Century Pump Newsletter - July 2013
... Water damage from leaking seals is an all-to-common cause of pump motor failure. A leaking pump seal may cause a motor to fail very quickly. Always install a new Viton® or equivalent seal when reassembling a pump or installing a replacement motor. It is important that a new pump seal be installed co ...
... Water damage from leaking seals is an all-to-common cause of pump motor failure. A leaking pump seal may cause a motor to fail very quickly. Always install a new Viton® or equivalent seal when reassembling a pump or installing a replacement motor. It is important that a new pump seal be installed co ...
Slip power recovery systems When are Wound rotor motors
... • Smaller footprint than a MV PWM variable speed drive • Can work with any stator rated voltage. • For constant torque loads it is possible ...
... • Smaller footprint than a MV PWM variable speed drive • Can work with any stator rated voltage. • For constant torque loads it is possible ...
Power Control and Data Log System Design in Loom
... The width of each conducting line in a circuit can be made smaller and smaller as the technology advances. AT24C32 provides 32,768/65,536 bits of serial electrically erasable and programmable read only memory (EEPROM) and operates at 1.8 to 5.5v. The device feature allows up to 8 devices to share a ...
... The width of each conducting line in a circuit can be made smaller and smaller as the technology advances. AT24C32 provides 32,768/65,536 bits of serial electrically erasable and programmable read only memory (EEPROM) and operates at 1.8 to 5.5v. The device feature allows up to 8 devices to share a ...
ECE320-Exam3b-2010-S..
... Problem 3. (40 points) Please read the entire problem and sort out your thoughts before start writing. (a) Explain the principle of a squirrel-cage IM (you need to convince the grader that you understand the principle by using your own words and/or sketches. The flow of your explanation has to be ea ...
... Problem 3. (40 points) Please read the entire problem and sort out your thoughts before start writing. (a) Explain the principle of a squirrel-cage IM (you need to convince the grader that you understand the principle by using your own words and/or sketches. The flow of your explanation has to be ea ...
Project: sun tracker
... * What we used, many of these can be replaced with other equivalent parts ** Recommend that you buy more than listed, as parts can burn out ...
... * What we used, many of these can be replaced with other equivalent parts ** Recommend that you buy more than listed, as parts can burn out ...
Complete Paper
... power factor close to unity, higher speed and better efficiency. The motor operated with higher current harmonic distortion with low loads but lower current harmonic distortion at high loads. There for it is very good to operate the motor at high load up to 85% of its full load. Keywords: Designing ...
... power factor close to unity, higher speed and better efficiency. The motor operated with higher current harmonic distortion with low loads but lower current harmonic distortion at high loads. There for it is very good to operate the motor at high load up to 85% of its full load. Keywords: Designing ...
single phasing, phase reversal, overvoltage, under
... (except than RYB) due to phase reversal motor starts running in anticlockwise (opposite direction from normal) would cause operation and safety problem. Most of three phases motor run opposite phases. This type of protection is used in application like elevators where it would be damaging or dangero ...
... (except than RYB) due to phase reversal motor starts running in anticlockwise (opposite direction from normal) would cause operation and safety problem. Most of three phases motor run opposite phases. This type of protection is used in application like elevators where it would be damaging or dangero ...
Welcome to this training module which looks at the hardware
... So in summary, the main parts of an AC drive are the rectifier, intermediate DC circuit, inverter and control electronics. A single drive is a complete AC drive (frequency converter). A multidrive consists of one rectifier and several inverters. An AC motor can operate in motoring or generating mod ...
... So in summary, the main parts of an AC drive are the rectifier, intermediate DC circuit, inverter and control electronics. A single drive is a complete AC drive (frequency converter). A multidrive consists of one rectifier and several inverters. An AC motor can operate in motoring or generating mod ...
Digital Motion Control System Design
... Current can be sampled in leg of switch or inline with motor phase If sampled in leg of switch a time when all Switches are switched to ground must be allowed Leg sampling will not allow for 100% duty cycle operation Depending on worst case slew rate as much as 10% duty cycle might be lost Sampling ...
... Current can be sampled in leg of switch or inline with motor phase If sampled in leg of switch a time when all Switches are switched to ground must be allowed Leg sampling will not allow for 100% duty cycle operation Depending on worst case slew rate as much as 10% duty cycle might be lost Sampling ...
DSP-Based Field-Oriented Step Motor Control - CACT
... Step motors, as typically driven in industrial applications, can exhibit undesirable behavior such as stepping resonances and skipped steps. However, this is due to the drive method that is used, and is not due to the motor itself. The name "step motor" indicates how the motor is typically driven. S ...
... Step motors, as typically driven in industrial applications, can exhibit undesirable behavior such as stepping resonances and skipped steps. However, this is due to the drive method that is used, and is not due to the motor itself. The name "step motor" indicates how the motor is typically driven. S ...
Application Note
... In the figure above both the controller and the motor have been conventionally assigned a positive pole, which for the controller corresponds to a positive current being generated and for the motor corresponds to the forward sense of rotation. Clearly this is a convention, as neither the controller ...
