MOVITRAC® B / System Manuals / 2006-06
... The frequency inverters from SEW-EURODRIVE operate AC motors. These motors must be suitable for operation with frequency inverters. Do not connect any other loads to the frequency inverters. Frequency inverters are devices for stationary installation in control cabinets. Adhere to all instructions r ...
... The frequency inverters from SEW-EURODRIVE operate AC motors. These motors must be suitable for operation with frequency inverters. Do not connect any other loads to the frequency inverters. Frequency inverters are devices for stationary installation in control cabinets. Adhere to all instructions r ...
Coordinated Facility Protection - West Australian Power Protection
... faults on transmission lines. It is important to note that lightning does not need to directly strike a power line for such damage to occur; a strike several hundred meters away can induce large damaging transients, even to underground cables. It is estimated that 70 to 85% of all transients are gen ...
... faults on transmission lines. It is important to note that lightning does not need to directly strike a power line for such damage to occur; a strike several hundred meters away can induce large damaging transients, even to underground cables. It is estimated that 70 to 85% of all transients are gen ...
PD62GB10_11_Digital multimeters and power analyzers DMG series
... The multimeter housing is made to DIN standards. The width is just 4 modules. ...
... The multimeter housing is made to DIN standards. The width is just 4 modules. ...
chapter quiz
... FIGURE 14-11 A zener diode is commonly used inside automotive computers to protect delicate electronic circuits from high-voltage spike. A 35 volt zener diode will conduct any voltage spike resulting from the discharge of a coil safely to ground through a current-limiting resistor in series with the ...
... FIGURE 14-11 A zener diode is commonly used inside automotive computers to protect delicate electronic circuits from high-voltage spike. A 35 volt zener diode will conduct any voltage spike resulting from the discharge of a coil safely to ground through a current-limiting resistor in series with the ...
16 Transformer and Transformer-feeder Protection
... the short-circuited secondary turns. This also varies with the position of the fault, so that the fault current in the transformer primary winding is proportional to the square of the fraction of the winding that is shortcircuited. The effect is shown in Figure 16.2. Faults in the lower third of the ...
... the short-circuited secondary turns. This also varies with the position of the fault, so that the fault current in the transformer primary winding is proportional to the square of the fraction of the winding that is shortcircuited. The effect is shown in Figure 16.2. Faults in the lower third of the ...
Machines and Stepping Motors
... Common variable-reluctance machines can be categorized into two types: singlysalient and doubly-salient. In both cases, their most noticeable features are that there are no windings or permanent magnets on their rotors and that their only source of excitation consists of stator windings. This can be ...
... Common variable-reluctance machines can be categorized into two types: singlysalient and doubly-salient. In both cases, their most noticeable features are that there are no windings or permanent magnets on their rotors and that their only source of excitation consists of stator windings. This can be ...
MC33814, Two cylinder small engine control IC - Data Sheet
... Powered by SMARTMOS technology, the 33814 delivers a cost-optimized IC solution for managing one and two-cylinder engines. With six drivers, three predrivers, a 5.0 V regulator for the MCU, a protected external sensor supply, and a high level of integration, the IC offers an ideal response to contem ...
... Powered by SMARTMOS technology, the 33814 delivers a cost-optimized IC solution for managing one and two-cylinder engines. With six drivers, three predrivers, a 5.0 V regulator for the MCU, a protected external sensor supply, and a high level of integration, the IC offers an ideal response to contem ...
Circuit Breaker
... The characteristics of LV circuit breakers are given by international standards such as IEC 947. These circuit breakers are often installed in draw-out enclosures that allow removal and interchange without dismantling the switchgear. ...
... The characteristics of LV circuit breakers are given by international standards such as IEC 947. These circuit breakers are often installed in draw-out enclosures that allow removal and interchange without dismantling the switchgear. ...
wdyrc tech sheet
... and H.V. capacitor with an insulated-handle screwdriver before working in high voltage area of equipment compartment. Some types of failures will leave a charge in these capacitors and the discharge could cause a reflex action which could make you injure yourself. ...
