Critical Points of Simplified Model for Ferroresonance Phenomenon in Single Phase Power Transformers
... The calculated results dictate a jump up in primary induced voltage V2 from 80.19V to 128.73V due to ferroresonance at supply voltage V1 of 42.59 V. The calculated results dictate a jump down in primary induced voltage V2 from 115.1V to 44.86V due to ferroresonance at supply voltage V1 of 30.42 ...
... The calculated results dictate a jump up in primary induced voltage V2 from 80.19V to 128.73V due to ferroresonance at supply voltage V1 of 42.59 V. The calculated results dictate a jump down in primary induced voltage V2 from 115.1V to 44.86V due to ferroresonance at supply voltage V1 of 30.42 ...
PDF
... The Universal Source Controller – Feed Through (SC-UN-FT) line of lighting control panels provides feed-through wiring flexibility for both new and existing applications. Each Source Controller contains individual control cards that are the industry’s only “true universal” by controlling most load t ...
... The Universal Source Controller – Feed Through (SC-UN-FT) line of lighting control panels provides feed-through wiring flexibility for both new and existing applications. Each Source Controller contains individual control cards that are the industry’s only “true universal” by controlling most load t ...
Neptune 200KW-650KW Load Bank Product Brochure
... generators, regenerative power absorption of inertial motors with reverse power protection of generators and other load bank applications are achieved with the Simplex Neptune Load Bank. The unit capacity range of the Neptune is 200-650KW, resistive, unity power factor. Reactive units (inductive or ...
... generators, regenerative power absorption of inertial motors with reverse power protection of generators and other load bank applications are achieved with the Simplex Neptune Load Bank. The unit capacity range of the Neptune is 200-650KW, resistive, unity power factor. Reactive units (inductive or ...
HSF-1UR - Kepco power supplies
... operating in a parallel configuration causes output current to be shared equally. (See Rack Adapter Manual for additional information on parallel configurations.). For current sharing to work properly the outputs of all paralleled units must be within 250 mV (max) of each other and each unit must be ...
... operating in a parallel configuration causes output current to be shared equally. (See Rack Adapter Manual for additional information on parallel configurations.). For current sharing to work properly the outputs of all paralleled units must be within 250 mV (max) of each other and each unit must be ...
TS Series: 5 kW to 45 kW - Magna
... The high slew rate option solves several limitations inherent in switching power supply design. Rapid voltage transitions require internal electronics to supply the energy to charge and discharge output capacitors. Peak currents internal to the power supply define slew rate; utilizing less capacitan ...
... The high slew rate option solves several limitations inherent in switching power supply design. Rapid voltage transitions require internal electronics to supply the energy to charge and discharge output capacitors. Peak currents internal to the power supply define slew rate; utilizing less capacitan ...
Power Electronics Tutorial (PDF Version)
... The external circuit of the above diagram is usually held at a high potential relative to the control unit. Inductive transmitters are used to support the required potential difference between the two interfaces. Power switching devices are normally selected based on the rating at which they handle ...
... The external circuit of the above diagram is usually held at a high potential relative to the control unit. Inductive transmitters are used to support the required potential difference between the two interfaces. Power switching devices are normally selected based on the rating at which they handle ...
Design and Evaluation of a Modular Resonant Switched
... Based on (9) and (10), a numerical analysis was carried out using MATLAB® (Ver. R2010b) to estimate the efficiency, η, of the total energy extraction as a function of S – the (single) shaded panel location in the chain, and N – the number of panels in the chain. In this analysis the following parame ...
... Based on (9) and (10), a numerical analysis was carried out using MATLAB® (Ver. R2010b) to estimate the efficiency, η, of the total energy extraction as a function of S – the (single) shaded panel location in the chain, and N – the number of panels in the chain. In this analysis the following parame ...
Voltage Sag Protection
... Current inrush following voltage sag Overheating due to current harmonics Copyright © 2012 Rockwell Automation, Inc. All rights reserved. ...
... Current inrush following voltage sag Overheating due to current harmonics Copyright © 2012 Rockwell Automation, Inc. All rights reserved. ...
RA20H8994M 数据资料DataSheet下载
... elements. In the application, which is base station applications and fixed station applications that operate with long term continuous transmission and a higher on-off frequency during transmitting, please consider the derating, the redundancy system, appropriate setting of the maintain period and o ...
... elements. In the application, which is base station applications and fixed station applications that operate with long term continuous transmission and a higher on-off frequency during transmitting, please consider the derating, the redundancy system, appropriate setting of the maintain period and o ...
Advances in Natural and Applied Sciences
... Increase in peak load demand and transfer of power between utilities have emerged for the concern regarding system voltage security (Mehrdad et al 2009). Due to increased open access and increased system loading, power system is vulnerable to voltage instability (Jafari et al 2007).Voltage collapse ...
... Increase in peak load demand and transfer of power between utilities have emerged for the concern regarding system voltage security (Mehrdad et al 2009). Due to increased open access and increased system loading, power system is vulnerable to voltage instability (Jafari et al 2007).Voltage collapse ...
1W Audio Power Amplifier with Shutdown Mode
... The LM4860 possesses two headphone control inputs that disable the amplifier and reduce IDD to less than 1 mA when either one or both of these inputs have a logic-high voltage placed on their pins. Unlike the shutdown function, the headphone control function does not provide the level of current con ...
... The LM4860 possesses two headphone control inputs that disable the amplifier and reduce IDD to less than 1 mA when either one or both of these inputs have a logic-high voltage placed on their pins. Unlike the shutdown function, the headphone control function does not provide the level of current con ...
Solid State Transformer (SST)
... topologies of solid state transformer has been summarized. Finally it is concluded that the conventional transformer which was used widely in industrial applications so far having disadvantages like saturation of core for non linear load, poor voltage regulation, bulkiness. Majority of these problem ...
... topologies of solid state transformer has been summarized. Finally it is concluded that the conventional transformer which was used widely in industrial applications so far having disadvantages like saturation of core for non linear load, poor voltage regulation, bulkiness. Majority of these problem ...
Power Distribution in Data Centers: STARLINE Track Busway, PX
... which result in more usable space in the data center for IT equipment and server racks. In addition, miles of power cables are eliminated when power outlets or drops can be located exactly where they are needed. Monitored Power Usage It is important for data center managers to have the ability to mo ...
... which result in more usable space in the data center for IT equipment and server racks. In addition, miles of power cables are eliminated when power outlets or drops can be located exactly where they are needed. Monitored Power Usage It is important for data center managers to have the ability to mo ...
datasheet
... Measures and records power systems (kW, kVA, kvar) • Energy metering (kAh, kvarh, kWh) • Displays total harmonic distortion (THD-F and THD-R) for voltage and current • Displays individual harmonic values and % for volts and amps through the 50th harmonic • The Max and Min RMS measurements ar ...
... Measures and records power systems (kW, kVA, kvar) • Energy metering (kAh, kvarh, kWh) • Displays total harmonic distortion (THD-F and THD-R) for voltage and current • Displays individual harmonic values and % for volts and amps through the 50th harmonic • The Max and Min RMS measurements ar ...
the asynchronous generator in small power plants
... The asynchronous machine needs "reactive power" to build up the magnetic field. It is known that the reactive power is an apparent power not contributing to the direct energy conversion. The current associated with it, which means the reactive current, causes losses in supply and in the machine. The ...
... The asynchronous machine needs "reactive power" to build up the magnetic field. It is known that the reactive power is an apparent power not contributing to the direct energy conversion. The current associated with it, which means the reactive current, causes losses in supply and in the machine. The ...
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.