Model test (sem-II)
... A. directly proportional to the back emf and inversely proportional to the flux B. inversely proportional to the back emf and directly proportional to the flux C. directly proportional to the back emf as well as to the flux D. inversely proportional to the back emf as well as to the flux. ...
... A. directly proportional to the back emf and inversely proportional to the flux B. inversely proportional to the back emf and directly proportional to the flux C. directly proportional to the back emf as well as to the flux D. inversely proportional to the back emf as well as to the flux. ...
Versatile Unified Power Quality Conditioner
... Abstract— This paper presents the study, analysis and practical implementation of a versatile unified power quality conditioner (UPQC), which can be connected in both three-phase three-wire or three-phase four-wire distribution systems for performing the series-parallel power-line conditioning. Thus ...
... Abstract— This paper presents the study, analysis and practical implementation of a versatile unified power quality conditioner (UPQC), which can be connected in both three-phase three-wire or three-phase four-wire distribution systems for performing the series-parallel power-line conditioning. Thus ...
IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE)
... between the turns is indicated by including a resistor (R=100 Ω) across the series capacitance of winding. Similarly, the fault across each winding can be simulated and frequency response is obtained. The frequency response analysis for short circuit fault across adjacent discs of the winding refer ...
... between the turns is indicated by including a resistor (R=100 Ω) across the series capacitance of winding. Similarly, the fault across each winding can be simulated and frequency response is obtained. The frequency response analysis for short circuit fault across adjacent discs of the winding refer ...
ee6401 electrical machines-i
... Power Transformers are used in generating stations or sub stations for transforming voltage at each end of transmission line. They are put in operation during load hours and thrown f during light load hours. These transformers are designed to have maximum efficiency at or near of full load. Normally ...
... Power Transformers are used in generating stations or sub stations for transforming voltage at each end of transmission line. They are put in operation during load hours and thrown f during light load hours. These transformers are designed to have maximum efficiency at or near of full load. Normally ...
Eaton Innovative TechnologyT XT50/100 surge protective device
... but without limiting the generality of the foregoing: (1) The use in combination with any electrical or electronic components, circuits, systems, assemblies, or any other materials or substances; (2) Unsuitability of any product for use in any circuit or assembly. Purchaser’s rights under the warran ...
... but without limiting the generality of the foregoing: (1) The use in combination with any electrical or electronic components, circuits, systems, assemblies, or any other materials or substances; (2) Unsuitability of any product for use in any circuit or assembly. Purchaser’s rights under the warran ...
Principles of Electrical Grounding
... To analyze how an electrical shock occurs and how grounding is applied, you need to look at the circuit involved. Figure 2 illustrates the basic circuit that consists of a source, a transformer or generator for all AC circuits, circuit protection, conductors (R1s), and a load (RL). A short circuit i ...
... To analyze how an electrical shock occurs and how grounding is applied, you need to look at the circuit involved. Figure 2 illustrates the basic circuit that consists of a source, a transformer or generator for all AC circuits, circuit protection, conductors (R1s), and a load (RL). A short circuit i ...
Compact Contactless Power Transfer System for Electric Vehicles
... 2. The capacitances of the resonant capacitors are independent of the output power. 3. If the primary voltage/current is constant, the secondary voltage/current will also be constant regardless of the load change. 4. The theoretical equation for the efficiency can be easily derived. This enables the ...
... 2. The capacitances of the resonant capacitors are independent of the output power. 3. If the primary voltage/current is constant, the secondary voltage/current will also be constant regardless of the load change. 4. The theoretical equation for the efficiency can be easily derived. This enables the ...
Issues to Consider when Substituting Large Power Transformers in
... [4]), the rated MVA is the output power that can be delivered at rated secondary voltage. If the transformer nameplate mentions a certain rated power and if it was designed in conformity with the American standards, the significance is that its primary (connected to the generator) would be able to r ...
... [4]), the rated MVA is the output power that can be delivered at rated secondary voltage. If the transformer nameplate mentions a certain rated power and if it was designed in conformity with the American standards, the significance is that its primary (connected to the generator) would be able to r ...
Excellence in Systems Protection
... Location: Locate the protector on or as close to the service entrance cabinet as possible. It should be shortnippled directly to the service cabinet and located so that the wires used to connect to the bus are as short as possible. (The inductance of the wiring, about 1 micro Henry per meter, result ...
