specifications for centrifugal pump and fan applications
... Enclosed Adjustable Frequency Drive Variable Torque HVAC and Pumping Applications NOTE: These specifications apply to Enclosed Adjustable Frequency Drive Controllers, herein referred to as AC Drives. The Power Converter is a component of the AC Drive. To ensure project compatibility, these specifica ...
... Enclosed Adjustable Frequency Drive Variable Torque HVAC and Pumping Applications NOTE: These specifications apply to Enclosed Adjustable Frequency Drive Controllers, herein referred to as AC Drives. The Power Converter is a component of the AC Drive. To ensure project compatibility, these specifica ...
Power Delivery and Leakage Field Control Using an Adaptive
... (e-mail: jrs@cs.washington.edu). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TPEL.2015.2406673 ...
... (e-mail: jrs@cs.washington.edu). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TPEL.2015.2406673 ...
Basics of AC Motors
... Rather than using coils of wire as conductors, conductor bars are die cast into the slots evenly spaced around the cylinder. Most squirrel cage rotors are made by die casting aluminum to form the conductor bars. Siemens also makes motors with die cast copper rotor conductors. These motor exceed NEMA ...
... Rather than using coils of wire as conductors, conductor bars are die cast into the slots evenly spaced around the cylinder. Most squirrel cage rotors are made by die casting aluminum to form the conductor bars. Siemens also makes motors with die cast copper rotor conductors. These motor exceed NEMA ...
an efficient conversion technique enabling utlity
... spaced stators in an attempt to eliminate interference between the stators. It was not very popular since the industry preferred a more compact meter. An engineer at Westinghouse (Paul McGahan) came up with a workable design for polyphase meters. Two single-phase meters were installed in a tall case ...
... spaced stators in an attempt to eliminate interference between the stators. It was not very popular since the industry preferred a more compact meter. An engineer at Westinghouse (Paul McGahan) came up with a workable design for polyphase meters. Two single-phase meters were installed in a tall case ...
Electrical Measurement Safety
... Testing the IGBT outputs for leakage • Measure voltage from earth ground to the inverter’s motor output terminals with the drive powered on and speed set to zero (motor stopped). • If leaky, the voltage will be elevated 3 or 4 times normal. • Perform this measurement on a known good drive to determi ...
... Testing the IGBT outputs for leakage • Measure voltage from earth ground to the inverter’s motor output terminals with the drive powered on and speed set to zero (motor stopped). • If leaky, the voltage will be elevated 3 or 4 times normal. • Perform this measurement on a known good drive to determi ...
MWS Power Fitting - PF and FF
... that plug together, MWS can be installed in a fraction of the time of hardwiring. Plus, MWS offers the advantage of relocating fixtures and outlets in future renovations. ...
... that plug together, MWS can be installed in a fraction of the time of hardwiring. Plus, MWS offers the advantage of relocating fixtures and outlets in future renovations. ...
DS32738741
... standby leakage. However, this technique does not reduce the leakage on critical paths. Thus, it does not help much for practical circuits, whose paths are usually well balanced. Supply voltage scaling developed for switching power reduction, also reduces both active and standby leakage power. But l ...
... standby leakage. However, this technique does not reduce the leakage on critical paths. Thus, it does not help much for practical circuits, whose paths are usually well balanced. Supply voltage scaling developed for switching power reduction, also reduces both active and standby leakage power. But l ...
2 Faults, types and effects 2.1 The development of simple distribution systems
... recommended that this component be given careful consideration from a protection viewpoint when designing network, particularly for continuous process plants such as mineral processing. ...
... recommended that this component be given careful consideration from a protection viewpoint when designing network, particularly for continuous process plants such as mineral processing. ...
Welding Machine - Ardin Caspain Industrial Development LLC
... • Ideally suitable for light, Medium and Heavy duty, all purpose industrial, structural welding applications both within shop floor and at project sites • These welding rectifiers can be also used for DC TIG welding applications by connecting suitable TIG control units (HF 2000 / 2000 AD / 3000 / 30 ...
... • Ideally suitable for light, Medium and Heavy duty, all purpose industrial, structural welding applications both within shop floor and at project sites • These welding rectifiers can be also used for DC TIG welding applications by connecting suitable TIG control units (HF 2000 / 2000 AD / 3000 / 30 ...
Instruction Manual - Spellman High Voltage
... Maintenance may require removing the instrument cover with the power on. Servicing should be done by qualified personnel aware of the electrical hazards. WARNING note in the text call attention to hazards in operation of these units that could lead to possible injury or death. CAUTION notes in the t ...
... Maintenance may require removing the instrument cover with the power on. Servicing should be done by qualified personnel aware of the electrical hazards. WARNING note in the text call attention to hazards in operation of these units that could lead to possible injury or death. CAUTION notes in the t ...
PDF
... inverters (2), (3). The widespread use of SiC devices is expected to dramatically contribute to conserving energy and material resources, and efforts are being made to introduce these devices at an early date. For practical and widespread use of SiC inverters, while it is important to enhance their ...
