Thank you.
I left out some piece of info. Not all fins can be installed due to repair issues. It is a relatively old transformer and the fins are rusted. Sandblast and painting introduces leaks (we test one). So what you are saying is that the copper losses will be a ninth of the losses at full...
Hi,
I'm overseeing the installation of a power transformer. At full-load, this is a 7.5 MVA 30/6.6 kV transformer. However, the prospective load is roughly 2.5 MVA. How can I go about calculating the copper losses of this transformer if I have the winding resistances. Is it correct to say...
Thank you scotty! Nobody authorised the use of scrap cables but the responsible electrician has since been brought to order. How can I determine the available fault current?
I recently had an incident where one of our mine operatives stepped on a submersible cable and it exploded (We later discovered that the cable was scavenged from the scrap yard). This cable was only carrying 20 A.
My initial thought was to bar everyone from stepping on cables even armoured XLPE...
Notified Maximum Demand is the electricity demand that a customer requests from a utility and which is the maximum demand that the customer requires.
I hope the derived definition suffices.
I'm a graduate Electrical engineer and I just started working for a mining company. My boss told me about the plans he has of increasing the mine's Notified Maximum Demand. However he does not really have any idea as to how to calculate the NMD. In the past, he relied on his gut feeling.
I was...
