This document discusses different types of electrical meters. It covers principles of operation including electrostatic, electrothermal, and electromagnetic mechanisms. It describes indicating, integrating, and recording meter types and their various constructions as portable or switchboard. Finally, it lists common meter applications such as ammeters, voltmeters, watt meters and their uses in measuring electricity, power, demand and power factor.
In this presentation, i have explain the role of instruments, its working principle with suitable examples.
its application and how a student can learn more about instruments.
Electrical measurement & measuring instruments [emmi (nee-302) -unit-4]Md Irshad Ahmad
AC Potentiometers-Polar type & Co-ordinate type AC potentiometers, application of AC
Potentiometers inelectrical measurement. (4)
(2)Magnetic Measurement-Ballistic galvanometer, Flux meter ,Determination of hysteresis
loop, measurement of iron losses.
In this presentation, i have explain the role of instruments, its working principle with suitable examples.
its application and how a student can learn more about instruments.
Electrical measurement & measuring instruments [emmi (nee-302) -unit-4]Md Irshad Ahmad
AC Potentiometers-Polar type & Co-ordinate type AC potentiometers, application of AC
Potentiometers inelectrical measurement. (4)
(2)Magnetic Measurement-Ballistic galvanometer, Flux meter ,Determination of hysteresis
loop, measurement of iron losses.
Electrical Measurement, Instrumentation and SensorsRidwanul Hoque
Electrical measurements are the methods, devices and calculations used to measure electrical quantities. Measurement of electrical quantities may be done to measure electrical parameters of a system. Electrical measurements are a branch of the science of meteorology. Learn and Enjoy.
ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]Md Irshad Ahmad
(1) Philosophy of Measurement-Methods of measurement, Measurement system
, Classification of instrument systems, Characteristics of instruments & measurement
systems, Errors in measurement & its analysis, Standards.
(2)Analog Measurement of Electrical Quantities-Electrodynamic, Thermocouple,
Electrostatic & Rectifier type ammeters & voltmeters, Electrodynamic wattmeter, Three
Phase wattmeter, Power in three phase systems, Errors & remedies in wattmeter and energy
meter.
Electrical measurement & measuring instruments [emmi (nee-302) -unit-3]Md Irshad Ahmad
Measurement of Parameters-Different methods of measuring low, medium and high resistances, measurement of inductance & capacitance with the help of AC Bridges, Q meter
Electrical measurement & measuring instruments [emmi (nee-302) -unit-2]Md Irshad Ahmad
Instrument Transformers: CT and PT; their errors, Applications of CT and PT in the extension of instrument range, Introduction to measurement of speed, frequency and power factor.(
Permanent Magnet Moving Coil Instrument. The permanent magnet moving coil instrument or PMMC type instrument uses two permanent magnets in order to create stationary magnetic field.
How intelligent infrastructure reduces operating costs and improves patient c...Estellesc
Graeme Robertson, Healthcare Solutions Business Development Director, presented on behalf of Schneider Electric at the recent 1st Saudi Forum for the Design and Planning of Hospitals in Riyadh, held March 3-5, 2013. Download his presentation, "How an Intelligent Infrastructure Reduces Hospital Operating Costs and Improve Patient Care."
Note: You must save or download the presentation to view the embedded videos on slides 5,6,7,8,9, and 12.
Electrical Measurement, Instrumentation and SensorsRidwanul Hoque
Electrical measurements are the methods, devices and calculations used to measure electrical quantities. Measurement of electrical quantities may be done to measure electrical parameters of a system. Electrical measurements are a branch of the science of meteorology. Learn and Enjoy.
ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS [Emmi- (NEE-302) -unit-1]Md Irshad Ahmad
(1) Philosophy of Measurement-Methods of measurement, Measurement system
, Classification of instrument systems, Characteristics of instruments & measurement
systems, Errors in measurement & its analysis, Standards.
(2)Analog Measurement of Electrical Quantities-Electrodynamic, Thermocouple,
Electrostatic & Rectifier type ammeters & voltmeters, Electrodynamic wattmeter, Three
Phase wattmeter, Power in three phase systems, Errors & remedies in wattmeter and energy
meter.
