Part II: Analysis Methods of Electrical Power Systems CONTENTS
... branches and circuits. As will be seen in the sections that follow, this description will allow the derivation of the network equations. 2.2. Network global modeling: CIM model Electrical power networks are inter-connected and one cannot study part of a system without having a sufficient knowledge o ...
... branches and circuits. As will be seen in the sections that follow, this description will allow the derivation of the network equations. 2.2. Network global modeling: CIM model Electrical power networks are inter-connected and one cannot study part of a system without having a sufficient knowledge o ...
WARNING! - AR - RF Microwave Instrumentation
... power by foldback and VSWR circuits, it is poor practice to power the unit up without a load or an antenna. Even with no drive, "looping" oscillation can result in RF output if the TWTA is operated without a load. The VSWR detection and foldback circuit is provided to protect the tube from progressi ...
... power by foldback and VSWR circuits, it is poor practice to power the unit up without a load or an antenna. Even with no drive, "looping" oscillation can result in RF output if the TWTA is operated without a load. The VSWR detection and foldback circuit is provided to protect the tube from progressi ...
Transformer Failure Due to Circuit-Breaker
... BIL but ultimately failed at 162-kV BIL. All six transformers and cables were identical, but only two failed during the vacuum-circuit-breaker switching. The significant difference was that the two failed units had 40 ft of feeder cable while the others had 80 or 100 ft of feeder cable. This short 4 ...
... BIL but ultimately failed at 162-kV BIL. All six transformers and cables were identical, but only two failed during the vacuum-circuit-breaker switching. The significant difference was that the two failed units had 40 ft of feeder cable while the others had 80 or 100 ft of feeder cable. This short 4 ...
Stakeholder Comparison Comment Rationale Matrix 2011-09-28 AESO AUTHORITATIVE DOCUMENT PROCESS
... protect the electrical network from these faults. ...
... protect the electrical network from these faults. ...
OPERATIONS MANUAL PATRIOT CHARGER
... The Patriot® Charger is user friendly and does not require manual setting for charging or battery maintenance parameters. The product is designed for desk top operation and as an in-vehicle charger/conditioner when used with the appropriate car power adapter. The 6 bay Patriot® charger is design for ...
... The Patriot® Charger is user friendly and does not require manual setting for charging or battery maintenance parameters. The product is designed for desk top operation and as an in-vehicle charger/conditioner when used with the appropriate car power adapter. The 6 bay Patriot® charger is design for ...
Protection Fundamentals - Levine Lectronics and Lectric
... Selection of protective relays requires compromises: ...
... Selection of protective relays requires compromises: ...
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... FIGURE 27-13 A speaker polarity tester can be easily constructed using a 1 1/2-volt battery. To test a speaker, connect the positive (+) lead of the battery to one speaker terminal and the negative (-) lead to the other speaker terminal for just a second and observe the direction the speaker cone m ...
... FIGURE 27-13 A speaker polarity tester can be easily constructed using a 1 1/2-volt battery. To test a speaker, connect the positive (+) lead of the battery to one speaker terminal and the negative (-) lead to the other speaker terminal for just a second and observe the direction the speaker cone m ...
The Bidirectional Control Thyristor (BCT)
... antiparallel. These include Static VAr Compensators, industrial motor drives, soft starters and transformer tap changers in power quality applications. In such high voltage applications several thyristor levels are often required in the valve, each level comprising two thyristors. Conventionally, ea ...
... antiparallel. These include Static VAr Compensators, industrial motor drives, soft starters and transformer tap changers in power quality applications. In such high voltage applications several thyristor levels are often required in the valve, each level comprising two thyristors. Conventionally, ea ...
PSoC® RC Oscillator to Accurately Time Sleep Cycles
... addition of a switch that can connect to GND to discharge the capacitor. During sleep when COSC is charging, P0[0] is configured as a high impedance input. This is equivalent to the switch in Figure 2 being open. After the P0[0] GPIO interrupt wakes the chip from sleep mode, P0[0] is reconfigured as ...
... addition of a switch that can connect to GND to discharge the capacitor. During sleep when COSC is charging, P0[0] is configured as a high impedance input. This is equivalent to the switch in Figure 2 being open. After the P0[0] GPIO interrupt wakes the chip from sleep mode, P0[0] is reconfigured as ...
