SSE Shunt/Static Exciter/Regulators
... VAR/POWER FACTOR CONTROLLER This device is used for parallel operation with the utility to regulate generator power factor or reactive power at a desired level without operator action. It is also used to maintain constant VARs or power factor on synchronous motor applications. ...
... VAR/POWER FACTOR CONTROLLER This device is used for parallel operation with the utility to regulate generator power factor or reactive power at a desired level without operator action. It is also used to maintain constant VARs or power factor on synchronous motor applications. ...
HB1 and VB1 Generator Circuit-Breaker Switchgear
... • Verification of breaker interruption capabilities under consideration of delayed current zero • High reliability of vacuum circuit-breakers due to the low number of moving parts inside the arcing chamber • Extremely high mean-time-to-failure (MTTF) values of the vacuum interrupters • No leakage due ...
... • Verification of breaker interruption capabilities under consideration of delayed current zero • High reliability of vacuum circuit-breakers due to the low number of moving parts inside the arcing chamber • Extremely high mean-time-to-failure (MTTF) values of the vacuum interrupters • No leakage due ...
HIS – Highly Integrated Switchgear up to 550 kV, 63 kA, 5000 A
... the earthing switches are of a pin-type design. They are preferably used in conjunction with disconnecting switches, but can also be supplied as separate modules with their own housing. With the pin-type earthing switch, the earthing pin at earth potential is pushed into the mating contact. Make-pro ...
... the earthing switches are of a pin-type design. They are preferably used in conjunction with disconnecting switches, but can also be supplied as separate modules with their own housing. With the pin-type earthing switch, the earthing pin at earth potential is pushed into the mating contact. Make-pro ...
IGNITION SYSTEMS
... Distributes high voltage spark to each spark plug in correct sequence Times the spark so it occurs as piston is nearing top dead center Varies spark timing with load, speed, and other conditions ...
... Distributes high voltage spark to each spark plug in correct sequence Times the spark so it occurs as piston is nearing top dead center Varies spark timing with load, speed, and other conditions ...
Rotor reactive power is
... Note these both have fundamental inductances that have the same permeance and then some leakage inductance. The mutual inductance has the same permeance as the fundamental of the self indctances: ...
... Note these both have fundamental inductances that have the same permeance and then some leakage inductance. The mutual inductance has the same permeance as the fundamental of the self indctances: ...
Analytical Calculation of Magnetic Field Distribution and Stator Iron
... are predicted while the effect of slotting is ignored. In [21], an analytical model was developed to calculate the eddy current losses, in which the fictious voltage is used to evaluate the losses and the load current effects were taken into account, but the study was only qualitative. In this paper ...
... are predicted while the effect of slotting is ignored. In [21], an analytical model was developed to calculate the eddy current losses, in which the fictious voltage is used to evaluate the losses and the load current effects were taken into account, but the study was only qualitative. In this paper ...
November 2009
... Several text books show how to compute rotor bar and end ring currents, resistances, and conductor losses. From this find rotor resistance of an equivalent rotor phase. Now the equivalent circuit is complete. ...
... Several text books show how to compute rotor bar and end ring currents, resistances, and conductor losses. From this find rotor resistance of an equivalent rotor phase. Now the equivalent circuit is complete. ...
23O,\ i j 234
... A RogoWski coil also does not saturate With high ?elds, and has excellent bandWidth and linearity. Electrostatic shield Winding 120 is Wound around Winding 116 to form an electrostatic shield coil 122. Electrostatic shield coil 122 is used to eliminate the effect of electrostatic coupling from/to co ...
... A RogoWski coil also does not saturate With high ?elds, and has excellent bandWidth and linearity. Electrostatic shield Winding 120 is Wound around Winding 116 to form an electrostatic shield coil 122. Electrostatic shield coil 122 is used to eliminate the effect of electrostatic coupling from/to co ...
SMAW - STUDY GUIDE True/False Indicate whether the statement is
... a. Volts = Watts Amps b. Amps = Watts Volts c. Amps = Watts + Volts d. Watts = Volts Amps ____ 19. The amount of watts put into a weld per inch controls ____. a. the width and depth of the weld bead b. the size of the arc c. the temperature of the arc d. the size of the electrode required ___ ...
... a. Volts = Watts Amps b. Amps = Watts Volts c. Amps = Watts + Volts d. Watts = Volts Amps ____ 19. The amount of watts put into a weld per inch controls ____. a. the width and depth of the weld bead b. the size of the arc c. the temperature of the arc d. the size of the electrode required ___ ...