... and H.V. capacitor with an insulated-handle screwdriver before working in high voltage area of equipment compartment. Some types of failures will leave a charge in these capacitors and the discharge could cause a reflex action which could make you injure yourself. ...
Power 2 You - Lattice Semiconductor
... circuit board power management functions shown as 3-D blocks in Figure 1-1 and Figure 1-2. This book also provides generalized cost effective solutions for each of these functions that can be customized to meet a circuit board’s specific voltage, current and control environment. For readers viewing ...
... circuit board power management functions shown as 3-D blocks in Figure 1-1 and Figure 1-2. This book also provides generalized cost effective solutions for each of these functions that can be customized to meet a circuit board’s specific voltage, current and control environment. For readers viewing ...
DIGITAL CONTROL OF VOLTAGE REGULATORS FOR FAST
... technique is first introduced to maximize the transient response of the VR and to balance the phase current for multiphase VR under high frequency dynamic load conditions. The VR and its control method is modeled and analyzed in depth for its targeting applications. Secondly, a predictive non-linear ...
... technique is first introduced to maximize the transient response of the VR and to balance the phase current for multiphase VR under high frequency dynamic load conditions. The VR and its control method is modeled and analyzed in depth for its targeting applications. Secondly, a predictive non-linear ...
електроника electronics - Electronics Journal
... symposium. This is a part of very successful collaboration between the Faculty of Electrical Engineering in Banja Luka and the Faculty of Technical Sciences in Novi Sad (Yugoslavia) in several fields and particularly in organization of two related international conferences – International Conference ...
... symposium. This is a part of very successful collaboration between the Faculty of Electrical Engineering in Banja Luka and the Faculty of Technical Sciences in Novi Sad (Yugoslavia) in several fields and particularly in organization of two related international conferences – International Conference ...
Harmonic Analysis of A DFIG for Wind Energy Conversion System
... voltage. This AC voltage injected into the rotor circuit will generate a flux with a frequency ωr if the rotor is standing still. When the rotor is rotating at a speed ωm , the net flux linkage will have a frequency ωs = ωr + ωm . When the wind speed changes, the rotor speed ωm will change and in or ...
... voltage. This AC voltage injected into the rotor circuit will generate a flux with a frequency ωr if the rotor is standing still. When the rotor is rotating at a speed ωm , the net flux linkage will have a frequency ωs = ωr + ωm . When the wind speed changes, the rotor speed ωm will change and in or ...
RF current element design for independent control of current
... high frequency. This requires a parallel transmit system with independent control of the amplitude and phase of the rung currents to enable optimization of B1 field homogeneity (3–5). The recent development of the theory of transmit SENSE (5, 6) and the consequent renewal of interest in multidimensio ...
... high frequency. This requires a parallel transmit system with independent control of the amplitude and phase of the rung currents to enable optimization of B1 field homogeneity (3–5). The recent development of the theory of transmit SENSE (5, 6) and the consequent renewal of interest in multidimensio ...
Electrical power transformer
... are more turns on the secondary winding than in the primary winding in the step-up transformer. In this manner, the voltage induced into the secondary transformer is higher than the one supplied over the primary winding. Due to the standard of conservation of power, the transformer changes from low ...
... are more turns on the secondary winding than in the primary winding in the step-up transformer. In this manner, the voltage induced into the secondary transformer is higher than the one supplied over the primary winding. Due to the standard of conservation of power, the transformer changes from low ...
S225-10-10
... one phase of a three-phase wye (star) or delta circuit. Two regulators connected phase-to-phase in open-delta, or three regulators connected phase-to-phase in closeddelta, can regulate a three-phase, three-wire circuit. When connected in wye, three regulators can regulate a three-phase, four-wire mu ...
... one phase of a three-phase wye (star) or delta circuit. Two regulators connected phase-to-phase in open-delta, or three regulators connected phase-to-phase in closeddelta, can regulate a three-phase, three-wire circuit. When connected in wye, three regulators can regulate a three-phase, four-wire mu ...
Electrical ballast
An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.