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Protect 2.33 2.0 - AEG Power Solutions
Protect 2.33 2.0 - AEG Power Solutions

... When phase-neutral voltage of ANY bypass phase is above or below the margins, it is considered as a bypass failure. An alarm is given, but the unit continues in normal mode, but synchronized to bypass (if freq. margins ...
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... inverter has brought something new in engineering society. Now here is a point why resonant inverter is more important than voltage and current source inverter especially for those applications where output power control is needed. A very common term in electrical field is switching loss. In normal ...
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... HVDS project is to reconfigure the existing Low voltage (LT) network as High Voltage Distribution System, wherein the 11kV line is taken as near to the loads as possible and the LT power supply is fed by providing appropriate capacity transformer and minimum length of LT line with an objective to pr ...
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ET 332b AC Electric Machines and Power

... At the end of this course, you will be able to: 1.) Find the voltage current and power in a single phase ac circuit using phasor analysis, 2.) Construct a power triangle for an ac load, 3.) Compute the power factor of an ac load, 4.) Compute the voltages and currents in three-phase delta and wye con ...
Advances in Environmental Biology
Advances in Environmental Biology

... University. The most important contents of this module include of unbalanced voltage principle and its effects on power system equipment. The definition of unbalance voltage is introduced, analyzed and finally the effects of unbalance voltage on operation of adjustable speed drives (ASDs) and induct ...
FSFR-XS Series — Fairchild Power Switch (FPS™) for Half-Bridge Resonant Converters
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... 7. PCB Layout Guidelines: Duty imbalance problems may occur due to the radiated noise from the main transformer, the inequality of the secondary side leakage inductances of main transformer, and so on. This is one of the reasons that the control components in the vicinity of RT pin are enclosed by t ...
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... • Ganged or un-ganged control for capacitor banks and voltage regulating devices. VVO in essence is a non-linear combinatorial optimization problem with the following characteristics: o Integer decision variables – both the switching status of capacitor banks and the tap position of regulation trans ...
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... • Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and defect of semiconductor products at a certain rate is inevitable. Users of Sanken products are requested to take, at their own risk, preventative measures including safety design of the ...
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... alarm functions. Meanwhile, as energy conservation activities gain momentum, there is demand to reduce the size and increase the functionality of the measuring display unit (MDU) breaker, which has a built-in voltage transformer (VT) and current transformer (CT) and is able to monitor energy consump ...
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Standards of Power Quality with reference to the Code of Practice for

... where Ih is the rms current of the hth harmonic current, and I1 is the rms value of the fundamental current. A typical supply voltage waveform at a consumer’s metering point (or point of common coupling) normally doesn’t exceed 5% THD in Hong Kong but for some high-rise commercial buildings, the vo ...
Power Transformer Attenuates Harmonics
Power Transformer Attenuates Harmonics

... We must look elsewhere for the source, not to the generation of power. The harmonics Fig. 2. Waveforms showing harmonics typical generated downin switching devices. stream can find their way back onto the utility lines and affect all power users on the system, and ultimately adversely affect the ope ...
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Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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