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A three phase load, around 4 km away from the 11/0.433KV distribution transformer (Neutral of Transformer is solidily earthed) and consisting of mainly very costly and sensitive electronic equipments is giving trouble due to high voltage difference between neutral and body earth. Whether this problem can addressed by connecting neutral at the load point solidly to earth?
3 6421On load tap changer (OLTC) explode? Transformer Vector group: Ynd11 Rated Power: 353MVA Rated Current: 693A Voltage:294/20KV OLTC Type: T III Y1000 110/c 12193w Max Operation Current: 295A Step Voltage: 550V Arrangement in Tx windings: Y Connection Problem: Damage of Unit 1 Generator Transformer On Load Tap Changer (OLTC) Description of Incident: 9.00 a.m. :- Generator No Load test on excitation system started 10.30 a.m :- Carried out AVR change over test 11.30 a.m :- Preparation for Generator Manual Synchronizing test 12.00 a.m :- Manual Synshronizing test started. Observed incoming generator voltage higher than running voltage. CECR operator operated Generator Transformer OLTC to bring down the incoming generator voltage 12.03 a.m :-Generator Transformer abnormal alarm operated at Gen.Control Desk (CECR) CECR operater at Generator transformer bay informed that the transformer oil splashed out from OLTC. CECR operater informed that he heard explosion inside OLTC. Observed Oil level & Oil Flow alaram operated at Tranformer local annunciator. 12.05 am :- CECR operator 'Open Gen Field Breaker” 12.10 a.m. :- Elec1 team inspected the OLTC and found the OLTC rupture disk was broken and oil spilled at OLTC area. - Elec1 found the OLTC top cover bulging. Do anyone know why and possibility cause happen in this OLTC.
9 21663What are the features of tata nano , technical specification of tata nano, overview of tata nano, varients of tata nano, price of tata nano, dealers of tata nano, expectation from tata nano, criticism of tata nano, tata nano hybrid ?
TATA,
3215Is it posssible to obtain the higher speed(3000rpm) for adiferentiallly cascaded induction motors(with 8 and 6 poles)
3 5016How to calibrate the magnetic flow meter and how to correct the flow if it is showing more flow.
5 28236In electronic board one fuse(rating 230v,100ma)showing 2.5 ohms with multimeter,then the fuse is healthy or not.
4 78211.Heat Treatment Process HRC Stands for 2.Material OHNS Stands for
ABCO, College School Exams Tests, Hindustan Motors, Shree Pressings,
10 41602i need previous 5 years solved q&a for rrb chennai section engg(mech) anybody if you know please atleast provide me the link or if u could send me it to my mail id karthick.silence@gmail.com
2786
hi if anyone have ntpc q previous year ...send me yogessuccess@gmail.com
plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?
I AM APPERING FOR RRB EXAM FOR SECTION ENGINEER I REQUEST U TO PLZ FORWORD THE PAPER PATTERN AND EVEN PREVIOUS QUESTION PAPER to stamil230@gmail.com
What are the key features of a Distributed Control System? describing the various layers (sensor through to business system interfaces) as well as the hardware, software and security aspects of the DCS.
send me jto(telecom) exam papers
Why neutral point is consider as zero potential?
asked about the power transimmisions and types of power drives and about milling different process types and differnce between straddle milling and gang milling
HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com
please send the last 5 years {{{JUNIOR ENGINEER - ELECTICAL, ELECTRONICS RRB CHENNAI and secundrabad}}} TECHNICAL question papers TO MY EMAIL ID dinesh100701@gmail.com
Draw the space diagram for a ten meter long beam simply supported at each end?
A steel column 3 m hight is of hollow square section, 200 mm outside dimension and 20 mm wall thickness. (young's modules E=210*10^9) calculate A: the compressive load which will give a stress of 60 MN/m^2 in column. B: the compression o the column under the load in (A).
I am going to appear RRB Sr. Section Engineer Exam, Electrical. Can you send me previous year questions of RRB Electrical engineer. specially Section Engineer questions. my email id is likerahulworld@gmail.com
By any way can we increase the B check hours from 300 to 500
i need last year question paper of GATE exam of chemical stream.but i failed i geting exam papers.soits humble request to u that if any body found last years GATE exam paper of chemical stream then send it to on this mail address.i shall be thankful to u for this. mail address:- sachin_4255@yahoo.co.in thank you.
can u give me the information about the questions asked by the bally in campus
