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detecting internal FAUlTS IN A TRANSFORMER WINDING


Posted by: Wifi
Created at: Wednesday 27th of October 2010 11:35:03 PM
Last Edited Or Replied at :Wednesday 27th of October 2010 11:35:03 PM
WINDING , TRANSFORMER, FAUlTS , internal, detecting , winding faults in three phase transformer, winding faults inthree phase transformer , internal faults transformer windings, interturn short in transformer , detecting internal faults in a transformer winding pdf, how to detect fault in transformer winding , electrical seminar of buchholz relay, detection of internal faults in transformers , magnetic unbalance test on 3 phasw transformer, single phase transformer magnetic balance test , magnetic balance test of transformer, transformer interturn fault detection with relay , transformer internal fault detection, project topics related to windings of transformer , inter turn fault of three phase transformer,
romechanical forces at service current and over currents.
Erosion of winding
Erosion of conductor insulation

ADVERSE EFFECTS DUE TO FAULTS
Severe hot-spots
Oil heating
Winding deformation
Damage to clamping structure
Core damage
Explosion

MAGNETIC BALANCE TEST
Carried out on three phase transformers
Energize one of the phases with a voltage lower than rated voltage
Keeping all the other phases open-circuit
Compare voltage of this winding with open circuited winding
A fault in the winding can be detected by the induced voltage variation

BUCHHOLZ REL..................[:=> Show Contents <=:]



List of mechanical Seminar topics3


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:15:31 PM
Last Edited Or Replied at :Friday 02nd of January 2015 12:16:13 PM
seminar topics computer networks, seminar topics chemical engineering , seminar topics computer science engg, seminar topics cse , seminar topics computer science, latest seminar topics mechanical , new seminar topics mechanical, latest mechanical seminar topics mechanical engineering , seminar topics mechanical engg, seminar topics mechanical branch , technical seminar topics mechanical engineering, seminar topics mechanical engineering , seminar topics mechanical, topics3 , Seminar, mechanical , List, mechanical seninar vibration control techniques , cryogenic ball valves,
aring Life Measurements..................[:=> Show Contents <=:]



List of mechanical Seminar topics2


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:14:45 PM
Last Edited Or Replied at :Saturday 20th of September 2008 12:14:45 PM
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ket Powered Aircraft
Hydrogen Generation via Wind Power Electrolysis
Combustion Research
Liquid Injection Thrust Vectoring (LITV)
Energy Saving Motors
Blended Winged Aircraft
Nanoscale Fractals
Nanomaterial Based Catalyst
Regenerative Fuel Cells
Self Repairing Composites
Laod Sensing Hydraulics
Modular workstations
Stereoscopic Projection Systems
Virtual Reality Visualisation
Steer- By -Wire
Advanced Off-set printing
Hybrid Synergy Drive
Risks of Nano Engineered Particles
Rotating Scroll Power Compressor
Nano Spreader Cooling
Self Extinguishing PVC's
Electromagnetic ..................[:=> Show Contents <=:]



Frictionless Compressor Technology


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:11:18 PM
Last Edited Or Replied at :Friday 14th of December 2012 01:34:04 AM
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This compressor has high reliability, efficiency, less maintenance cost and staff. With the help of digital control system the controlling and monitoring of work is very easy. The frictionless compressor technology makes new revolutions in the field of air conditioning, refrigeration etc....................[:=> Show Contents <=:]



List of mechanical Seminar topics7


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:09:13 PM
Last Edited Or Replied at :Monday 29th of April 2013 02:08:03 AM
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Tyre ReTreading
Liquid Hydrogen as an Aviation Fuel .
Two Stage Fuel Injection System
Geothermal Power
Reverse Engineering
Transonic aircraft
MHD Submarine
Can a ship fly?
Air pollution from marine shipping
Modified four stroke engine
Sensotronic Brake Control System
Av..................[:=> Show Contents <=:]



List of mechanical Seminar topics6


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:08:44 PM
Last Edited Or Replied at :Saturday 01st of August 2009 08:30:41 AM
mechanical energy definition, mechanical equilibrium , mechanical engineering schools, mechanical engineering jobs , mechanical engineering salary, mechanical energy , mechanical engineering, mechanical aptitude practice test , mechanical and organic solidarity, mechanical animals lyrics , mechanical advantage of a lever, mechanical air service inc , mechanical asphyxia, mechanical animals , mechanical aptitude test, mechanical advantage , topics6, Seminar , mechanical, List , ballistics, self monitoring pneumatic systems uses ,
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Tyre Threading
High Efficiency Heat Exchanger
CFD In Weather Forecasting
Testing of Welds
Advanced Composite Materials
Topographic Characterization and Modeling of the Precision Surface..................[:=> Show Contents <=:]



Flywheel Batteries


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:06:57 PM
Last Edited Or Replied at :Thursday 11th of September 2014 07:14:47 AM
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ctrical translation....................[:=> Show Contents <=:]



MegaSquirt


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:00:34 PM
Last Edited Or Replied at :Saturday 20th of September 2008 12:00:34 PM
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ic fuel injection (EFI) controller designed to be used with a wide range of internal combustion engines. It is an open project headed by Bruce Bowling and Al Grippo, engineers that work on the U.S. East Coast. The project's do-it-yourself approach makes it the least-expensive system for this purpose. Basic costs are below US$200 as of 2005, although this can vary widely depending on application.

