• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Voltage/current dividers
Voltage/current dividers

... right, if RL is attached in parallel with R2, the voltage across R1 doubles. What is the value of RL? From the two expressions for v’R1 ...
TRANSFORMER TYPES Potential Transformers
TRANSFORMER TYPES Potential Transformers

Lesson 3 Electromagnetic Devices and Treansformers File
Lesson 3 Electromagnetic Devices and Treansformers File

... • A transformer that increases the voltage so that the output voltage is greater than the input voltage is a step-up transformer. • In a step-up transformer the number of wire turns on the secondary coil is greater than the number of turns on the primary coil. ...
CSI23SWI - Circuit Specialists
CSI23SWI - Circuit Specialists

... When plugging the unit into a wall outlet,it must be turned off. Place the unit in a dry and well ventilated area. Never touch the unit while it is working. Even though it is designed for high efficiency,the unit will still get hot. If a short circuit occurs while operating the unit,the unit will be ...
EE 328 _lect_04
EE 328 _lect_04

... Note : A decrease in the field circuit resistance will cause the shunt generator to build up faster to a higher voltage, the generator will not build up if the field resistance is greater than or equal the critical resistance RF2 RC ...
Considerations for the Application of Thyristor Controlled Series
Considerations for the Application of Thyristor Controlled Series

... ƒ Reduced voltage fluctuations and voltage imbalance due to load variations In distribution systems, reactive power compensation is typically provided by shunt-connected components, such as SVC and STATCOM devices. Fixed series capacitors are clearly the most economical solution, but their optimal l ...
Positive Input to Negative Output Conversion
Positive Input to Negative Output Conversion

L544 D M1500UPS_EX (Page 1)
L544 D M1500UPS_EX (Page 1)

... due to power sags and keeps equipment from heating up (power supplies require more current when voltage is low). ...
Lab #1: Ohm’s Law (and not Ohm’s Law)
Lab #1: Ohm’s Law (and not Ohm’s Law)

G2PW...10 Voltage monitoring in 3
G2PW...10 Voltage monitoring in 3

... terminals L1-L2-L3 (G2PW115V10) terminals L1-L2-L3 (G2PW230V10) terminals L1-L2-L3 (G2PW400V10) 3~ 173/100V (G2PW115V10) 3~ 345/199V (G2PW230V10) 3~ 600/346V (G2PW400V10) 220kΩ (G2PW115V10) 470kΩ (G2PW230V10) 1MΩ (G2PW400V10) -20% to +30% of UN -30% to +20% of UN III (according to IEC 60664-1) ...
SubDrive
SubDrive

... The CP Water – SubDrive 75 uses state-ofthe-art electronics technology to provide constant water pressure through variable speed control of standard ¾, 1 or 1½ Hp pump ends, adding significant value and performance to Residential & Commercial water systems. ...
SPH 4A - mackenziekim
SPH 4A - mackenziekim

PUB‐NLH‐176  Island Interconnected System Supply Issues and Power Outages  Page 1 of 8 Q. 
PUB‐NLH‐176  Island Interconnected System Supply Issues and Power Outages  Page 1 of 8 Q. 

... more 46/12.5 kV units) and more than two distribution feeders (e.g., the  ...
Power Quality - Portal UniMAP
Power Quality - Portal UniMAP

Electrical Meters, using
Electrical Meters, using

electricity and magnetism - lesson2
electricity and magnetism - lesson2

... means stronger magnetic field  The number of turns in the coil – More turns means stronger magnetic field  The material in the coil – Magnetic materials like iron and steel make the magnetic field stronger ...
Design a simple DC power supply
Design a simple DC power supply

... depending on the application. These phases are created by the physical offset of the original power generator. In contrast to AC there is DC or direct current. DC doesn't alternate the current, it outputs a steady current to be applied to circuits. DC is useful in circuit design because many of the ...
MC-70L Operating Manual
MC-70L Operating Manual

... 1. Be sure that the power source for charging this unit is equipped with a circuit breaker. 2. Securely place the power cord into the back of the MC-70L. Flip the switch on the front to turn on the power. 3. Attach cord of the electric screwdriver to the CB 105 Sub Control Box. Make sure notch in pl ...
Harmonic Injection Technique to Reduce Harmonic
Harmonic Injection Technique to Reduce Harmonic

PowerFlex 4 Sample Specification GENERAL
PowerFlex 4 Sample Specification GENERAL

Auxiliary Power Supply Card for OMB
Auxiliary Power Supply Card for OMB

... acquisition systems with additional power (±15 Vdc at 500 mA) in system configurations where the number of expansion cards exceeds the OMB-DaqBoard-2000 Series standard power capacity. When auxiliary power is required, the OMB-DBK32A is the preferred choice in nearly all OMB-LogBook and OMB-DaqBoard ...
UPS914/915
UPS914/915

... The UPS-914 and UPS-915 are high-performance UPS designed for use with WAVES® IBS, providing back-up power in the event of a loss of the normal utility power source. The UPS-914 is used for 120V systems, and the UPS-915 is used for 230V systems. In the event of a main utility power failure, the UPS ...
Power Electronics Applications
Power Electronics Applications

... The desktop Personal computer PC consumes a power of 500W supplied by the inverter at a sinusoidal voltage of 220V and at a frequency of 50Hz. The battery is required to provide a 15-minutes backup time when the utility power fails. The efficiency of the charger is 80%, the efficiency of the inverte ...
Document
Document

... voltages up to 200V maximum. The new device drives GRAPHIC features an external pre-regulator to generate its • Under-voltage lockout for all channels own supply voltage to ensure that the gate drives • Cross-conduction prevention logic do not exceed 17V even during load dump • High voltage pre-regu ...
Subthreshold Voltage Operation of Benchmark Circuit c6288
Subthreshold Voltage Operation of Benchmark Circuit c6288

... From the graphs, we can infer that the optimum low voltage operating point is 0.4V which is just above the threshold voltage. Circuit still functions properly in subthreshold region and gives comparable energy savings to normal operation mode. More circuits need to be tested to check for subthreshol ...
< 1 ... 973 974 975 976 977 978 979 980 981 ... 1089 >

Three-phase electric power



Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same line to ground voltage because it uses less conductor material to transmit electrical power.The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky, Jonas Wenström and Nikola Tesla in the late 1880s.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report