How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?
HAL,
1841What is the min.& max distance between two earth spikes is required for measuring earth resistance of an earth pit? Is the manufacturer of Earth tester decides this? Pls explain.
3 9514We use ungrounded DC system (220V/110V) for control and protection system in substations etc. Suppose we have long 2 core DC cables running from our DCDB in control room to the load (length of around 2 to 3 km). Do we need to protect these long DC cables from earth leakages or not? If yes how?
5 11803How can I model an open-delta ground transformer for a network supplied by 4 unit GTG and power transformer in ETAP?
13762When should I use earth leakage circuit breaker for incomer and when should I use it for each feeder seperately?
1 3717How can I communicate with an Areva MiCOM P121 relay by RS485 port? In other word, which command can I send and what information can I have recieved? please send some refrences, please. thanks
3 10481the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.
6 71561.what is the funtion of chiller primary & scondary pumps. 2.what is the use of distribution lines & Types. 3.what is the use the thermal power stations & how much capacity.
1982Post New Electrical Engineering Questions
We have given to 3phase supply to ups system & how can coming netural
If SFU is Switch Fuse Unit, What is the expansion for FSHF in Electrical Engineering?
What is marx circuit?
Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?
Different types of relay fault which phase sequence??
i have completed deee and i've (June2012-feb 2015 experience in electrical maintenance in pvt ltd company.company having HT & LT electrical power.how to apply electrical C-license ,NOW I was resigned my job,what are requirements of applying for c-license
what is the reactive power what is the use of it in system
Define maximum demand?
how can we design robots
what is the ckt diagram of a tubelight and is it the simplest ckt of electrical engineering and also the component?
why on delay timer used for fully automatic star delta starter?
I have iti elec, 1st aid, and 5 yrs experience in 7.5 mw power plant. Am i eligeble for 11kv license in telangana state..when, how to apply for that.?
how r charge carriers produced
how many electricity poles are there and what are the names and their sizes.
What is purpose of reactor?.What is different between line and bus reactor?