8-channel source driver with over-current protection
... outputs, the UDN2987A and UDN2987LW drivers are used as an interface between standard low-level logic and relays, motors, solenoids, LEDs, and incandescent lamps. The device includes thermal shutdown and output transient protection/clamp diodes for use with sustaining voltages to 35 V. In these driv ...
... outputs, the UDN2987A and UDN2987LW drivers are used as an interface between standard low-level logic and relays, motors, solenoids, LEDs, and incandescent lamps. The device includes thermal shutdown and output transient protection/clamp diodes for use with sustaining voltages to 35 V. In these driv ...
MGE Power Management Modules
... tripping > Providing detailed current information for phase balancing and circuit management > Accurately indicating which circuits have available capacity Main Circuit Breaker Monitoring: Distribution panel boards are equipped with 225A main breakers, but typically feed in excess of 500A worth of d ...
... tripping > Providing detailed current information for phase balancing and circuit management > Accurately indicating which circuits have available capacity Main Circuit Breaker Monitoring: Distribution panel boards are equipped with 225A main breakers, but typically feed in excess of 500A worth of d ...
Characteristics of Different Power Systems Neutral Grounding
... Since the system is only, in essence, capacitively coupled to ground through a relatively high impedance, the entire system is displaced above ground as indicated in figure 3b. Figure 3a illustrates the system voltage profile prior to the ground fault condition. The system will remain in this positi ...
... Since the system is only, in essence, capacitively coupled to ground through a relatively high impedance, the entire system is displaced above ground as indicated in figure 3b. Figure 3a illustrates the system voltage profile prior to the ground fault condition. The system will remain in this positi ...
Transmission Cables Overhead/Underground Guidance
... Transmission Power Circuits Transmission circuits can either be oil or gas insulated or a type known as xlpe. Transmission circuits are usually but not always, 3 individual cables per circuit. When a transmission power circuit is identified in your work or development area, then ScottishPower requir ...
... Transmission Power Circuits Transmission circuits can either be oil or gas insulated or a type known as xlpe. Transmission circuits are usually but not always, 3 individual cables per circuit. When a transmission power circuit is identified in your work or development area, then ScottishPower requir ...
Low Cost Digital Panel Meter Designs and Complete
... The circuit board layouts and assembly drawings for both kits are given in Figures 10, 11. The boards are single-sided to minimize cost and simplify assembly. Jumpers are used to allow maximum flexibility. For example, provision has been made for connecting an external clock (Test Point #5). Provisi ...
... The circuit board layouts and assembly drawings for both kits are given in Figures 10, 11. The boards are single-sided to minimize cost and simplify assembly. Jumpers are used to allow maximum flexibility. For example, provision has been made for connecting an external clock (Test Point #5). Provisi ...
Aircraft Systems Design
... necessary for continuous magneto ignition. P-lead(s) are switched to ground to disable the magneto ignition. High quality keyed ignition switches with or without starter feature are readily available at modest cost from common sources of supply, although other types of common switches may be used. A ...
... necessary for continuous magneto ignition. P-lead(s) are switched to ground to disable the magneto ignition. High quality keyed ignition switches with or without starter feature are readily available at modest cost from common sources of supply, although other types of common switches may be used. A ...
BDTIC TLF50211EL 2.2MHz Buck Converter 5V, 500mA, with Enable and Low Quiescent...
... The buck-core is designed with the aim to be reproduced in customer applications (see dashed area in the right picture). Correlated Material Application Board Documentation: TLF50211EL Gerber-Data: On request PCB-Board Ordering number: SP000949234 ...
... The buck-core is designed with the aim to be reproduced in customer applications (see dashed area in the right picture). Correlated Material Application Board Documentation: TLF50211EL Gerber-Data: On request PCB-Board Ordering number: SP000949234 ...
INV375
... leads. The color code is as follows: neutral is GRAY, 120V, 160Hz is VIOLET, and 277V, 160Hz is YELLOW. All remote circuitry is to be wired in accordance with Article 700 of the National Electric Code. Do not exceed the total rating of the INV375SILED. When making connections to the INV375SILED, DO ...
... leads. The color code is as follows: neutral is GRAY, 120V, 160Hz is VIOLET, and 277V, 160Hz is YELLOW. All remote circuitry is to be wired in accordance with Article 700 of the National Electric Code. Do not exceed the total rating of the INV375SILED. When making connections to the INV375SILED, DO ...
Altech/ABL Sursum Miniature Circuit Breakers
... are coupled to the tripping latch pins of the VEA or MA to which they are attached, reliably producing trips at the drop-out voltage and preventing resetting when less than 85% line voltage is present. The Undervoltage Trip is provided with at least 6-inch pigtails of stranded fixture wire for hook- ...
