Thanks guys. The cables will be laid in ducts, but from what you are saying I can take that:
Positive-seq Z = AC resistance and reactance in the datasheet
Zero-seq = unknown but could be found from the cable manufacturer.
This leads to another question. How essential is it to have the...
Hi all,
I am using a network distribution software and trying to create some new cables. For the creation of a cable, I have been given a number of parameters that I need to fill in.
I have a choice; either I can give the radius and GMR of the cable to calculate the positive and zero sequence...
I have used SynerGEE Electric and it seems quite comprehensive. http://www.gl-group.com/en/powergeneration/SynerGEE_Electric.php
You might as well have a look and see if it suits your need.
Thanks for the explanation guys.
jghirst, my first instincts were that 'demand' could be the load over a certain period of time or maybe during that specific time when the analysis was run.
I looked around in the technical reference and the index for the software but couldn't find any proper...
Hi,
During my time at university, we used the terms demand and load interchangeably. However currently I am using a software that displays, the results of a load flow anaylsis, different numerical values for Demands (in kW, kVAR, kVA) and Loads (kVAR and kW) on a feeder . I am confused as to...
Harmonics limit settings in the UK are defined in ENA documents G59/2 ,G83/1 and G5/4-1.
My question: Is there any similar recommendation body in the US that sets limits on harmonics for DNOs and TNOs to follow? If so, are these limits similar to those in the UK?
Additionally, is anyone aware...
Thank you all for the input. ScottyUK, you mentioned that domestic supplies are taken from one of the lines. Does it mean that a house is fed in by a 240V 1ph supply? And if the utilities try to keep current equal in all the lines; would it mean that if the requirement of a house is greater than...
Thanks Bill and jghrist. Just to probe in a bit more, is the wiring in a house divided into sub-phases?
When you see the switching board in your house, there are a number of 'phases' (as people generally refer to them) that control a certain area of wiring in the house (and trip if something...
Hi,
Its a pretty basic question (embarassingly enough) but I am somehow confused about the phases on 415V distribution systems (typical neighbourhood voltage) in the UK.
Some references quote that voltage is stepped down from 11kV (3 phase) to 415V (3 phase) at the end of the street and this...