... inverters (2), (3). The widespread use of SiC devices is expected to dramatically contribute to conserving energy and material resources, and efforts are being made to introduce these devices at an early date. For practical and widespread use of SiC inverters, while it is important to enhance their ...
xenon amp white paper.indd
... XeFlowTM technology the temperature of the amplifier is constantly monitored and its operation and fan speed are optimized according to the temperature of the amplifier. For example, in the VERY RARE case, that a Xenon amplifier begins to reach an unsafe temperature the amplifier slowly re-optimizes ...
... XeFlowTM technology the temperature of the amplifier is constantly monitored and its operation and fan speed are optimized according to the temperature of the amplifier. For example, in the VERY RARE case, that a Xenon amplifier begins to reach an unsafe temperature the amplifier slowly re-optimizes ...
Torque Improvement in Brushed DC Motors by using Four Pole
... Arrangement of winding pattern is important as number of poles is four. Traditionally for core DC motors coil is wound in two ways, one in lap pattern and other in wave pattern. In lap pattern, two ends of coil are terminated to adjacent segments. This pattern would require use of 4 numbers of brush ...
... Arrangement of winding pattern is important as number of poles is four. Traditionally for core DC motors coil is wound in two ways, one in lap pattern and other in wave pattern. In lap pattern, two ends of coil are terminated to adjacent segments. This pattern would require use of 4 numbers of brush ...
T4x-Series Hardware Guide Publication # 843-0149 (Rev B)
... pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordanc ...
... pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordanc ...
A Complete Electrical Hazard Classification
... standards evolved to address the hazards of 60-Hz power that are faced primarily by electricians, linemen, and others performing facility and utility work. This leaves a substantial gap in the management of electrical hazards in Research and Development (R&D) and specialized high voltage and high po ...
... standards evolved to address the hazards of 60-Hz power that are faced primarily by electricians, linemen, and others performing facility and utility work. This leaves a substantial gap in the management of electrical hazards in Research and Development (R&D) and specialized high voltage and high po ...
Complete PDF Edition (573 KB)
... continuous hot-rolling mills in which strips are welded together to form an endless rolling process. Work is proceeding actively on technologies for mini-mills and inline strip processes (ISPs) to reduce the size of installations, and on CALS research (which in the context of iron and steel plants m ...
... continuous hot-rolling mills in which strips are welded together to form an endless rolling process. Work is proceeding actively on technologies for mini-mills and inline strip processes (ISPs) to reduce the size of installations, and on CALS research (which in the context of iron and steel plants m ...
MAXPLUS 211 OPTION SPINDLE AMPLIFIER
... because two of the combinations produce the same basic KE and KT. The reconfiguration of the motor windings from a DELTA to a WYE along with series or parallel connections allows changing the motors KE and KT. This allows the motor and amplifier to produce similar horsepower in the three speed range ...
... because two of the combinations produce the same basic KE and KT. The reconfiguration of the motor windings from a DELTA to a WYE along with series or parallel connections allows changing the motors KE and KT. This allows the motor and amplifier to produce similar horsepower in the three speed range ...
ECE 309 - Clemson University
... basis for calculations, conclusions, recommendations, engineering designs, patents, etc. These notebooks are given to the engineer to generate various types of reports, sometimes after long periods of time. They may be used by others to verify the work, or as a base for additional work. They also ma ...
... basis for calculations, conclusions, recommendations, engineering designs, patents, etc. These notebooks are given to the engineer to generate various types of reports, sometimes after long periods of time. They may be used by others to verify the work, or as a base for additional work. They also ma ...
Brush Type Manual - General Dynamics Mission Systems
... wave excitation, the ripple torque can be reduced by reducing the commutation angle by using a higher number of phases, which also improves motor efficiency. Figure 2 shows the commutation points and output torque for a two phase brushless motor.The commutation angle is 90 electrical degrees which y ...
... wave excitation, the ripple torque can be reduced by reducing the commutation angle by using a higher number of phases, which also improves motor efficiency. Figure 2 shows the commutation points and output torque for a two phase brushless motor.The commutation angle is 90 electrical degrees which y ...
Electrification
Electrification is the process of powering by electricity and is usually associated with changing over from another power source. The broad meaning of the term, such as in the history of technology and economic history, usually applies to a region or national economy. Broadly speaking, electrification was the build out of the electrical generating and distribution systems which occurred in Britain, the United States, and other countries from the mid-1880s until around 1950 and is in progress in rural areas in some developing countries. This included the change over from line shaft and belt drive using steam engines and water power to electric motors.The electrification of particular sectors of the economy is called by terms such as factory electrification, household electrification, rural electrification or railway electrification. It may also apply to changing industrial processes such as smelting, melting, separating or refining from coal or coke heating or chemical processes to some type of electric process such as electric arc furnace, electric induction or resistance heating or electrolysis or electrolytic separating.Electrification was called ""the greatest engineering achievement of the 20th Century"" by the National Academy of Engineering.