User Manual
... The purpose of this manual is to explain the installation and operating procedures. This manual must be read carefully before installing and operating the equipment. Keep this manual for future reference. This equipment must be installed by qualified staff and, with the simple advice in this manual, ...
... The purpose of this manual is to explain the installation and operating procedures. This manual must be read carefully before installing and operating the equipment. Keep this manual for future reference. This equipment must be installed by qualified staff and, with the simple advice in this manual, ...
Aalborg Universitet Adjustable Speed Drives
... power for the machine. The converter consists of active and passive components. The size, weight, and volume of the drive are decided by the passive components since they typically contribute to 75% of the weight and volume of the drive. Most popular topology for the low voltage drive is a six-pulse ...
... power for the machine. The converter consists of active and passive components. The size, weight, and volume of the drive are decided by the passive components since they typically contribute to 75% of the weight and volume of the drive. Most popular topology for the low voltage drive is a six-pulse ...
MAX220–MAX249
... The TL431/TL431Aare three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5 volts) and 36 volts with two external resistors These devices have a typical dynamic outpu ...
... The TL431/TL431Aare three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5 volts) and 36 volts with two external resistors These devices have a typical dynamic outpu ...
The effect of voltage dips on wound rotor induction motors used in
... disturbances such as voltage dips. The failure of converters as a result of voltage dips is a problem associated with the use of these drives. The aim of this research is to better understand the stresses on rotor circuit converters as a result of voltage dips at the terminals of the motor. The roto ...
... disturbances such as voltage dips. The failure of converters as a result of voltage dips is a problem associated with the use of these drives. The aim of this research is to better understand the stresses on rotor circuit converters as a result of voltage dips at the terminals of the motor. The roto ...
CLiP® APPLICATION TYPICAL QUESTIONS AND ANSWERS
... a very gradual pressure relief through the stranding of its triggering wire so that personnel replacing the interrupter are not working with a highly pressurized device. 5. Can the CLiP be used outside? Yes, it is designed for indoor or outdoor use. It is rated for temperature ranges from -55 to +40 ...
... a very gradual pressure relief through the stranding of its triggering wire so that personnel replacing the interrupter are not working with a highly pressurized device. 5. Can the CLiP be used outside? Yes, it is designed for indoor or outdoor use. It is rated for temperature ranges from -55 to +40 ...
instruction manual for transformer differential
... Be sure that the relay is hard-wired to earth ground with no smaller than 12 AWG copper wire attached to the ground terminal on the rear of the unit case. When the relay is configured in a system with other devices, it is recommended to use a separate lead to the ground bus from each unit. ...
... Be sure that the relay is hard-wired to earth ground with no smaller than 12 AWG copper wire attached to the ground terminal on the rear of the unit case. When the relay is configured in a system with other devices, it is recommended to use a separate lead to the ground bus from each unit. ...
Line Protection with Overcurrent Relays
... circuits in electric utility and in industrial systems, and on some subtransmission lines where the cost of distance relaying cannot be justified. It is used for primary ground-fault protection on most transmission lines where distance relays are used for phase faults, and for ground back-up protect ...
... circuits in electric utility and in industrial systems, and on some subtransmission lines where the cost of distance relaying cannot be justified. It is used for primary ground-fault protection on most transmission lines where distance relays are used for phase faults, and for ground back-up protect ...
Applying Tungsten Inert Gas (TIG) Welding Techniques
... • 5. When the AC machine does not compensate for the high resistance encountered in the DCRP part of the cycle, the sinewave is unbalanced. • a. One-half of the time the voltage is higher than expected (DCSP), and one-half of the time the voltage is lower than expected (DCRP). ...
... • 5. When the AC machine does not compensate for the high resistance encountered in the DCRP part of the cycle, the sinewave is unbalanced. • a. One-half of the time the voltage is higher than expected (DCSP), and one-half of the time the voltage is lower than expected (DCRP). ...
SECTION – III STEP UP SUBSTATION
... Generator transformer/step up transformer in SHP are liable to be subjected to high temporary over voltages due to load rejection, as well as line capacitance which may remain connected on interconnecting tie line in case of receiving end breaker opening. Basic insulation level on power frequency ov ...
... Generator transformer/step up transformer in SHP are liable to be subjected to high temporary over voltages due to load rejection, as well as line capacitance which may remain connected on interconnecting tie line in case of receiving end breaker opening. Basic insulation level on power frequency ov ...
Power Distribution Systems
... be given to the cost of installation, floor space requirements and possible extra cooling requirements as well as the initial purchase price. 3. Maximum Service Continuity: The degree of service continuity and reliability needed will vary depending on the type and use of the facility as well as the ...
... be given to the cost of installation, floor space requirements and possible extra cooling requirements as well as the initial purchase price. 3. Maximum Service Continuity: The degree of service continuity and reliability needed will vary depending on the type and use of the facility as well as the ...
4g magnet power supply
... powering superconducting magnets. It is a true four-quadrant power supply – meaning it is capable of operating with positive current / positive voltage (sourcing power), positive current / negative voltage (sinking power), negative current / positive voltage (sinking power), and negative current / n ...
... powering superconducting magnets. It is a true four-quadrant power supply – meaning it is capable of operating with positive current / positive voltage (sourcing power), positive current / negative voltage (sinking power), negative current / positive voltage (sinking power), and negative current / n ...
4000 Series Maintenance Manual
... The vehicle battery supplies excitation to the field coil (rotor coil) through the regulator and brushes, to create a magnetic field around the rotor and through the stator. When the rotor is set in motion, the moving magnetic field induces an alternating current (AC) in the stator windings. This ou ...
... The vehicle battery supplies excitation to the field coil (rotor coil) through the regulator and brushes, to create a magnetic field around the rotor and through the stator. When the rotor is set in motion, the moving magnetic field induces an alternating current (AC) in the stator windings. This ou ...
K8AC-H Digtal Heater Element Burnout Detector
... with cyclic or phase control heaters (performed unnecessary operations). Generally, heater burnouts could not be detected even by the heater burnout detection function of power regulators (phase control devices) when multiple heaters were connected. Also, burnout detection was not accurate when temp ...
... with cyclic or phase control heaters (performed unnecessary operations). Generally, heater burnouts could not be detected even by the heater burnout detection function of power regulators (phase control devices) when multiple heaters were connected. Also, burnout detection was not accurate when temp ...
PHASE-COMPARISON CARRIER-PILOT RELAYS
... These instructions do not purport to cover all details or variations in equipment nor to provide for every possible further information be desired contingency to be met in connection with installation, operation or maintenance. Should or should particular problems arise which are not covered suffici ...
... These instructions do not purport to cover all details or variations in equipment nor to provide for every possible further information be desired contingency to be met in connection with installation, operation or maintenance. Should or should particular problems arise which are not covered suffici ...
DC Grids for Wind Farms
... DC/AC conversion and Vangen et. al. [22, 23] describes design equations and parameters that influence efficiency. A Dual Bridge Converter with soft switching features for applying a new modulation technique while eliminating the auxiliary circuits used in previous versions, is presented by Torrico-B ...
... DC/AC conversion and Vangen et. al. [22, 23] describes design equations and parameters that influence efficiency. A Dual Bridge Converter with soft switching features for applying a new modulation technique while eliminating the auxiliary circuits used in previous versions, is presented by Torrico-B ...
Mercury-arc valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.