The name of the book is "Industrial Power Systems" by Shoaib Khan.
http://www.amazon.com/Industrial-Power-Systems-Shoaib-Khan/dp/0824724437
I picked it up to brush up on some calcs I haven't done in what feels like 10 years!
It seems alright so far, a lot of references to the IEEE colour...
Hi everyone,
I picked up a new text book the otehr day to brush up on industrial power. I came across soemthing i'm not sure is a mistake or not.
The example reads:
Utility: 120kV, 2000MVA, X/R=15
Base MVA = MVAb = 10
Base kV = 120, 13.8, 0.6
it then proceeds to work out base current for a...
I've come accross an old wives tale so to speak.
Some of the guys on site have been telling me that it isn't good practice to run a caddy welder (portable hand welder) or any electric welder for that mattter from a regular generator.
Has anyone heard the same thing? And if so a reason why...
Yeah i think your probably right, probably was the welder. I think i heard something about a damaged lead or something on it but i just can't remember. We were using mobile generators to power instruments in the machine also, not the machine itself. Mostly a very large multi outlet board for the...
Well i'm not sure if i would call it a grid/consumer, i suppose you could look at the machine as an electric shovel that drags around it's own generator.
The incident we had on site was when power was being supplied to the areas of the machine via generators. I should mention this was a...
G'day All,
I wanted to ask your opinions of a setup that is happening on the site i'm on. We currently have a 1500kVA Gen Set which is on top of a trailer (rubber tyres) being towed behind some mobile plant. What i'm interested to hear from you all about is the earthing of this...
Hey guys,
I've just come across a situation i'm a little confused about. Currently we have a HV motor which is earthed through it's supply cable which carries it back to the MEN of the entire machine it is working in. However we have been asked to put another earth from the chassis of...
I'm thinking you should have a look at those generators and do a fault study of your own. As i'm pretty sure you require circuit breakers and not just a PLC controlled contactor. There should be plenty of fault current there regardless of how small the generator to trip a correctly sized breaker.
Hey guys, had another question for you this time relating to a LV 3-phase bolted coupler. We have a coupler on a job which does not contain a pilot (there is provision for one in the coupler however). Now there has been concern raised that this does not seem correct however i am tending to...
Wow, sorry didn't mean to start the flame war haha, anyway. Just to clear a few things up for you guys, this is a design given to us from an overseas client in which we are attempting to make sure everything is above board here in australia. The cable is not buried in the ground but is supported...
Righto, so i should be more weary of the heating of the cables from them interfering with eachother's fields.
Would i be right to assume that induced currents would be negligible in objects that do not contain a fully enclosed path (i.e cable tray without a lid)
Yes the cables are all XLPE with probably a 3-5mm gap between phase groups. The individual phase groups are bunched into a triangula config /_\ <--- like that i guess.
