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How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?
HAL,
1838What 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 9513We 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 11801How 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 71481.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.
1981Post New Electrical Engineering Questions
what is the ckt diagram of a tubelight and is it the simplest ckt of electrical engineering and also the component?
how much UPS neutral erath leakage current.
Is there any relevant technique to produce power from light and heat energy of the sun simultaneosly from same rays of light?
How can we measure the residual voltage in dc machines?
How to determine the breaking capacity such as break down current and break down voltage for VCB and CT's.
Difference between drift current and diffusion current?
What is the Basic Difference bitween Long Shunt Connection and Short Shunt Connection in DC Generator?
What is the mechanism of WTI
What is difference between YNyn0 and YNyn ??
How to calculate energy stored in a capacitance
how to select the no. of brushes in a lap winding?
Air circuit breaker safety
How to Prepare preventive maintenance shedule of machine tool.
After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.
hi I have done 3 yrs diploma in electrical engg after 10+2. I have 16 years of work experience into design proposals sales and engg application development in LV/MV swithcgear and sub station automation field. I want to apply for immigration to new zealand but I am not sure whether I qualify or not since I dont have a degree. Can anyone advice? Thanks Riz
