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 Topic Title: Energy Demand. Topic Summary: Supermarkets Created On: 06 October 2012 10:04 PM Status: Read Only Linear : Threading : Single : Branch
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 06 October 2012 10:04 PM nm234 Posts: 35 Joined: 19 March 2008 I'm trying to setup an examination paper with a question related to power consumption by a typical Tesco's Extra, a Large Sainsbury's or even an Asda. What kind of power consumption does a typical large supermarket pull at maximum demand? I'm guessing 3MVA @ 0.80pf? thus 2.4MW Active and 1.8 Reactive Then what i am trying to do is resolve a typical value for the aggregate Inductance/Capacitance/Resistance x 3 (as there are 3 lines), balanced. 3MVA/3 = 1MVA per line. I am guessing to find my impedance Z per line (230^2)/1MVA = 52.9milliOhms.? 07 October 2012 04:38 PM ukmaharaja Posts: 11 Joined: 26 May 2005 Hope you have assumed supply voltage 3 phase 0f 400 v ie 230 v per phase. regards, 16 October 2012 12:10 AM nm234 Posts: 35 Joined: 19 March 2008 Yep
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