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Fault

Current on primary side of transformer due to secondary side fault
2009-09-22 00:43:00
I have a question 13.8/0.48 kv 1mva with 5.75 % reactance what will be the fault current at primary side due to fault at secondary side 1 single phase to ground 2 phase to phase 3 three phase top ground kindly help
Fault Current for Multiple Transformers in Single-Phase App
2009-09-18 17:24:00
My customer has started constructing a building without properly checking the the hydro in the area. Subsequently the utility only has single phase 14.4KV and the customer' requires 325KW of power, I know single phase what a nightmare!!! I'm the electrical contractor and I'm proposing that
earth fault and over current relay
2009-09-10 13:45:00
dear all i have a earth fault over current relay ,which always trip the circuit breaker due to earth fault ,how can i minimize tghis earth fault current to keep the supply smooth
Earth Fault and Overcurrent Relay
2009-09-10 13:45:00
dear all i have a earth fault over current relay ,which always trip the circuit breaker due to earth fault ,how can i minimize tghis earth fault current to keep the supply smooth
Generator Start up earth fault protection 64ST
2009-09-07 16:10:00
What is meant by - Generator Start up earth fault protection 64ST. Is it normal current based or voltage based function.How to achieve this protection with latest relays
Sag Mill Tripping on Earth Fault
2009-09-06 10:26:00
Hi All Electrical Engineer, I have problem in our Sag Mill Motor which tripping on Earth Fault and block tripped on the Multilin protection relay. This Sag Mill is driven by the 4MW / 6.6kV wound rotor, with soft stater called LRS - Liquid Resistance Stater. We don't have problem of starti
Fault in O/H 132KV Lines without Earth Wires
2009-09-01 17:53:00
We are located in the eastern part of India and the area under discussion is very thunder-prone. In our 132 KV transmission Lines, in many case some earth wires are missing at different spans for different lines. During stormy weather, a no. of line trippings are occurring. Can we attribute it for a
earth fault
2009-08-22 09:56:00
how earth fault current is to be calculated in AC drive ?? could it be earth free ?
Fault current and role of cable selection
2009-08-12 13:23:00
How to calculate fault current and how cable size influences?
Fault Current and Cable Selection
2009-08-12 13:23:00
How to calculate fault current and how cable size influences?
Earth Fault Problem in 260 KVA VFD
2009-07-30 13:17:00
Hi frnds.... i m facing earth fault problem in 260KVA vfd. I m using 200KW motor with this drive for slurry pump application. proper earthing is provided for both motor and drive panel. while drive runs on load, after running 10 to 12 hours VFD trips on Earth fault. but after reseting again
Generator Rotor Fault Detection
2009-07-26 14:22:00
How can incipient rotor turn-to-turn winding faults be detected in a 16MW, 15kV, 3-phase 60Hz 1200 rpm synchronous generator with salient pole rotor, while generator is in operation?
divine design fault
2009-06-23 21:36:00
Tues 23: Tony Blair is not the only person on the planet who needs to find purpose with his life. Most of us do. However, most of us also apply some introspection to our daily search for meaning. Not that I have had much time for introspection today. Creating art is just the easy part ...
pin pointing communication fault
2009-06-17 09:55:00
hellow after locating the fault by the proper TDR LOCATOR in pilot cable what is the best way for pin point the fault. regards
cable fault locator
2009-06-03 13:12:00
i want some information about analysis of cable fault locator curve
cable fault location
2009-05-31 13:46:00
cable fault location curve analysis
Earth Fault Currents
2009-05-18 12:20:00
We have an 11kv/6.6kv Dyn11 transformer with it's secondary, resistance earthed through 4.7ohm Earthing resistor. This 11kv/6.6kv transformer is conected to switchgear panels that then distributes power to four other 6.6kv/0.4kv transformers that are solidly earthed. My question is this:- If there
Phase-to-Phase Fault Detection
2009-05-14 18:08:00
Pls, what can be used to detect a phase to phase fault, if differential relay was not installed. I know an earth fault relay would not detect it but would an over current relay detect it.
