PFCI 100 115 HF
... All specifications are typical, 25°C ambient , with nominal input voltage and underfull output load conditions, unless otherwise stated.It is recommended to protect the input by fuses or other protection devices. Fuses are never supplied internally, and without them, severe damage or even fire can o ...
... All specifications are typical, 25°C ambient , with nominal input voltage and underfull output load conditions, unless otherwise stated.It is recommended to protect the input by fuses or other protection devices. Fuses are never supplied internally, and without them, severe damage or even fire can o ...
Poor input power factor
... High motor THDi at low loads or low frequency. CMV stress on motor winding due to input transformer (x1.5) Potential torsional resonance between motor & capacitors Limited starting performance & dynamic response. (Not used for conveyors, cranes, mills, …etc.) Power Electronics España S.L. © res ...
... High motor THDi at low loads or low frequency. CMV stress on motor winding due to input transformer (x1.5) Potential torsional resonance between motor & capacitors Limited starting performance & dynamic response. (Not used for conveyors, cranes, mills, …etc.) Power Electronics España S.L. © res ...
advent of harmonic filters
... It allows for a concept that may not be overloaded. The compensating currents created by a 3 phase Insulated Gate Bipolar Transistor (IGBT) inverter bridge that is able to generate any given voltage waveform with PWM (pulse width modulation) technology. The IGBT Bridge uses a DC voltage source real ...
... It allows for a concept that may not be overloaded. The compensating currents created by a 3 phase Insulated Gate Bipolar Transistor (IGBT) inverter bridge that is able to generate any given voltage waveform with PWM (pulse width modulation) technology. The IGBT Bridge uses a DC voltage source real ...
A Three-Phase Multilevel Hybrid Switched
... multiplier circuits are often employed due to robustness and simple operation. With the increase of the power load, the use of three-phase converters becomes necessary ...
... multiplier circuits are often employed due to robustness and simple operation. With the increase of the power load, the use of three-phase converters becomes necessary ...
Slides
... This results in lower cost, and smaller size and weight. The key disadvantage is loss of electrical isolation between the voltage levels. This can be an important safety consideration when a is large. For example in stepping down 7160/240 V we do not ever want 7160 on the low side! ...
... This results in lower cost, and smaller size and weight. The key disadvantage is loss of electrical isolation between the voltage levels. This can be an important safety consideration when a is large. For example in stepping down 7160/240 V we do not ever want 7160 on the low side! ...
Series MH60 - hitek power supplies
... The Series MH60 meets the requirements of the Low Voltage Directive (LVD), 2006/95/EC, by complying with BS EN61010 when it is installed as a component part of compliant equipment. It is CE marked accordingly. RoHS: The Series MH60 meets the requirements of EU Directive 2002/95/EC on the Restriction ...
... The Series MH60 meets the requirements of the Low Voltage Directive (LVD), 2006/95/EC, by complying with BS EN61010 when it is installed as a component part of compliant equipment. It is CE marked accordingly. RoHS: The Series MH60 meets the requirements of EU Directive 2002/95/EC on the Restriction ...
Harmonics / Order no. h Percantage of fundamental voltage
... loads by power electronic components, the proportion of system perturbations such as flicker and harmonics has largely increased in recent years. The quality of the product “electrical energy” at the transition point is precisely regulated for producers, consumer ends and the distribution network pr ...
... loads by power electronic components, the proportion of system perturbations such as flicker and harmonics has largely increased in recent years. The quality of the product “electrical energy” at the transition point is precisely regulated for producers, consumer ends and the distribution network pr ...
1.1 Single-phase power supplies
... drive systems, the dc drive offers a wider speed range and higher starting torque. However, purchase and maintenance costs for dc motors are high, while the cost of power electronic devices has been dropping year after year. Most dc drives use the six-pulse rectifier shown in Fig. Large drives may e ...
... drive systems, the dc drive offers a wider speed range and higher starting torque. However, purchase and maintenance costs for dc motors are high, while the cost of power electronic devices has been dropping year after year. Most dc drives use the six-pulse rectifier shown in Fig. Large drives may e ...
Line Diagrams And The Per Unit System
... is a simplified notation for representing a three-phase power system. Electrical elements such as circuit breaker, transformer, capacitors, bus bars, and conductors are shown by standized schematic symbols. Instead of representing each of three phases with a separate line or terminal, only one condu ...
... is a simplified notation for representing a three-phase power system. Electrical elements such as circuit breaker, transformer, capacitors, bus bars, and conductors are shown by standized schematic symbols. Instead of representing each of three phases with a separate line or terminal, only one condu ...
Metering all your needs
... > Protection against fraudulent token attacks Delayed reconnection > In rush current protection of utility assets > Protects appliances from surge due to load shedding ...
... > Protection against fraudulent token attacks Delayed reconnection > In rush current protection of utility assets > Protects appliances from surge due to load shedding ...
APS-7000 Series
... Output Range, Frequency, Waveform (Sine Wave Only); On Phase, Off Phase, Term Jump Count (0 ~ 255) jump-to, Branch 1, Branch 2, Trigger Output ...
... Output Range, Frequency, Waveform (Sine Wave Only); On Phase, Off Phase, Term Jump Count (0 ~ 255) jump-to, Branch 1, Branch 2, Trigger Output ...
In radio and television broadcasting (as well as in amateur radio) the
... system. It is the ratio of the square root of the Reflected Power to the square root of the Forward Power. This ratio is called GAMMA in several texts and can be mathematically represented as: GAMMA = sqrt( (Reflected Power / Forward Power) ) Thus, to find the VSWR of an antenna system, one needs to ...
... system. It is the ratio of the square root of the Reflected Power to the square root of the Forward Power. This ratio is called GAMMA in several texts and can be mathematically represented as: GAMMA = sqrt( (Reflected Power / Forward Power) ) Thus, to find the VSWR of an antenna system, one needs to ...
Power factor
In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number in the closed interval of -1 to 1. A power factor of less than one means that the voltage and current waveforms are not in phase, reducing the instantaneous product of the two waveforms (V x I). Real power is the capacity of the circuit for performing work in a particular time. Apparent power is the product of the current and voltage of the circuit. Due to energy stored in the load and returned to the source, or due to a non-linear load that distorts the wave shape of the current drawn from the source, the apparent power will be greater than the real power. A negative power factor occurs when the device (which is normally the load) generates power, which then flows back towards the source, which is normally considered the generator.In an electric power system, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. Because of the costs of larger equipment and wasted energy, electrical utilities will usually charge a higher cost to industrial or commercial customers where there is a low power factor.Linear loads with low power factor (such as induction motors) can be corrected with a passive network of capacitors or inductors. Non-linear loads, such as rectifiers, distort the current drawn from the system. In such cases, active or passive power factor correction may be used to counteract the distortion and raise the power factor. The devices for correction of the power factor may be at a central substation, spread out over a distribution system, or built into power-consuming equipment.