Why do they recommend hi octasne fuel in regular engines?
They say it will clean out the cylinders/carb. Others say for an engine designed for regular fuel(unleaded) it is just a waste of money. Does the higher compression engines actually burn this higher octane. How high has the compression...
At what KW will a diesel genset become more reliable than a proipane fired genset? I've heard over 500KW for power generation but below this its about the same except for thier inherent advantages and disadvantages.
Is there any point in putting a soft start for a motor which only starts at no load? (The application is a magnetic coupled adjustable speed drive controlled fan which starts it at no load) Is there not a spike whether I have a soft start or not?
Also- will the soft start let through the...
Does anyone have any experience locating faulted (broken) ground wires on a primary ground system of a good size multi building plant site?
I mean about one million sq ft. total. the grid doesn't extend across that area but for each building only. There are about 10-15 structures. The primary...
I have a 30 year old 2 MVA dry type transformer that was sitting for 4 years resulting in moisture in the insulation.
It was tested and failed the megger test indicating moisture. I would like to dry out the windings and retest but is it worth it? What is the prediction of reliability of the...
I have a problem with a ground fault circuit protector in a HID light circuit about 300m long and 15KW, 30 lights. The ground fault trips out when the nieghbouring crane comes on which utilizes around a 200-400kw VFD. The VFD has its line and load reactors like it is supposed to and the whole...
I have an application where I want to add concrete encased ground rods on the perimeter of my plant to reduce the copmbined ground resistance. The resistivity around the ground mat or grid conductors is high about 500ohm-m. The resistivity of the concrete encased electrodes will be assumed...
I have an application where I want to add concrete encased ground rods on the perimeter of my plant to reduce the copmbined ground resistance. The resistivity of the ground mat or grid conductors is high about 500ohm-m. The resistivity of the concrete encased electrodes will be assumed at 20ohm...
