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Intelligent Metering Device and Revenue Meter
Intelligent Metering Device and Revenue Meter

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Practical realization of propulsion unit with low voltage permanent
Practical realization of propulsion unit with low voltage permanent

... The PMSM from the company TG drives manufactured according to required parameters was used for the laboratory model of the AC drive because in addition to verification of control methods will be used this machine in the propulsion unit of the small electric car. Construction solution used PMSM utili ...
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... The choice between a single-phase and a three-phase output is solely dependent on the kind of application to be powered. Singlephase generators are best suited for single-phase output whereas a three-phase generator can easily provide both single- and threephase power. If all your appliances operate ...
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... The final section of the VFD is referred to as an “inverter.” The inverter contains transistors that deliver power to the motor. The “Insulated Gate Bipolar Transistor” (IGBT) is a common choice in modern VFDs. The IGBT can switch on and off several thousand times per second and precisely control th ...
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... The majority of ammeters are either connected in series with the circuit carrying the current to be measured (for small fractional amperes), or have their shunt resistors connected similarly in series. In either case, the current passes through the meter or (mostly) through its shunt. They must not ...
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... (with T the temperature) sets the width of current pulses associated with the transfer of individual electrons. The second time scale 2  e=I sets the spacing of the pulses. Let ! be the characteristic frequency of a particular realization of the fluctuating phase. For the low-frequency approximati ...
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Electricity and Power Supplies - Chapter #4 - Amy Hissom
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... Backplane system — A form factor in which there is no true motherboard. Instead, motherboard components are included on an adapter card plugged into a slot on a board called the backplane. Brownouts — Temporary reductions in voltage, which can sometimes cause data loss. BTX (Balanced Technology Exte ...
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... • DC voltages are usually lower, and therefore safer (e.g., 24V). • DC inputs are very fast, AC inputs require a longer on-time. • DC voltages can be connected to more electrical systems. • AC signals are more immune to noise than DC. • AC power is easier and less expensive to supply to equipment. • ...
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... The Open circuit characteristics or the OCC are in actual the magnetization characteristics of the m/c. In practice we should be comparing the flux and the mmf. Now the field current can give us a measure of the mmf while the EMF Ea can give us a measure of the flux so long as the speed remains cons ...
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Voltage optimisation

Voltage optimisation is a term given to the systematic controlled reduction in the voltages received by an energy consumer to reduce energy use, power demand and reactive power demand. While some voltage 'optimisation' devices have a fixed voltage adjustment, others electronically regulate the voltage automatically.Voltage optimisation systems are typically installed in series with the mains electrical supply to a building, allowing all its electrical equipment to benefit from an optimised supply.
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