How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?
HAL,
1378What 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 8001We 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 10006How can I model an open-delta ground transformer for a network supplied by 4 unit GTG and power transformer in ETAP?
13216When should I use earth leakage circuit breaker for incomer and when should I use it for each feeder seperately?
1 2840How 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 9069the 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 50781.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.
1452Post New Electrical Engineering Questions
Hi Everyone ! My Name is Hakim ullah khan please i need formula of Cable Rating because i want to calculate by self without check any Table Chart... Thank you.....
700KW 6.6KV slip ring induction motor to use VFD to control the speed
DG Earth Value?
I am interested to know what does 15 KVA DG set actually means? If I dont know the DG rating, is it possible to identify KW by simply knowing the diesel consumption?
WHAT ARE THE DISADTAGES OF SINGLE-WIRE-EARTH-RETURN SYSTEM USED FOR RURAL ELECTRIFICATION?
Either It Possible a dc Motor to Run On Ac Drive [ Ex : ACS 800 , Yaskawa F7 ] If it is Possible How Pls Inform Me dinesh_elect_eng@yahoo.com
how does an encoder work???
What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?
What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning
How to design the NGR Resistance
What is the method of estamating of cable, CB,MCB ?
What are root loci?
what is the criteria for selection of conductor used for ehv ac electrical dischrge
what about the power of wattmeter at starting and loding?
can i use 2000/5A Clamp meter to measure HT cable