MAX8709B High-Efficiency CCFL Backlight Controller with SMBus Interface General Description
... range to improve CCFL lifetime. The controller operates over a wide input voltage range of 4.6V to 28V with high power-to-light efficiency. The device also includes safety features that effectively protect against many single-point fault conditions including lamp-out and short-circuit faults. The MA ...
... range to improve CCFL lifetime. The controller operates over a wide input voltage range of 4.6V to 28V with high power-to-light efficiency. The device also includes safety features that effectively protect against many single-point fault conditions including lamp-out and short-circuit faults. The MA ...
Simulation and Analysis of Power System Transients
... determination of frequency characteristics in selected nodes of the network. The network model is derived from differential equations that relate currents and voltages in network nodes according to Kirchhoff’s law. The simulation models are usually based upon equivalent network diagrams derived un ...
... determination of frequency characteristics in selected nodes of the network. The network model is derived from differential equations that relate currents and voltages in network nodes according to Kirchhoff’s law. The simulation models are usually based upon equivalent network diagrams derived un ...
RGch15
... turns of the primary coil Np and of the secondary coil Ns. The rule is an idealisation, assuming that all the flux in the magnetic circuit passes through both coils, and that there are negligible drops in p.d. across the resistances of the two coils. The efficiency of a typical transformer can be qu ...
... turns of the primary coil Np and of the secondary coil Ns. The rule is an idealisation, assuming that all the flux in the magnetic circuit passes through both coils, and that there are negligible drops in p.d. across the resistances of the two coils. The efficiency of a typical transformer can be qu ...
26 20 00 Low Voltage Electrical Transmission
... 30 kVA and above: shall be open, self-cooled dry-type, designed for free convection of air through the windings with a 220° C insulation system that will not exceed a 150° C rise at maximum ambient temperature of 40° C. ...
... 30 kVA and above: shall be open, self-cooled dry-type, designed for free convection of air through the windings with a 220° C insulation system that will not exceed a 150° C rise at maximum ambient temperature of 40° C. ...
BDTIC www.BDTIC.com/infineon Resonant LLC Converter: Operation and Design 250W 33Vin 400Vout Design Example
... It can be seen in Figure 2.3 that low Q curves belong to lighter load operation while higher Q curves represent heavier loads. It’s also seen that all Q curves (load conditions) cross at the resonant frequency point (at Fx=1 or fs=fr) and have a unity gain. Figure 2.3 shows that all gain curves has ...
... It can be seen in Figure 2.3 that low Q curves belong to lighter load operation while higher Q curves represent heavier loads. It’s also seen that all Q curves (load conditions) cross at the resonant frequency point (at Fx=1 or fs=fr) and have a unity gain. Figure 2.3 shows that all gain curves has ...
article: linear induction motor
... termed Arago's rotations, which, by manually turning switches on and off, Walter Baily demonstrated in 1879 as in effect the first primitive induction motor.[1][2][3][4] Practical alternating current induction motors seem to have been independently invented by Galileo Ferraris and Nikola Tesla, a wo ...
... termed Arago's rotations, which, by manually turning switches on and off, Walter Baily demonstrated in 1879 as in effect the first primitive induction motor.[1][2][3][4] Practical alternating current induction motors seem to have been independently invented by Galileo Ferraris and Nikola Tesla, a wo ...
AP Revision Guide Ch 15
... turns of the primary coil Np and of the secondary coil Ns. The rule is an idealisation, assuming that all the flux in the magnetic circuit passes through both coils, and that there are negligible drops in p.d. across the resistances of the two coils. The efficiency of a typical transformer can be qu ...
... turns of the primary coil Np and of the secondary coil Ns. The rule is an idealisation, assuming that all the flux in the magnetic circuit passes through both coils, and that there are negligible drops in p.d. across the resistances of the two coils. The efficiency of a typical transformer can be qu ...
Transformer
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Commonly, transformers are used to increase or decrease the voltages of alternating current in electric power applications.A varying current in the transformer's primary winding creates a varying magnetic flux in the transformer core and a varying magnetic field impinging on the transformer's secondary winding. This varying magnetic field at the secondary winding induces a varying electromotive force (EMF) or voltage in the secondary winding. Making use of Faraday's Law in conjunction with high magnetic permeability core properties, transformers can thus be designed to efficiently change AC voltages from one voltage level to another within power networks.Since the invention of the first constant potential transformer in 1885, transformers have become essential for the transmission, distribution, and utilization of alternating current electrical energy. A wide range of transformer designs are encountered in electronic and electric power applications. Transformers range in size from RF transformers less than a cubic centimeter in volume to units interconnecting the power grid weighing hundreds of tons.