MegaSquirt is a successor of sorts to Bowling and Grippo's earlier EFI332 design, which was more complex yet more powerful system (at least initially). The EFI332 project started around 1995, and cu..................[:=> Show Contents <=:]



List of mechanical Seminar topics4


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:52:04 AM
Last Edited Or Replied at :Wednesday 12th of November 2014 10:46:52 AM
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n of Engines
Air Suspension system
Sensotronic Braking System
Moulds in Casting of Plastics and Thermoforming
Performance Analysis of Manufacturing Systems
ConCurrent Engineering
Diesel Particulate Filter
Weber carburetors
Corrugated Metals
Future of FEA iN MAnufacturing
Butterfly valvecatalytic converter
VTEC
Ballastic Particle Manufacturing
Vertical takeoff and landing aircrafts
Laser radar Guns
Automation in building construction, agriculture etc
Precision manufacturing and Inspection
Reliability and risk analysis
Optimisation of Mechanical Systems
Cruise missile tech..................[:=> Show Contents <=:]



magnetic balance test of transformer


Posted by:
Created at: Monday 15th of October 2012 07:31:58 AM
Last Edited Or Replied at :Monday 15th of October 2012 07:31:58 AM
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What is a magnetic bala..................[:=> Show Contents <=:]



A Novel Three Phase To Five Phase Transformation Using A Special Connection TF


Posted by: vsavkrishna
Created at: Sunday 01st of January 2012 09:34:54 PM
Last Edited Or Replied at :Thursday 05th of January 2012 11:54:18 PM
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Dear all,

I'm looking for the MATLAB file for the project so called A Novel Three Phase To Five Phase Transformation Using A Special Connection T/F. Can any one provide me the same? Please!

I have the docu..................[:=> Show Contents <=:]



A Novel Three Phase To Five Phase Transformation Using A Special Connection TF


Posted by: vsavkrishna
Created at: Sunday 25th of December 2011 08:57:47 PM
Last Edited Or Replied at :Monday 26th of December 2011 01:04:43 AM
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Hi Everyone

I need the Designed circuit (MATLAB File) for A Novel Three Phase To Five Phase Transformation Using A Special Connection T/F. Can any one provide me the same. Please mail me at [email protected]


Thank..................[:=> Show Contents <=:]



Transformerless Inverter for Single-Phase Photovoltaic Systems


Posted by: smart paper boy
Created at: Tuesday 02nd of August 2011 03:41:17 AM
Last Edited Or Replied at :Friday 21st of December 2012 12:04:20 AM
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the PV array and the ground. In order to avoid
these leakage currents, different inverter topologies that generate
no varying common-mode voltages, such as the half-bridge and
the bipolar pulsewidth modulation (PWM) full-bridge topologies,
have been proposed. The need of a high-input voltage represents
an important drawback of the half-bridge. The bipolar PWM full
bridge requires a lower input voltage but exhibits a low efficiency.
This letter proposes a new high-efficiency topology that generates
no varying common-mode voltage and requires the same low-input
voltage as the bipolarPWM..................[:=> Show Contents <=:]



detecting internal FAUlTS IN A TRANSFORMER WINDING


Posted by: Wifi
Created at: Wednesday 27th of October 2010 11:35:03 PM
Last Edited Or Replied at :Wednesday 27th of October 2010 11:35:03 PM
WINDING, TRANSFORMER , FAUlTS, internal , detecting, winding faults in three phase transformer , winding faults inthree phase transformer, internal faults transformer windings , interturn short in transformer, detecting internal faults in a transformer winding pdf , how to detect fault in transformer winding, electrical seminar of buchholz relay , detection of internal faults in transformers, magnetic unbalance test on 3 phasw transformer , single phase transformer magnetic balance test, magnetic balance test of transformer , transformer interturn fault detection with relay, transformer internal fault detection , project topics related to windings of transformer, inter turn fault of three phase transformer ,
ratiometric circuit.
Measurement is conducted at low flux density
Measurement is equivalent to the turns ratio of the transformer.
V1/V2 = N1/N2
Measures phase angle deviation between the tested windings






PRINCIPLE OF OPERATION
Excite the HV winding of the test transformer
With signal ,line frequency.
Output of the LV winding is measured in a ratiometric circuit with respect to its magnitude and phase.
In addition to ratio , polarity of the winding also it indicates
Measurement is done over a no. of power frequency cycle..................[:=> Show Contents <=:]



A new high-efficiency single-phase transformerless PV inverter topology


Posted by: project report helper
Created at: Saturday 09th of October 2010 02:53:05 AM
Last Edited Or Replied at :Saturday 09th of October 2010 02:53:05 AM
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he photovoltaic (PV) panels and feed it into the utility grid. According to the latest report on installed PV power, during 2007 there has been a total of 2.25GW of installed PV systems, out of which the majority (90%) has been installed in Germany, Spain, USA and Japan. At the end of 2007 the total installed PV capacity has reached 7.9 GW of which around 92% is grid connected . There are two main topology groups used in case of grid connected PV systems and they are: with and without galvanic isolation . Galvanic isolation can be on the DC side, in the form of a high frequency DC-DC tra..................[:=> Show Contents <=:]



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