2002 NEC Code Changes
... characteristics multiplied by the effective primary to secondary voltage ratio must effectively protect the secondary conductors Difficult to use with transformers that have greater than a 1:1 ratio of primary L-L voltage to ...
... characteristics multiplied by the effective primary to secondary voltage ratio must effectively protect the secondary conductors Difficult to use with transformers that have greater than a 1:1 ratio of primary L-L voltage to ...
Meter Design for Power Failure Events
... meter. The MPU can save several milli-amperes of supply current by disabling the CE and the ADC. After the registers are saved, both CE and ADC should be restored to service. This requires that the metering data of the CE be ignored as if it were just starting up, because the CE operation has been d ...
... meter. The MPU can save several milli-amperes of supply current by disabling the CE and the ADC. After the registers are saved, both CE and ADC should be restored to service. This requires that the metering data of the CE be ignored as if it were just starting up, because the CE operation has been d ...
Floating point processor architecture which performs square root by
... the clock rate. These signals are concatenated to A-reg 15 ware square root, these two bits perform a different function; a ‘01’ or a ‘11’ is loaded into these two guard ister 12. In particular, the signals are supplied to stages bit positions depending on the sign of the arithmetic 12A and 12B of A ...
... the clock rate. These signals are concatenated to A-reg 15 ware square root, these two bits perform a different function; a ‘01’ or a ‘11’ is loaded into these two guard ister 12. In particular, the signals are supplied to stages bit positions depending on the sign of the arithmetic 12A and 12B of A ...
TraceNet TCM2 Installation Guide
... This guide, as well as the firmware described in it, is furnished under license and may only be used or copied in accordance with the terms of such license. The information in this guide is furnished for informational use only, is subject to change without notice, and should not be construed as a co ...
... This guide, as well as the firmware described in it, is furnished under license and may only be used or copied in accordance with the terms of such license. The information in this guide is furnished for informational use only, is subject to change without notice, and should not be construed as a co ...
SV92P PCI Soft Modem Chip Set
... Differential input/output: SV92P uses the DIO port to interface with the CSP1035A DAA. The CSP1035A has an integrated line codec and is part of the line interface. The CSP1035A sits on the high voltage side of the modem circuit. It interfaces with the SV92P via a digital isolation barrier connected ...
... Differential input/output: SV92P uses the DIO port to interface with the CSP1035A DAA. The CSP1035A has an integrated line codec and is part of the line interface. The CSP1035A sits on the high voltage side of the modem circuit. It interfaces with the SV92P via a digital isolation barrier connected ...
New Open LED Shunt Protection (LSP) Devices
... supply while maintaining the required level of current. For switch mode power supplies, this range can be quite large. When a linear constant current regulator is used to limit current from a DC source, power dissipation often becomes a limitation. The compliance voltage of the constant current supp ...
... supply while maintaining the required level of current. For switch mode power supplies, this range can be quite large. When a linear constant current regulator is used to limit current from a DC source, power dissipation often becomes a limitation. The compliance voltage of the constant current supp ...
MAX5970 Evaluation Kit Evaluates: General Description Features
... described above after 30s, remove the USB cable from the board and reconnect it. Administrator privileges are required to install the USB device driver on Windows. 9) Follow the directions of the Found New Hardware window to install the USB device driver. Manually specify the location of the device ...
... described above after 30s, remove the USB cable from the board and reconnect it. Administrator privileges are required to install the USB device driver on Windows. 9) Follow the directions of the Found New Hardware window to install the USB device driver. Manually specify the location of the device ...
CERN/EP/ATE/DQ TTCvx _____________________________________________________________________________________
... The A and B inputs are DC-coupled and terminated by Thevenin networks, having a resulting impedance of 50 W. The External Clock input is AC-coupled and then terminated by 50 W. All inputs are biased to ECL "0" level when no input signal is applied. The ECL input signals are in this block shifted to ...
... The A and B inputs are DC-coupled and terminated by Thevenin networks, having a resulting impedance of 50 W. The External Clock input is AC-coupled and then terminated by 50 W. All inputs are biased to ECL "0" level when no input signal is applied. The ECL input signals are in this block shifted to ...
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.