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Energy Management
Energy Management

... display unit. The same unit can be used either as a DIN-rail mounting or a panel mounting energy meter. This general purpose threephase energy meter is suitable for both active and reactive energy metering for cost allocation but also for main electrical parameter measurement and retransmission (tra ...
Noise-resistant, Ultra-fast Memory Recorder High Speed, Multichannel and Isolated
Noise-resistant, Ultra-fast Memory Recorder High Speed, Multichannel and Isolated

... address ...
PS-6 PS-8 Power Supplies
PS-6 PS-8 Power Supplies

... optional plug-in PS-EXP module the unit supports (8) Class “B” or (4) Class “A” Notification Appliance Circuits. Additionally, an auxiliary power output of 2.5 Amps (disconnected upon AC power loss or an alarm condition) or up to 0.240 A of constant power on the PS-8 and 0.075 A of constant power on ...
EEAP 245_Due: February 2, 1998
EEAP 245_Due: February 2, 1998

... Figure 7 shows a component which we have not used in the course so far, a capacitor. An important feature of an oscilloscope probe is the variable capacitor placed across the 9MegOhm resistor. This variable capacitor can be adjusted to ensure that high frequency waveforms are not distorted. The eff ...
V BE
V BE

2. about the power-tek generator
2. about the power-tek generator

... The POWER-TEK is a sophisticated electronic device and should be treated accordingly. When selecting the operating environment for the POWER-TEK, don’t think of it in the same terms as other equipment that works with it, e.g. batteries, diesel generators, motor generators, washing machines, etc. It ...
Power MOSFET failures in mobile PMUs: Causes and design
Power MOSFET failures in mobile PMUs: Causes and design

POWER PAC 300 POWER PAC 200
POWER PAC 300 POWER PAC 200

dsp based implementation of field oriented control of three
dsp based implementation of field oriented control of three

MAX4104/MAX4105/MAX4304/MAX4305 740MHz, Low-Noise, Low-Distortion Op Amps in SOT23-5 General Description
MAX4104/MAX4105/MAX4304/MAX4305 740MHz, Low-Noise, Low-Distortion Op Amps in SOT23-5 General Description

... on dual power supplies ranging from ±3.5V to ±5.5V and require only 20mA of supply current. The MAX4104/MAX4304/MAX4105/MAX4305 are optimized for minimum closed-loop gains of +1V/V, +2V/V, +5V/V and +10V/V (respectively) with corresponding -3dB bandwidths of 880MHz, 730MHz, 430MHz, and 350MHz. Each ...
1 CMOS Logic Gates
1 CMOS Logic Gates

... and a p-type transistor in series, with the p-type inverted to operate from a single-voltage supply, as shown in Fig.1.3. The transfer characteristic of the inverter is also shown. The critical logic voltages, defined at the points on the characteristic where the slope is -1, can be adjusted by chan ...
Distribution of Active and Reactive Energy in a Power Line
Distribution of Active and Reactive Energy in a Power Line

... powers, of the Power factor and distortions are given in it, based on the contemporary power theory, developed in the last years. This theory accounts also the new types of users, causing nonsinusoidal currents and voltages and asymmetric loading of the three-phase network. The evaluation of the sta ...
Document
Document

Magnetizer System - IEA
Magnetizer System - IEA

... basis of a simulation program. The geometry for the magnetizing device is concluded from the theory that a magnetic field line always will be a closed loop. The coil current produces the magnetic field and the same field lines will enter the coil again. An alternative to the construction could consi ...
signal and systems - Kathmandu University
signal and systems - Kathmandu University

... If a signal does not satisfy the above property, then it is called aperiodic signal. Periodic signal are x (t ) or ~ x [ n] . often denoted by a tilde above the function name, for example, ~ The smallest non-zero value of T or N for which the periodicity condition by a CT or DT signal is satisfied i ...
350 Power Amplifier Owners Manual
350 Power Amplifier Owners Manual

... stoves, or other appliances that produce excessive amounts of heat.  Always ensure the 350 heat sinks have adequate ventilation enabling air circulation both above and below.  DO NOT place the 350 directly onto carpeted surfaces.  Avoid exposing the 350 to extremely high or low temperatures.  Th ...
Overcoming Communications Challenges in Software for Monitoring and Controlling Power Systems
Overcoming Communications Challenges in Software for Monitoring and Controlling Power Systems

... An example of how these trends complicate grid control involves load following, which is the problem of matching power generated to power consumed. Classically, load following was implemented regionally, by monitoring line frequency. Since line frequency is uniform throughout any well-connected reg ...
8-bit analog-to-digital converters with differential inputs
8-bit analog-to-digital converters with differential inputs

... When a low is at both CS and RD, an output is applied to the DB0 through DB7 outputs and the interrupt flip-flop is reset. When either the CS or RD inputs return to a high state, the DB0 through DB7 outputs are disabled (returned to the high-impedance state). The interrupt flip-flop remains reset. ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... the PMSM, are injected into the PMSM stator windings, HF currents, idh and iqh, will be generated. To reduce extra losses, vibration, and acoustic noise caused by the HF excitation during normal operation of the drive system, the amplitudes of the injected voltage signals are usually much smaller th ...
Fig. 1.1. Block Diagram of a Brushless Motor Drive System
Fig. 1.1. Block Diagram of a Brushless Motor Drive System

... Eqs.3.1-3.2 also indicates that two current-loop are coupled together. For better dynamic performance, crosscoupling terms (LdId and LqIq) may also be compensated as in Fig. 3.1. When traditional phase current regulators are used, generated back EMF of AC motors when the motor is rotating acts as ...
A Switched-Capacitor DC–DC Converter With High Voltage Gain
A Switched-Capacitor DC–DC Converter With High Voltage Gain

CET
CET

... inability of the UPS equipment to recognize the voltage as a viable source when operating on emergency generators resulting in a gradual discharge of the battery back-up and eventual failure of the connected electronic equipment if the utility source is not restored before the depletion of the batte ...
selecting the right sensor for temperature measurement
selecting the right sensor for temperature measurement

... junctions and circuits, whereas thermistors and RTDs can measure absolute temperatures in a more direct manner. An RTD system may actually cost less than a thermocouple system because it produces a higher level signal and does not require a reference. Thermistors are ideally suited for temperature m ...
Switching Comparison: NexLight
Switching Comparison: NexLight

Data Sheet - Energy Recovery Products
Data Sheet - Energy Recovery Products

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Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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