Donald Trump Attempts to Bridge Carrie Prejean ?Fault line?
2009-05-12 22:47:00
The whole Carrie Prejean hullabaloo has revealed a fault line in American culture, between the politically correct purveyors of information and ideas in our mainstream media and left-leaning blogs on the one hand and social conservatives, their occasional allies on the secular right and others who favor civil discourse of controversial issues on the other. ...
Power Cables and Fault Locations
2009-04-29 17:26:00
Dear all, I'm an engineer doing cable laying works like single core 66kV & 220kV Power cable. While doing HVDC testing for outersheath of the power cable, we have found some unexpected results it seems there is a fault on the outersheath of one phase. Now we are about
EARTH FAULT RELAY TIME SETTING
2009-04-16 06:47:00
dEAR SIRS, BY WHAT PERCENT OF RATED CURRENT WE NORMALLY SET THE VALUES FOR EARTH FAULT AND OVERCURRENT .? AND WHAT WOULD BE THEIR OOPERATING TIMES.????? FOR EXAMPLE: TRANSFORMER-2MVA,RELAY USED CDG13 OR CDG26(IDMT),CTR-3000/1(IN LT SIDE),CTR-200/5(IN HT SIDE),6.6/.415KV,
Transformer Earth Fault and Overcurrent Values
2009-04-16 06:47:00
dEAR SIRS, BY WHAT PERCENT OF RATED CURRENT WE NORMALLY SET THE VALUES FOR EARTH FAULT AND OVERCURRENT .? AND WHAT WOULD BE THEIR OOPERATING TIMES.????? FOR EXAMPLE: TRANSFORMER-2MVA,RELAY USED CDG13 OR CDG26(IDMT),CTR-3000/1(IN LT SIDE),CTR-200/5(IN HT SIDE),6.6/
Sensitive Earth Fault Protection
2009-04-07 05:50:00
What are the required elements (CT /PT Requirements) to acheived sensitive earth fault protection in a general primary distrubution circuits?
Cable sizing calculation based on end of line fault
2009-03-18 12:25:00
Cable sizing calculation based on end of line fault
Generator Rotor Earth Fault
2009-03-17 20:08:00
The Generator is tripped with rotor earthfault. What are the possible causes?.
How to calculate the fault level at the HT side of the transformer
2009-03-13 07:13:00
Dear sir i can calculate the fault level at the LT side of the transformer but not able to undersatand how to calculate ther fault level at the HT side of the transformer plz reply raja sen manager maintenace & Utility Parakh agro Industries limited India mail id: r
Transformers - Calculating the HT Fault Level
2009-03-13 07:13:00
Dear sir i can calculate the fault level at the LT side of the transformer but not able to undersatand how to calculate ther fault level at the HT side of the transformer plz reply raja sen manager maintenace & Utility Parakh agro Industries limited I
Maybe It's Ralph Waldo Emerson's Fault?
2009-02-28 13:15:00
The Internet makes everything easier; with the Internet, it's possible not just to waste 43 hours a week trying to look up your favorite videos and then posting them into a mixtape only to find that you copied the same video over and over (again, SORRY!, and the corrected version is up!) and order toast online. With the Internet, it's easier and quicker to get Furniture for Kids without all the hassle.Which is good, because we need to get some new Boys Bedroom Furniture for the Babies!, who are heading towards three and getting a little big for their cribs, and if there's one thing I'm consistent about, it's that I HATE furniture shopping. I hate driving all over town and having to wander through giant warehouse stores with salespeople clinging to me like so many remoras, only to find that the furniture I pick out is out of stock and will be delivered in 14 weeks.With the Internet, though, I can shop for a Bunk Bed for the boys right from my desk, listening to Vampire Weeken...
