Consequences of the voltage stresses imposed on step
... against damage due to fault currents, whether they arise from short-circuit, short-time unbalanced load or out-of-phase conditions. Specifically, the rapid and selective clearance of all kind of faults rendered possible by the use of a generator circuit-breaker helps to avoid expensive secondary dam ...
... against damage due to fault currents, whether they arise from short-circuit, short-time unbalanced load or out-of-phase conditions. Specifically, the rapid and selective clearance of all kind of faults rendered possible by the use of a generator circuit-breaker helps to avoid expensive secondary dam ...
English - SMC ETech
... ●Area output The memory corresponding to the controller Area output terminal ON EtherNet will be activated if the actuator position is within the range specified by "Area 1" and "Area 2" in the step data. ●Data input method It is possible to perform status monitoring, reset alarms and set Step data ...
... ●Area output The memory corresponding to the controller Area output terminal ON EtherNet will be activated if the actuator position is within the range specified by "Area 1" and "Area 2" in the step data. ●Data input method It is possible to perform status monitoring, reset alarms and set Step data ...
MOSFET CURRENT SOURCE GATE DRIVERS AND VOLTAGE REGULATOR MODULES
... encouragement, guidance, and support throughout this thesis project. Their eagerness to share their knowledge, expertise and time is greatly appreciated. In addition, I would like to thank all of my past and present colleagues from the Queen’s Power Group. In particular, I would like to thank Wilson ...
... encouragement, guidance, and support throughout this thesis project. Their eagerness to share their knowledge, expertise and time is greatly appreciated. In addition, I would like to thank all of my past and present colleagues from the Queen’s Power Group. In particular, I would like to thank Wilson ...
PowerFlex 700H and 700S AC Drives, Frames 9...14 Installation
... Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to be carried out by suitably trained personnel in accordance with applicable code of practice. If this equipment is used in a manner not specified by the manufacturer, the ...
... Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to be carried out by suitably trained personnel in accordance with applicable code of practice. If this equipment is used in a manner not specified by the manufacturer, the ...
First Principles of a Gas Discharge Tube (GDT) Primary
... 20 kA 8/20 µs. The 2026-xx-XX series is also available with the mechanical switch grade fail-short mechanism in a variety of lead configurations and is available in RoHS compliant versions. The 2026 series is about 11.5 mm (length) x 8 mm (diameter) without the fail-short mechanism, or with a diamet ...
... 20 kA 8/20 µs. The 2026-xx-XX series is also available with the mechanical switch grade fail-short mechanism in a variety of lead configurations and is available in RoHS compliant versions. The 2026 series is about 11.5 mm (length) x 8 mm (diameter) without the fail-short mechanism, or with a diamet ...
Electrical power transformer
... plant, connecting between the power plant and the transmission lines, acting to increase the voltage very high and decrease the current simultaneously. Therefore, that will help to transport the power to long distance within transmission lines and avoiding the large losses. Then, the power will go t ...
... plant, connecting between the power plant and the transmission lines, acting to increase the voltage very high and decrease the current simultaneously. Therefore, that will help to transport the power to long distance within transmission lines and avoiding the large losses. Then, the power will go t ...
Modeling and Simulation of Transient Fault Response at
... should be dimensioning for future wind farms. An investigation of over and under voltages at the main transformer and the turbines inside Lillgrund wind farm was the main goal. The results will be used in the planning stage of future wind farms when performing insulation coordination and determining ...
... should be dimensioning for future wind farms. An investigation of over and under voltages at the main transformer and the turbines inside Lillgrund wind farm was the main goal. The results will be used in the planning stage of future wind farms when performing insulation coordination and determining ...
High Frequency, High Power Density Integrated
... traditional buck converters to new levels. Silicon based semiconductors are a mature technology and the potential to further push frequency for improved power density is limited. ...
... traditional buck converters to new levels. Silicon based semiconductors are a mature technology and the potential to further push frequency for improved power density is limited. ...
section 15185 - hydronic pumps
... The impeller shall be ASTM B584-836/875 bronze and hydraulically balanced. The impeller shall be dynamically balanced to ANSI Grade G6.3 and shall be fitted to the shaft with a key. The impeller shall be cast by the hydraulically efficient lost foam technique to ensure repeatability of high quality. ...