Electrical measurement & measuring instruments [emmi (nee-302) -unit-3]Md Irshad Ahmad
Measurement of Parameters-Different methods of measuring low, medium and high resistances, measurement of inductance & capacitance with the help of AC Bridges, Q meter
Electrical measurement & measuring instruments [emmi (nee-302) -unit-2]Md Irshad Ahmad
Instrument Transformers: CT and PT; their errors, Applications of CT and PT in the extension of instrument range, Introduction to measurement of speed, frequency and power factor.(
Permanent Magnet Moving Coil Instrument. The permanent magnet moving coil instrument or PMMC type instrument uses two permanent magnets in order to create stationary magnetic field.
How intelligent infrastructure reduces operating costs and improves patient c...Estellesc
Graeme Robertson, Healthcare Solutions Business Development Director, presented on behalf of Schneider Electric at the recent 1st Saudi Forum for the Design and Planning of Hospitals in Riyadh, held March 3-5, 2013. Download his presentation, "How an Intelligent Infrastructure Reduces Hospital Operating Costs and Improve Patient Care."
Note: You must save or download the presentation to view the embedded videos on slides 5,6,7,8,9, and 12.
Schneider Electric CEO, Jean-Pascal Tricoire introduces Schneider innovation at every level redefining power and automation for a new world of energy which is more electric, decarbonized, decentralized and digitized ensuring Life Is On everywhere, for everyone and at every moment.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
6. APPLICATIONS
Ammeter
Voltmeter
Watt and Watt-hour Meter
Reactive volt-ampere Meter
Kilovolt-ampere Meter
Demand Meter
Power-Factor Meter
Frequently Meter
Synchroscope
Temperature Meters
7.
8. DESIRED METER CHARACTERISTICS
1. Rugged Mechanism
2. Permanent Calibration
3. Proper Damping
4. Slight sensitivity to stray magnetic fields
9. • Very accurate meters can be built, but in many cases such meters are FRAGILE
and are, therefore, not suitable for commercial work
• There are many things that might cause a meter to become inaccurate with AGE,
the most important being ageing of the iron in the magnetic circuits and friction or
wear of the MOVING PARTS.
• Meters should be DAMPED properly so that their readings are “DEAD BEAT”
• THERE SHOULD BE A VERY LITTLE OSCILLATION OF THE POINTER WHEN
A READING IS DESIRED.
• A certain amount of STRAY MAGNETIC FIELD is practically always present in
powerplants.
• PROPER PRECAUTION IS TAKEN SUCH AS A STRAY FIELD WILL
INTRODUCE A CERTAIN AMOUNT OF ERROR IN THE METER READINGS.
10. PRINCIPLE OF OPERATION
ELECTROSTATIC - the fundamental principle that charged bodies, if of the
same polarity, REPEL each other and, of different polarities, ATTRACT each
other is utilized in the operation of voltmeters for very high voltages.
The entire meter is immersed in oil tank, the oil
serving the double purpose of insulator and proper
damper, since the cylinder must revolve
in an oil bath
ELECTROSTATIC VOLTMETER
11. ELECTROTHERMAL
Electrothermal - Meters built upon this principle depend upon the expansion and
contraction of a wire carrying current to move a pointer over a suitable scale.
Hot-wire movements use the heating effect of current flowing through a resistance
to cause meter deflection. Each uses this effect in a different manner. Since their
operation depends only on the heating effect of current flow, they may be used to
measure both direct current and alternating current of any frequency on a single
scale.
The hot-wire meter movement deflection depends on the expansion of a high-
resistance wire caused by the heating effect of the wire itself as current flows
through it. A resistance wire is stretched taut between the two meter terminals,
with a thread attached at a right angle to the center of the wire. A spring
connected to the opposite end of the thread exerts a constant tension on the
resistance wire. Current flow heats the wire, causing it to expand. This motion
is transferred to the meter pointer through the thread and a pivot.
12. ELECTROMAGNETIC
• The MAJORITY of meters used in commercial work fall in this
class.
• The OPERATION of the meters of this type depends upon the
presence of magnetic field which acts upon a movable
element.
• ELECTROMAGNETIC may be further classified as follows:
1. PERMANENT MAGNET TYPE
2. MOVING IRON TYPE
3. DYNAMOMETER TYPE
4. INDUCTION TYPE
13. PERMANENT MAGNET TYPE
Demonstration of the constructional
features of permanent magnet moving coil
type meters. Movement with spring control
and magnetic damping Housed in a tough
plastic frame with transparent front and
back windows. Accuracy ± 2.5%. Basic
sensitivity calibrated at 5mA, 100mV FSD
Useful for demonstrating the working
principle of AC or DC ammeters,
voltmeters and galvanometers.