Peugeot 307 hdi Anti Pollution Fault
2009-02-22 01:35:00
I have a few problems with my Peugeot 307, I needed some advice so I don't get ripped off. It's a 307 HDI 2.0 D Turbo 110 BHP, 53 Reg, about 52,000. The Engine management light is on and often while driving the dial flash STOP 'Engine Coolant Temp Too High'. Also it will say quite often 'Ant
FAULT CURRENT CALCULATION
2009-02-21 13:16:00
transformer rating-2 MVA 6.6kv/.433kv,6.61%impedence. now my qustion is 1) what is the maximum fault current? 2) what will be the ground fault current? 3) what are the setting parameters for IDMT relay for the protection of sytem connected with it.? I mean overcurrent relay and
Fault Current Ratings
2009-02-10 17:22:00
Guys, I'd like to know how to calculate the max fault current for an 11kv transformer if one knows that the power output is 10.9mVA? Elp.
The Growing Privacy-Publicacy Fault-line ? The Tension Underneath World Dat
2009-02-04 14:32:00
-By Scott Cleland Given that January 28 was World Data Privacy Day, its instructive to examine why there is such increasing tension underneath the surface of the Internet over the issue of privacy. I believe there is a growing “fault line” between two opposing tectonic forces — one that believes in online privacy and the other ...
Allannah commented on the blog post my fault.
2009-01-28 08:05:00
Allannah commented on the blog post my fault. i honestly would rather you didnt. they are my own personal feelings... sorry no offence.
Allannah wrote a new blog post: my fault.
2009-01-19 08:48:00
Allannah wrote a new blog post: my fault. isnt it up to the oldest to look after the house? i mean, after my dad passed away i feel like its up to me to hold down the fort. well my older sister is moving out, i mean shes 21...its about time. but imĀ  ready to leave the nest. start my own life, have ...
Unknown Fault with ABB-DCR600 DC Drive
2009-01-16 14:20:00
HI, Need an advice on fixing a ABB-DCR600 main control card SDCS-CON2A, the keyboard panel display indicates a "CON COMMUNIC FAULT ". The ABB manual defines this as a communication fault between SDCS-AMC-DC and SDCS-CON2A cards. Also, the seven segment display/LEDs of the SDCS-CON2A car
Maurice A. FitzGerald wrote a new blog post: It was My Fault Journalspace w
2009-01-14 04:44:00
Maurice A. FitzGerald wrote a new blog post: It was My Fault Journalspace went down :( part one:The early years Yup. see I started a journal at journalspace like 3 or so years ago and since that time I made more then 4500 posts. That blog was the start of my life. Here are some characteristic posts of mine from July 2005 No hospital! posted 07/29/05 Psych stuff I drank last night. Not much. I beat the odds no hospital, no homelessness, no scenes perhaps ...
Anchorage Daily News Claims Own Anti-Palin Story Wasn?t Paper?s Fault
2009-01-11 13:40:00
-By Warner Todd Huston Remember when you were a kid and you and your best friend got caught doing something you two weren’t supposed to be doing? Remember the first words blurted from your mouth was, “Well, it’s HIS fault?” It’s a common reaction for a kid trying to avoid the wrath of Mom that he ...
prospective fault current
2009-01-05 09:48:00
Dear all what is prospective fault current.Please give explanation. Thanks and regards gova
Earth Fault Relay Indiacation
2009-01-03 11:55:00
We have 1925KW DC Motor for 6Hi Reversing Cold Rolling Mill Application . we obsearved Earth Fault Indiacation in Control Drive after running of one or two hours. The Insulation of the Motor is excellent( Megger Value 100 Megaohm). the supply cable condition is also good(Megger value 100megaohm). we
Tracing DC Earth Fault
2009-01-02 09:50:00
Happy new year... Have some serious problem at the power station with DC, we have 2 baterry banks 110v DC System A and B, how ever system A is really giving us trouble with an earth fault to negative alarm at the charger (own charger)and it's really giving us bad voltage i.e +92.2 to -27.69
?America?s Battered Image Among Muslims,? Naturally All Bush?s Fault
2008-12-15 16:05:00
-By Warner Todd Huston The Associated Press is as much as blaming the victim for the attack again with theirs headlined “Obama says he wants to ‘reboot’ America’s battered image among Muslims.” In this report we get the AP saying that the reason the Muslim world is mad at us is because of George W. Bush. ...
