- SlideBoom
... Working Principle This is fed to a DC Fan through a motor driver IC. The fan speed is proportional to the temperature measured. Standard power supply of 12 volt DC and 5 volt through a regulator are made from a step-down transformer along with a bridge rectifier and filter capacitor. ...
... Working Principle This is fed to a DC Fan through a motor driver IC. The fan speed is proportional to the temperature measured. Standard power supply of 12 volt DC and 5 volt through a regulator are made from a step-down transformer along with a bridge rectifier and filter capacitor. ...
2005 Code Changes
... placed in the test cell. This was a 480 volt, three phase system with an available three phase shortcircuit current of 22,600 symmetrical rms amperes. A non current-limiting overcurrent protective device was the nearest upstream protective device. An arcing fault was initiated in a combination motor ...
... placed in the test cell. This was a 480 volt, three phase system with an available three phase shortcircuit current of 22,600 symmetrical rms amperes. A non current-limiting overcurrent protective device was the nearest upstream protective device. An arcing fault was initiated in a combination motor ...
L.M. Lorilla, T.A. Keim, J.H. Lang, and D.J. Perreault, “Topologies for Future Automotive Generators – Part I: Modeling and Analytics,” 2005 IEEE Vehicle Power and Propulsion Conference, October 2005, pp. 819-830.
... relevant only if the machine is well enough cooled to operate at this loading. As a rule, the inductive contribution to machine reactance is dominant over the resistive component, so armature resistive losses tend to be small compared to load power. In practice, it often is possible to design machin ...
... relevant only if the machine is well enough cooled to operate at this loading. As a rule, the inductive contribution to machine reactance is dominant over the resistive component, so armature resistive losses tend to be small compared to load power. In practice, it often is possible to design machin ...
PDF
... *(Assistant Professor, Department of EEE, S.V.C.E.T, Chittoor, Andhra Pradesh, India) ** (Professor, Department of EEE, S.V.C.E.T, Chittoor, Andhra Pradesh, India ) ...
... *(Assistant Professor, Department of EEE, S.V.C.E.T, Chittoor, Andhra Pradesh, India) ** (Professor, Department of EEE, S.V.C.E.T, Chittoor, Andhra Pradesh, India ) ...
Synchronous Generator Load Angle Measurement and Estimation
... short circuit appears, the load angle estimator sets the maximal load angle value (180° el) and forces the excitation current increasing. This was realized by logical blocks tst_altb (T920), and (T930) and switch (T940) (Figure 4). So, if synchronous generator is connected to an AC system and genera ...
... short circuit appears, the load angle estimator sets the maximal load angle value (180° el) and forces the excitation current increasing. This was realized by logical blocks tst_altb (T920), and (T930) and switch (T940) (Figure 4). So, if synchronous generator is connected to an AC system and genera ...
EPOS2 Module 36/2 Hardware Reference
... equipment. If the machine/apparatus should break down, if it is operated incorrectly, if the control unit breaks down or if the cables break or get disconnected, etc., the complete drive system must return – and be kept – in a safe operating mode. • Be aware that you are not entitled to perform any ...
... equipment. If the machine/apparatus should break down, if it is operated incorrectly, if the control unit breaks down or if the cables break or get disconnected, etc., the complete drive system must return – and be kept – in a safe operating mode. • Be aware that you are not entitled to perform any ...
AH293 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
... 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 ...
... 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 ...
module 1
... centers that are usually cities or towns. This is called the power transmission. In fact power transmission towers and transmission lines are very common sights in rural areas. Modern day power systems are complicated networks with hundreds of generating stations and load centers being interconnecte ...
... centers that are usually cities or towns. This is called the power transmission. In fact power transmission towers and transmission lines are very common sights in rural areas. Modern day power systems are complicated networks with hundreds of generating stations and load centers being interconnecte ...
Capacitor ESR, Equivalent Series Resistance Dissipation factor and
... Although dissipation factor and loss tangent are effectively the same, they take slightly different views which are useful when designing different types of circuit. Normally the dissipation factor is used at lower frequencies, whereas the loss tangent is more applicable for high frequency applicati ...
... Although dissipation factor and loss tangent are effectively the same, they take slightly different views which are useful when designing different types of circuit. Normally the dissipation factor is used at lower frequencies, whereas the loss tangent is more applicable for high frequency applicati ...
DC Generators and Motors
... rotated in a clockwise direction. The initial or starting point is shown at position A. (This will be considered the zero-degree position.) At 0º the armature loop is perpendicular to the magnetic field. The black and white conductors of the loop are moving parallel to the field. The instant the con ...
... rotated in a clockwise direction. The initial or starting point is shown at position A. (This will be considered the zero-degree position.) At 0º the armature loop is perpendicular to the magnetic field. The black and white conductors of the loop are moving parallel to the field. The instant the con ...
Installation Instructions
... preferred positions. If valve does not perform correctly, adjust cams to set actuator travel properly. 7. Drive actuator to desired open position. The cams are adjusted by simply losening the set screw and rotating cam to desired position. When open position is set, tighten the set screw to maintain ...
... preferred positions. If valve does not perform correctly, adjust cams to set actuator travel properly. 7. Drive actuator to desired open position. The cams are adjusted by simply losening the set screw and rotating cam to desired position. When open position is set, tighten the set screw to maintain ...
SPM Synchronous Motor Protection and Control
... GE Digital Energy’s Quality Management System is registered to ISO9001:2008 QMI # 005094 UL # A3775 ...
... GE Digital Energy’s Quality Management System is registered to ISO9001:2008 QMI # 005094 UL # A3775 ...
A. Internal Inductance
... development of the alternating current. In 1890s the newly formed Westinghouse Company experimented with the new form of electricity, the alternating current. This was called alternating current since the current changed direction in synchronism with the generator rotation. Westinghouse Company was ...
... development of the alternating current. In 1890s the newly formed Westinghouse Company experimented with the new form of electricity, the alternating current. This was called alternating current since the current changed direction in synchronism with the generator rotation. Westinghouse Company was ...
Chapter 12 Three-Phase Transformer Design
... The designer must be concerned with the apparent power handling capability, Pt, of the transformer core and winding. The apparent power, Pt, varies with the type of circuit in which the transformer is used. If the current in the rectifier is interrupted, its effective rms value changes. Transformer ...
... The designer must be concerned with the apparent power handling capability, Pt, of the transformer core and winding. The apparent power, Pt, varies with the type of circuit in which the transformer is used. If the current in the rectifier is interrupted, its effective rms value changes. Transformer ...
section 15172
... rejected. 6 pulse, passive filters, and 12-pulse rectifiers are not acceptable and ...
... rejected. 6 pulse, passive filters, and 12-pulse rectifiers are not acceptable and ...
UNIT – 4 Explain the construction of Single phase transformer with
... 10. What are the different tests to be performed on the transformer to find out IRON and COPPER losses in a transformer. ANS: TRANSFORMER TESTS The circuit constants, efficiency and voltage regulation of a transformer at any load and p.f. condition can be predetermined without actually loading the t ...
... 10. What are the different tests to be performed on the transformer to find out IRON and COPPER losses in a transformer. ANS: TRANSFORMER TESTS The circuit constants, efficiency and voltage regulation of a transformer at any load and p.f. condition can be predetermined without actually loading the t ...
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.