Interchangeable plastic scales are
available separately.
14. MOVING-IRON METER
The meter is composed of an energizing coil, which is located at about 45 deg.
With the horizontal, and a rotating element, which is merely a rectangular
piece of thin soft iron mounted on a shaft. When the coil is energized, the soft
iron vane seeks to place itself parallel with the magnetic flux of the coil; hence
the shaft is caused to rotate. The torque thus produced is opposed by the
action of a spiral spring,
15. DYNAMOMETER-TYPE METER
The dynamometer type of meter is composed of two stationary
coils and one movable coil upon which is mounted a pointer.
When the current flows in these two windings. the movable
coil tends to place itself parallel to the stationary coils. The
motion of the movable coil is opposed by the action of a spiral
spring.
16. INDUCTION TYPE METERS
Induction type meters operate on the principle of the revolving magnetic field
produced by out of phase currents that are flowing in separate windings. If an
aluminum disk or drum is located between two such windings, there will be
eddy current induced in the disk, and a resultant torque will be produced
which will be proportional to the magnetic flux and the eddy currents flowing
in the disk.
17. TYPE OF MECHANISM
Indicating Meters – This class includes ammeters, voltmeters, wattmeters,
power-factor meters, etc.
• All such meters as are equipped with a POINTER that is caused to move
along a proper scale, thereby indicating the conditions existing in the circuit at
a particular instant.
18. INTEGRATING METERS
All instruments that measure energy or its equivalent must be provided with a
proper mechanism to sum up the energy consumed by the circuit to
which the meter is connected. The most common meter of this type is watt-
hour meter. The revolving disk or armature of such a meter causes a set of
gears to rotate, thereby registering the total energy consumption.
19. RECORDING METERS
A recording instrument is essentially an indicating meter, the
pointer being provided with a suitable pen point and the scale
being paper roll or a circular chart. In either case the chart is
caused to move by some kind of clock mechanism, the pen
point thereby tracing the complete record of conditions
existing the circuit.
20. TYPE OF CONSTRUCTION
PORTABLE & SWITCHBOARD
• Portable instruments must be very rugged in order to withstand the severe
usage to which they are generally subjected
• Switchboard instruments are of two general types, rectangular or round for
either surface or flush mounting.
21. APPLICATIONS
• Ammeter – Alternating current ammeters are generally of the moving iron
type, the dynamometer type, or the permanent-magnet type if equipped with
a suitable rectifier circuit.
• Voltmeter – In the case of voltmeters, an appropriate resistance must be
used in series with the instrument in order to limit the meter.
• Wattmeters– The electrodynamometer instrument is generally used for the
measurement of power. The stationary coils are connected in series with the
line, therefore they carry the current of the circuit. The circuit potential is
applied to the moving coil. A suitable resistance must be used in series with
the movable coil.
• Reactive Volt-ampere (Var) Meter – In order to make a wattmeter read
reactive volt-amperes, it is only necessary to shift the voltage that is applied
to the moving coil by 90 deg.
22. • Watt-hour Meters and Reactive Volt-ampere Hours (Var-house) – By
suitable connections either kilowatt-hours or reactive kilovolt-ampere hours
can be obtained. The motion of the revolving disk is transferred to a set of
gears that record kilowatt-hours or reactive kilovolt-ampere-hours.
• Kilovolt-ampere Meters - Measurement of kilovolt-amperes involves two
independent elements: a watt-hour meter and a reactive volt-ampere element
as outlined above. The motions of the two independently moving elements
are added vectorially by means of a ball-type differential gearing fitted within
the register mechanism. The resultant motion of the sphere is proportional to
total kilovolt-amperes, and if properly harnessed it can be used to indicate
kilovolt-ampere demand, maximum kilovolt-ampere demand, or power factor.
23. • Three-phase Energy Meters – Three phase metering of real and reactive
power and energy are accomplished by two or three element meters,
depending on whether the system has three or four wires.
• Power – factor Meter – The stationary coils are connected in series and
placed directly in the line, while the movable element composed of two coils
is connected across the line.
• Frequency Meter – A disk carrying a pointer is pivoted between two poles
which are excited with windings connected in such a way that the torques
produced in the disk is such a way that the torques produced in the disk tend
to neutralize each other.
• Synchroscope - When synchronizing two generators, it is necessary that
the voltages of the two machines be equal and in phase.