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Thanks for the clarification.

What is the exact definition of a HV busbar short circuit withstand capability. If for example, after calcuation, we have a bus with a 3-phase symmetrical momemntray short circuit of 50 kA, how can we calculate the busbar short circuit withstand capability. Any IEEE references?

Do you have any idea where can I take a good course on electrical substation design in Canada? I tried to chck on www.epic-edu.ca, but they did not have this course.

Thx dpc, I got what you mean. I will start doing my own research. Thanks for the help.

So is there any way to get this paper?

I contacted sestech and they told me that I can not get it as lons as I am not of of their customers. BTW, how did you get this paper?

Hi jghrist, do you have this paper by any chance. I will highly if you can send it to me.

Hi Veman, Can I ask the customer to get one of his technicians to track the ground grid rods and bare conductors and provide me with the following: 1. The Rods (material, length, and size) 2. Ground grid conductors (material and size) connected, and the spacing between their connections. 3...

Thx dpc for your reply. I did check it and find it in IEEE 80-2000. Another question, If the customer does not have the drawing of the ground grid layout, what do I advise him to do so I can pursue with the study?

I am trying to conduct a ground grid study for one project. Can somebody send me any grid grid layout so I know how it lokks like.

Thx dpc! Appreciate your help.

Hi guys, I was checking a single line diagram and it shows a motor of 17.9 MCA, 600V, 3-phase. What does MCA stands for and how is it calculated?

What I mean exactly, is if anyone has a table of content for a harmonics analysis study.

This is for a harmonics system study for commercial.

Does anybody have a template or a previous report for a harmonics analysis study and mitigation. I am trying to build my own template and I do need help. Thank you for your concern.

Thx David Beach for your explanation. That make sense.

Thx a lot for the useful info. This seems to be the problem (not waiting for 5 min to discharge capacitors)

I have another question regarding sizing fuse. I have an MCC of 180 HP with an incoming feeder of 2 parallel runs 4-350 MCM Based on Canadian Electrical Code (CEC), Max Amps passing through this cable is 625 A and so is its permissible protective device rating. To size its fuse, the fuse...

In that case, what can we do? do we need to measure harmonics in the facility and then try to get the frequency resonance and then add somehow a line reactor or what?

Hi, We were adding a step capacitor bank (each 600KvAr) to one of our customers. Out technician was installing it was stepping in and out Capacitors simultaneously in a way that did burns the main transformer. Is there any suggestion what can be the cause of that? Note that the customer did have...