Major Earthquake Expected Along Tsunami's Fault Line
2008-12-15 14:06:00
From Scientific American: Another major earthquake along the same fault line that sparked the devastating 2004 Indian Ocean tsunami is likely in the next several decades — and it could unleash as much or more destruction, new research suggests. The tsunami, which killed an
Fault Current Test from the UL 360 Standard
2008-12-11 21:41:00
I need a laboratory that has the equipment to conduct a fault current test on a 6 foot piece of liquid tight flexible metallic conduit. A finished conduit is subjected to a current of 470 A or 4 seconds for trade sizes of 3/8 inches. The thermoplastic jacket on the conduit shall not flame.
Fault Level and Generator Power Rating
2008-12-09 10:43:00
u can refer B R Gupta-Power System analysis and design page number-313, Ex-10.28 I m working on DIgSILENT Power Factory...this is power system simulator software... Here, fault level is given 1000 MVA, what is this fault level, do I need to cofigure generat
Frugality To A Fault (For One, I Believe)
2008-12-02 23:58:00
(By the way, I posted over here based on what I thought was a well-written Guest Opinion that appeared in the Bucks County Courier Times today by Cyril Mychalejko.)The Murdoch Street Journal tells us here that Texas Governor Rick Perry and South Carolina Governor Mark Sanford (both Republican, of course) wrote a column basically telling the incoming Obama Administration and the 111th Congress that they don?t need a bailout, thank you??the federal government is not only burying future generations under mountains of debt. It is also taking our country in a very dangerous direction -- toward a "bailout mentality" where we look to government rather than ourselves for solutions. We're asking other governors from both sides of the political aisle to join with us in opposing further federal bailout intervention for three reasons.And the three reasons, by the way are: 1) We?re acquiring too much debt (a concern I would echo were it not for the fact that we have to get credit moving again; ...
Anti pollution fault, Peugeot 307
2008-11-30 12:51:00
I have Peugeot 307 SW 2 litre diesel. I am getting warning "Anti pollution fault" which stays on for a few seconds. This happens about 2 or 3 times a week. Is it serious , what is causing it, could it suddenly cause car to stop or loose power ?.
Britney?s Kids Swear and it?s not her Fault!
2008-11-26 05:47:00
Aw shoot! Britney Spears had come such a long way that I was really rooting for her to keep proving everyone wrong and showing that she could be a normal person. She recently though, gave an interview with USA Today and while what she says isn’t ‘over-the-cuckoo’s--nest’ kind of stuff, it definitely isn’t the most ...
Wave of Japanese Mothers Killing Their Kids?Guess Who?s Fault It Is?
2008-11-20 20:30:00
The news story Why Japan’s isolated mothers are killing their children (The Age [Australia], 11/8/08) has so many outrageously revealing quotes about the pro-mother/anti-father bias that it’s hard to know where to begin. Quote #1–”[Y]oung mothers feel acutely isolated from their community and receive no support from uninvolved or abusive husbands…In a moment of quiet desperation, ...
I was wrong - and it?s my own silly fault!
2008-11-19 16:12:00
I was wrong! There, I?ve fessed up to it. God it hurts but I really am very pleased that I was wrong and I promise not to make the same mistake again. You see I failed to trust my always reliable rule about what to do when I am in doubt about anything (it does ...
Conservatives, Obama?s Win is Your Fault
2008-11-10 13:30:00
-By Warner Todd Huston With that headline you may think I am employing hyperbole. If so, you would be wrong. I am absolutely and positively blaming the conservative movement for the rise to the presidency of a man that adheres to a socialist ideology. In fact, in this day and age, I might even blame conservatives ...
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