... Location: Locate the protector on or as close to the service entrance cabinet as possible. It should be shortnippled directly to the service cabinet and located so that the wires used to connect to the bus are as short as possible. (The inductance of the wiring, about 1 micro Henry per meter, result ...
Electromagnetic Induction - Goodheart
... Inductors are combined with other components for use in many specific types of circuits. For example, inductors are combined with capacitors to form a wide variety of filter circuits. Adjustable ferrite core inductors are used in radios to tune a circuit by passing or rejecting the specific frequencies ...
... Inductors are combined with other components for use in many specific types of circuits. For example, inductors are combined with capacitors to form a wide variety of filter circuits. Adjustable ferrite core inductors are used in radios to tune a circuit by passing or rejecting the specific frequencies ...
Hammond Manufacturing Line Transformers
... • Sine wave output - total harmonic distortion (THD): 3 % • Units also include a 2nd stage of high frequency filtering on the output - a Hammond Mfg. exclusive. • Operating temperature range of -40 degrees C to +40 degrees C. • Standard 3-wire, grounded plug & receptacle. • Front panel lighted ...
... • Sine wave output - total harmonic distortion (THD): 3 % • Units also include a 2nd stage of high frequency filtering on the output - a Hammond Mfg. exclusive. • Operating temperature range of -40 degrees C to +40 degrees C. • Standard 3-wire, grounded plug & receptacle. • Front panel lighted ...
Voltage Regulation at Sites With Distributed
... Voltage Regulation at Sites With Distributed Generation Nick Hiscock, Terence G. Hazel, Senior Member, IEEE, and Jonathan Hiscock ...
... Voltage Regulation at Sites With Distributed Generation Nick Hiscock, Terence G. Hazel, Senior Member, IEEE, and Jonathan Hiscock ...
Generator Loading, Harmonics Monitoring and
... A better technique is to replace one isolation transformer – instead of bypassing it – with a harmonic mitigating transformer of similar impedance. This modification would provide both cancellation effects (harmonic currents are not phase-shifted through delta/zig-zag-wound transformers) and attenua ...
... A better technique is to replace one isolation transformer – instead of bypassing it – with a harmonic mitigating transformer of similar impedance. This modification would provide both cancellation effects (harmonic currents are not phase-shifted through delta/zig-zag-wound transformers) and attenua ...
Fault Analysis In Transmission System Using Matlab
... To determine the currents resulting from an asymmetrical fault, one must first know the per-unit zero-, positive-, and negative-sequence impedances of the transmission lines, generators, and transformers involved. Three separate circuits are then constructed using these impedances. The individual ci ...
... To determine the currents resulting from an asymmetrical fault, one must first know the per-unit zero-, positive-, and negative-sequence impedances of the transmission lines, generators, and transformers involved. Three separate circuits are then constructed using these impedances. The individual ci ...
Transformer Failure Due to Circuit-Breaker
... BIL but ultimately failed at 162-kV BIL. All six transformers and cables were identical, but only two failed during the vacuum-circuit-breaker switching. The significant difference was that the two failed units had 40 ft of feeder cable while the others had 80 or 100 ft of feeder cable. This short 4 ...
... BIL but ultimately failed at 162-kV BIL. All six transformers and cables were identical, but only two failed during the vacuum-circuit-breaker switching. The significant difference was that the two failed units had 40 ft of feeder cable while the others had 80 or 100 ft of feeder cable. This short 4 ...
battery charging guide
... volt system a better choice in high wind areas. • Wire is expensive if long wire runs are required – 120 volt systems require larger wire compared to 120/240 volt systems. • In these scenarios a 120 volt system may not be the best choice. ...
... volt system a better choice in high wind areas. • Wire is expensive if long wire runs are required – 120 volt systems require larger wire compared to 120/240 volt systems. • In these scenarios a 120 volt system may not be the best choice. ...
Study paper on Lightning and surge protection in Telecom Networks
... microprocessor-based equipment functions with faster operating speeds and lower operating voltage than other equipment, surges and electrical noise classified as nonthreatening are significantly more damaging. A Telecom Service provider can greatly reduce its risk of equipment damage, component degr ...
... microprocessor-based equipment functions with faster operating speeds and lower operating voltage than other equipment, surges and electrical noise classified as nonthreatening are significantly more damaging. A Telecom Service provider can greatly reduce its risk of equipment damage, component degr ...