... The impeller shall be ASTM B584-836/875 bronze and hydraulically balanced. The impeller shall be dynamically balanced to ANSI Grade G6.3 and shall be fitted to the shaft with a key. The impeller shall be cast by the hydraulically efficient lost foam technique to ensure repeatability of high quality. ...
diagnostic repair manual - Generator
... • The National Electrical Code (NEC), Article 250 requires the frame and external electrically conductive parts of the generator to be connected to an approved earth ground and/or grounding rods. This grounding will help prevent dangerous electrical shock that might be caused by a ground fault cond ...
... • The National Electrical Code (NEC), Article 250 requires the frame and external electrically conductive parts of the generator to be connected to an approved earth ground and/or grounding rods. This grounding will help prevent dangerous electrical shock that might be caused by a ground fault cond ...
VLT HVAC Drive Variable Frequency Drive Guide Specification
... closely approximate a sine wave. Motor voltage shall be varied with frequency to maintain desired motor magnetization current suitable for the driven load and to eliminate the need for motor derating. When properly sized, the VFD shall allow the motor to produce full rated power at rated motor volta ...
... closely approximate a sine wave. Motor voltage shall be varied with frequency to maintain desired motor magnetization current suitable for the driven load and to eliminate the need for motor derating. When properly sized, the VFD shall allow the motor to produce full rated power at rated motor volta ...
Aalborg Universitet during Grid Fault
... Modelling has an important role in the research and development of system changes because it allows many difficult questions to be answered. The varieties of challenges that must be addressed in such modelling are not met by any single modelling software program. In addition a huge range of in-house ...
... Modelling has an important role in the research and development of system changes because it allows many difficult questions to be answered. The varieties of challenges that must be addressed in such modelling are not met by any single modelling software program. In addition a huge range of in-house ...
MAX220–MAX249
... Note 2: VREF is defined as the average voltage of VREF1A and VREF1B. REF1B is usually connected to REF1A or GND. VSENSE is defined as VRS+ - VRS-. Note 3: The common-mode range at the low end of 4.5V applies to the most positive potential at RS+ or RS-. Depending on the polarity of VSENSE and the de ...
... Note 2: VREF is defined as the average voltage of VREF1A and VREF1B. REF1B is usually connected to REF1A or GND. VSENSE is defined as VRS+ - VRS-. Note 3: The common-mode range at the low end of 4.5V applies to the most positive potential at RS+ or RS-. Depending on the polarity of VSENSE and the de ...
Definition of Relay Terminology
... should be taken to avoid dropping or hitting the relay. • Under normal use, the relay is designed so that the case will not detach. To maintain initial performance, the case should not be removed. Relay characteristics cannot be guaranteed if the case is removed. • Use of the relay in an atmosphere ...
... should be taken to avoid dropping or hitting the relay. • Under normal use, the relay is designed so that the case will not detach. To maintain initial performance, the case should not be removed. Relay characteristics cannot be guaranteed if the case is removed. • Use of the relay in an atmosphere ...
Voltage Regulator TAPCON® 250
... These Operating Instructions contain detailed information for the safe mounting, transport, commissioning, maintenance, disassembly and simple fault elimination for the TAPCON® 250 voltage controller. They also include safety instructions and general information about the device. This documentation ...
... These Operating Instructions contain detailed information for the safe mounting, transport, commissioning, maintenance, disassembly and simple fault elimination for the TAPCON® 250 voltage controller. They also include safety instructions and general information about the device. This documentation ...
Aalborg Universitet High Voltage Power Converter for Large Wind Turbine Sztykiel, Michal
... relay selective operation has been made, which distinguishes ground faults located at the wind turbine terminals from faults within the protected cables. The obtained results from the computer simulations in EMTDC/PSCAD software show, that the best performance has been achieved by the transformer-le ...
... relay selective operation has been made, which distinguishes ground faults located at the wind turbine terminals from faults within the protected cables. The obtained results from the computer simulations in EMTDC/PSCAD software show, that the best performance has been achieved by the transformer-le ...
SINAMICS Drives
... operation up to modernization, where we offer a high measure of investment security resulting from continuity in the further development of our products and from reducing the number of interfaces to a minimum. ...
... operation up to modernization, where we offer a high measure of investment security resulting from continuity in the further development of our products and from reducing the number of interfaces to a minimum. ...
Stepper motor
A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.Switched reluctance motors are very large stepping motors with a reduced pole count, and generally are closed-loop commutated.