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Operating Instructions VLT AutomationDrive FC 301/302
Operating Instructions VLT AutomationDrive FC 301/302

AH292
AH292

... indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be ...
Brief Operating Description: Longer Motor Life Starts with a Switch
Brief Operating Description: Longer Motor Life Starts with a Switch

... environmental conditions. ...
48-VDC Battery Powered Inverter Power Stage
48-VDC Battery Powered Inverter Power Stage

... The speed enhancement circuit comprises of Q7 and D6. The turnoff gate current of each MOSFET passes through the individual gate resistors (R20 through R24) and then combines into the BJT Q7. D6 is added to bypass R2 and provide sufficient base current for the BJT Q7 for rapidly turning it on. The V ...
07882-000 TX1
07882-000 TX1

NGG NGB Circuit Breakers File size 1.1MB
NGG NGB Circuit Breakers File size 1.1MB

Coupled electromagnetic and structural analysis of support
Coupled electromagnetic and structural analysis of support

... designed to reduce the operational fuel costs through a serial hybrid powertrain. One of the main components of such a powertrain is the main rotor electric drive. The main limiting factor of using electrical machines for aerospace propulsion however is the limited torque density of electrical machi ...
Magnetic Saturation Effect of the Iron Core in Current Transformers
Magnetic Saturation Effect of the Iron Core in Current Transformers

... are determined by the iron core design because the iron core is saturated above a certain magnetic flux density. In particular, when a large current, such as a current surge, is input into a CT, the iron core becomes saturated and the induced electromotive force in the secondary winding fluctuates s ...
O M S P
O M S P

measuring instruments
measuring instruments

PHD main
PHD main

... In present technology quite common task is to control position, or rotation angle of the given element. In the case of linear position movement, linear motors or standard electrical motors with mechanical equipment are used. Usually control of rotation angle is accomplished by electrical motors with ...
Installation and Maintenance Instruction
Installation and Maintenance Instruction

... 4. Various lagging thickness are available.  Note that each RULMECA motorized pulley for a three-phase power supply uses an asynchronous squirrel cage induction motor with about 5% slip. In a no load condition, motor RPM is nearly equal to “synchronous speed” RPM. The slip rate is dependent on powe ...
Chapter 2 - Sacramento - California State University
Chapter 2 - Sacramento - California State University

A Lecture on Improve Power Quality Converters
A Lecture on Improve Power Quality Converters

... Input: V1  160  270VRMS , 50Hz, Single-Phase AC Supply Output: Vo  98  132V adjustable with nominal value of 120V , Po  2.6kW Output voltage-ripple less than 2% Switching frequency f s  ( s / 2 )  50kHz Design parameters for DCM mode: Transformer turn ratio (n) 1:1, L1  1500H , L 2  4.3 ...
22 05 13 Electrical Requirements for Plumbing Equipment
22 05 13 Electrical Requirements for Plumbing Equipment

Chapter 25
Chapter 25

Prony Analysis for Power System Transient
Prony Analysis for Power System Transient

Basic Controls, 1-4 Contactors and Control Relays
Basic Controls, 1-4 Contactors and Control Relays

... To reverse the direction of a motor, an arrangement of two contactors can be made, with each contactor dedicated to either forward or reverse direction. These contactors may then serve the same purpose as the Cam Switch module, except they are operated by way of external circuits. Figure 1-16 shows ...
SC900 Manual
SC900 Manual

... The drive is capable of direct line operation. All units are fully isolated and do not require external isolation transformers. Also, the inrush current on the connection to the line is internally limited to a safe level for the drive. There are no voltage selection or ranging switches required to o ...
19/23-5SS
19/23-5SS

Multi-field Coupling Simulation and Experimental Study on
Multi-field Coupling Simulation and Experimental Study on

FM7/FM9 - Fagor Automation
FM7/FM9 - Fagor Automation

IntelliMotor ITM-23Q Hardware Manual ®
IntelliMotor ITM-23Q Hardware Manual ®

3. Basic requirements for the AC Drives
3. Basic requirements for the AC Drives

... Last update : 2017-05-06 ...
technical report iec tr 60909-1
technical report iec tr 60909-1

< 1 ... 15 16 17 18 19 20 21 22 23 ... 226 >

Induction motor



An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.Three-phase squirrel-cage induction motors are widely used in industrial drives because they are rugged, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFDs) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Squirrel cage induction motors are very widely used in both fixed-speed and variable-frequency drive (VFD) applications. Variable voltage and variable frequency drives are also used in variable-speed service.
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