... are coupled to the tripping latch pins of the VEA or MA to which they are attached, reliably producing trips at the drop-out voltage and preventing resetting when less than 85% line voltage is present. The Undervoltage Trip is provided with at least 6-inch pigtails of stranded fixture wire for hook- ...
Wire Sizing Chart
... There are five purposes of a marine electrical panel: • Power distribution • Circuit (wire) protection • Circuit ON/OFF switching • Metering of voltage and amperage (In panels with meters) • Condition Indication (circuit energized) Document 9709 Rev.J ...
... There are five purposes of a marine electrical panel: • Power distribution • Circuit (wire) protection • Circuit ON/OFF switching • Metering of voltage and amperage (In panels with meters) • Condition Indication (circuit energized) Document 9709 Rev.J ...
B235-12083
... beta sites as conciliatory devices to protect underbuilt circuits from dangerous overvoltage conditions. The strong, extra-high energy UX arresters provide two very important functions for this application. First, the arrester serves as a voltage controlled switch to clamp the voltage below 2.0 PU b ...
... beta sites as conciliatory devices to protect underbuilt circuits from dangerous overvoltage conditions. The strong, extra-high energy UX arresters provide two very important functions for this application. First, the arrester serves as a voltage controlled switch to clamp the voltage below 2.0 PU b ...
Review on Fault Diagnosis in Three-Phase
... The bearing current results from voltage pulse overshoot created by the fast-switching IGBT in the VFD. Other reasons of shaft voltage include non-symmetry of motor’s magnetic circuit, supply unbalances, transient conditions and others. Any of these conditions can create bearing currents. Shaft volt ...
... The bearing current results from voltage pulse overshoot created by the fast-switching IGBT in the VFD. Other reasons of shaft voltage include non-symmetry of motor’s magnetic circuit, supply unbalances, transient conditions and others. Any of these conditions can create bearing currents. Shaft volt ...
Moving Towards a More Electric Aircraft
... gearing and associated gear separation forces enhances the use of advanced magnetic bearing systems [5]1, which could be integrated into the internal starter/generator for both the main engine and auxiliary power units. For many years, electrical power for aerospace applications has been generated u ...
... gearing and associated gear separation forces enhances the use of advanced magnetic bearing systems [5]1, which could be integrated into the internal starter/generator for both the main engine and auxiliary power units. For many years, electrical power for aerospace applications has been generated u ...
Hydro-Max™ Hydraulic Brake Booster and Master Cylinder
... 4. Differential Pressure Switch: The differential pressure switch reacts to a loss of master cylinder hydraulic pressure in either side of the split hydraulic system and can illuminate a warning light at the instrument panel. When pressure is lost in either the primary or secondary circuit of the ...
... 4. Differential Pressure Switch: The differential pressure switch reacts to a loss of master cylinder hydraulic pressure in either side of the split hydraulic system and can illuminate a warning light at the instrument panel. When pressure is lost in either the primary or secondary circuit of the ...
Here
... 3.2Over Voltage Fault There may be always a chance of system over voltage due to sudden disconnection of large load. The magnitude of this voltage is higher than its normal level but frequency is same as it was in normal operating condition. Over voltage in the power system cau causes ses an increas ...
... 3.2Over Voltage Fault There may be always a chance of system over voltage due to sudden disconnection of large load. The magnitude of this voltage is higher than its normal level but frequency is same as it was in normal operating condition. Over voltage in the power system cau causes ses an increas ...
Fault tolerance
Fault tolerance is the property that enables a system to continue operating properly in the event of the failure of (or one or more faults within) some of its components. If its operating quality decreases at all, the decrease is proportional to the severity of the failure, as compared to a naively designed system in which even a small failure can cause total breakdown. Fault tolerance is particularly sought after in high-availability or life-critical systems.A fault-tolerant design enables a system to continue its intended operation, possibly at a reduced level, rather than failing completely, when some part of the system fails. The term is most commonly used to describe computer systems designed to continue more or less fully operational with, perhaps, a reduction in throughput or an increase in response time in the event of some partial failure. That is, the system as a whole is not stopped due to problems either in the hardware or the software. An example in another field is a motor vehicle designed so it will continue to be drivable if one of the tires is punctured. A structure is able to retain its integrity in the presence of damage due to causes such as fatigue, corrosion, manufacturing flaws, or impact.Within the scope of an individual system, fault tolerance can be achieved by anticipating exceptional conditions and building the system to cope with them, and, in general, aiming for self-stabilization so that the system converges towards an error-free state. However, if the consequences of a system failure are catastrophic, or the cost of making it sufficiently reliable is very high, a better solution may be to use some form of duplication. In any case, if the consequence of a system failure is so catastrophic, the system must be able to use reversion to fall back to a safe mode. This is similar to roll-back recovery but can be a human action if humans are present in the loop.