic field produced by the polyphase electrical supply; otherwise, no counterbalancing field will be produced in the rotor.
334381
http://www.karun3.com/technical/?item=7\nhttp://www.karun3.com/related%5Finfo/about%5Fhydro/hydropower%5Fmachinery/