... In the figure above both the controller and the motor have been conventionally assigned a positive pole, which for the controller corresponds to a positive current being generated and for the motor corresponds to the forward sense of rotation. Clearly this is a convention, as neither the controller ...
Click Here For
... Torque Equation - Expressions for Maximum Torque and Starting Torque - Torque Slip Characteristic – Load characteristics - Equivalent Circuit - Phasor Diagram - Crawling and Cogging -Circle Diagram-No Load and Blocked Rotor Tests-Predetermination of Performance. ...
... Torque Equation - Expressions for Maximum Torque and Starting Torque - Torque Slip Characteristic – Load characteristics - Equivalent Circuit - Phasor Diagram - Crawling and Cogging -Circle Diagram-No Load and Blocked Rotor Tests-Predetermination of Performance. ...
Resistance is the opposition that a substance offers to the flow of
... In general, when the applied voltage is held constant, the current in a direct-current (DC) electrical circuit is inversely proportional to the resistance. If the resistance is doubled, the current is cut in half; if the resistance is halved, the current is doubled. This rule also holds true for mos ...
... In general, when the applied voltage is held constant, the current in a direct-current (DC) electrical circuit is inversely proportional to the resistance. If the resistance is doubled, the current is cut in half; if the resistance is halved, the current is doubled. This rule also holds true for mos ...
G201 STEP MOTOR DRIVE
... The power supply voltage must be between 24 VDC and 80 VDC. The maximum power supply current required is 67% of the motor’s rated phase current. An unregulated power supply may be used as long as the voltage stays between the limits; keep the ripple voltage to 10% or less for best results. The drive ...
... The power supply voltage must be between 24 VDC and 80 VDC. The maximum power supply current required is 67% of the motor’s rated phase current. An unregulated power supply may be used as long as the voltage stays between the limits; keep the ripple voltage to 10% or less for best results. The drive ...
Short questions and answers EE1251 Electrical Machines II 1. Why
... disconnect the starting / auxiliary winding from the supply when the motor reaches about 70% of its synchronous speed. 49. How is the direction of a capacitor start Induction motor be reversed? The direction of rotation can be reversed by interchanging the terminals of either the main winding or the ...
... disconnect the starting / auxiliary winding from the supply when the motor reaches about 70% of its synchronous speed. 49. How is the direction of a capacitor start Induction motor be reversed? The direction of rotation can be reversed by interchanging the terminals of either the main winding or the ...
Prediction of Noise Generated by Electromagnetic Forces
... appropriate strategy for noise control. Three main sources of sound can be identified in induction motors: mechanical noise from bearings and unbalance effects, airflow noise due to the cooling fan and magnetic noise produced by electromagnetic forces in the motor air gaps. The paper describes a pre ...
... appropriate strategy for noise control. Three main sources of sound can be identified in induction motors: mechanical noise from bearings and unbalance effects, airflow noise due to the cooling fan and magnetic noise produced by electromagnetic forces in the motor air gaps. The paper describes a pre ...
Chapter 20-21
... rotor is made to turn by a belt from the engine. The current in the wire coil of the rotor produces a magnetic field inside it on its axis that points horizontally from left to right, thus making north and south poles of the plates at either end. These end plates are made with triangular fingers tha ...
... rotor is made to turn by a belt from the engine. The current in the wire coil of the rotor produces a magnetic field inside it on its axis that points horizontally from left to right, thus making north and south poles of the plates at either end. These end plates are made with triangular fingers tha ...
CHAPTER 11
... The commutator consists of a number of copper segments that are electrically insulated from each other and from the rotor shaft. The brushes are held by springs against the rotating of the commutator so as to make electrical contact and to provide a connection from the rotating coils to the outside ...
... The commutator consists of a number of copper segments that are electrically insulated from each other and from the rotor shaft. The brushes are held by springs against the rotating of the commutator so as to make electrical contact and to provide a connection from the rotating coils to the outside ...
Specifier Guide - Baldor - Baldor Electric Company, a leader in
... Standard motors are designed to operate in an ambient temperature of up to 40 degrees C (104 degrees F) and are supplied with standard high temperature grease . At altitudes greater than 3300 feet, the lower density of the air reduces the motors cooling ability so altitude as well as the ambient tem ...
... Standard motors are designed to operate in an ambient temperature of up to 40 degrees C (104 degrees F) and are supplied with standard high temperature grease . At altitudes greater than 3300 feet, the lower density of the air reduces the motors cooling ability so altitude as well as the ambient tem ...
Brushed DC electric motor
A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed motors were the first commercially important application of electric power to driving mechanical energy,and DC distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field. Depending on the connections of the field to the power supply, the speed and torque characteristics of a brushed motor can be altered to provide steady speed or speed inversely proportional to the mechanical load. Brushed motors continue to be used for electrical propulsion, cranes, paper machines and steel rolling mills. Since the brushes wear down and require replacement, brushless DC motors using power electronic devices have displaced brushed motors from many applications