KW and KVA?

[Shakey]

6.2 KWH x 12.44p = £18.51 per day, wow! £6,756.15 nice...

Ok so one more thing then if you would be so kind?

So if a server hosting rack (a metal cabinet full of PCs) has 2.4KVA electricity supplied with it, then why don't they just use Watts?

Do I then have to apply the power factor to it average 0.87 so really they supply 2.1KWH?

Thats it after that, honestly!! Thanks very much for your help, its much appreciated.

the answer is in the 'supplied with it'

whenever we talk about supplies we talk about VA because this is quite literally V supplied by amps available. Transformers and generators are normally rated in VA, (or realistically KVA.)

Of course, depending on what type of load you apply will depend how much of this VA (apparant power) you use as Watts (true power) and how much you just waste through inductive reactance

so if your load had a pf of 0.8, then for your 2.4KVa supply, then you could use 1.9Kw of true power

and to be honest, at this level its hardly worth worrying about.

if you were doing the same thing for a factory running at 500KVa, and by introducing over excited motors as synchronous capacitors to improve PF correction from say, 0.75 to 0.8, then you would be talking serious bucks !!!

 

[alex]

go on shakey.............. your unstoppable.


i think i might start making stuff up to try and wind him up and catch him out.

 

[Shakey]

go on shakey.............. your unstoppable.


i think i might start making stuff up to try and wind him up and catch him out.

bring it on......

and remember you dont need to know the answer to the question

you just need to evaluate how much the person asking the question knows about the answer to the question

its the art of the woffler

just ramble on till their eyes glaze over and it all goes away