VI. Wye-Broken-Delta Vt, Ground Overvoltage Protection
... 5% of the winding, near the neutral, does not cause sufficient 60 Hz residual voltage and residual current to operate these relays. Even if fault current magnitudes for ground faults close to the neutral point are negligible in causing any immediate damage, potential severe damage can be caused from ...
... 5% of the winding, near the neutral, does not cause sufficient 60 Hz residual voltage and residual current to operate these relays. Even if fault current magnitudes for ground faults close to the neutral point are negligible in causing any immediate damage, potential severe damage can be caused from ...
CONTENTS
... permanently labeled, and properly prepared by cleaning metal surfaces to bare metal or by the use of serrated bushings. Anodized aluminum must be cleaned to bare metal. The resistance across the bonding point should not be more than 0.1 ohm. If a measurement is required, the method of measurement is ...
... permanently labeled, and properly prepared by cleaning metal surfaces to bare metal or by the use of serrated bushings. Anodized aluminum must be cleaned to bare metal. The resistance across the bonding point should not be more than 0.1 ohm. If a measurement is required, the method of measurement is ...
print version - pdf - Atlantic Coast S Gaugers
... D. When looking at the Specifications wiring diagram, pay attention to male / female. The ACSG Module Standard drawing is a little confusing but has the male / female correct. The silver pin is male but is shorter than the female on the actual connector. Hook up the wiring while the module is upside ...
... D. When looking at the Specifications wiring diagram, pay attention to male / female. The ACSG Module Standard drawing is a little confusing but has the male / female correct. The silver pin is male but is shorter than the female on the actual connector. Hook up the wiring while the module is upside ...
A Review on Load Balancing on Distribution System
... The loop power flow controller consists of series connected inductor and series connected voltage sources inverter [6]. It balancing load between two distribution feeders by transferring load. This system also helpful to connect renewable energy sources to distribution feeder at the time of peak loa ...
... The loop power flow controller consists of series connected inductor and series connected voltage sources inverter [6]. It balancing load between two distribution feeders by transferring load. This system also helpful to connect renewable energy sources to distribution feeder at the time of peak loa ...
Rapid LED NanoCube 28 HQI Retrofit
... When soldering, this will be a problem if your soldering iron does not have a clean, tinned tip (new is best) or does not have enough power – we recommend at least a 50 watt soldering iron. An iron that does not produce enough heat will fail to melt the solder properly. This can result in a cold sol ...
... When soldering, this will be a problem if your soldering iron does not have a clean, tinned tip (new is best) or does not have enough power – we recommend at least a 50 watt soldering iron. An iron that does not produce enough heat will fail to melt the solder properly. This can result in a cold sol ...
An Introduction to SAFETY ANALYZER
... provision for protective earthing or reliance upon installation conditions ...
... provision for protective earthing or reliance upon installation conditions ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... Outdoor insulators are being subjected to various operating conditions and environments. The surface of the insulators is covered by airborne pollutants due to natural or industrial or even mixed pollution [4]. Contamination on the surface of the insulators enhances the chances of flashover[2]. Unde ...
... Outdoor insulators are being subjected to various operating conditions and environments. The surface of the insulators is covered by airborne pollutants due to natural or industrial or even mixed pollution [4]. Contamination on the surface of the insulators enhances the chances of flashover[2]. Unde ...
Reducing Ground Bounce in DC-to-DC Converters
... and greatly reduce the bounce. Any residual bounce voltage that is developed in the cut return line is isolated from the general ground plane. The PCB layout in Figure 10 uses the principle illustrated in Figure 9 to reduce ground bounce. A 2-layer PCB is designed so that the input capacitor and bot ...
... and greatly reduce the bounce. Any residual bounce voltage that is developed in the cut return line is isolated from the general ground plane. The PCB layout in Figure 10 uses the principle illustrated in Figure 9 to reduce ground bounce. A 2-layer PCB is designed so that the input capacitor and bot ...
Single-wire earth return
Single wire earth return (SWER) or single wire ground return is a single-wire transmission line which supplies single-phase electrical power from an electrical grid to remote areas at low cost. Its distinguishing feature is that the earth (or sometimes a body of water) is used as the return path for the current, to avoid the need for a second wire (or neutral wire) to act as a return path. Single-wire earth return is principally used for rural electrification, but also finds use for larger isolated loads such as water pumps. It is also used for high-voltage DC over submarine power cables. Electric single-phase railway traction, such as light rail uses a very similar system. It uses resistors to earth to reduce hazards from rail voltages, but the primary return currents are through the rails.