I have a transformer 3phase 11kv/410v and its name plate missing. now how can I judge its rated kva?
Answers were Sorted based on User's Feedback
Measure size of 11 KV winding wire ( near HV Bushing or tap changer0 and find out current by using a current density of 3 A/Sq.mm and then KVA.
Ex : HV Conductor Size = 60 Sq.mm i.e I1=180 A So KVA = 3500
and cross check with LV conductor size which will be
1650 Sq.mm.
Is This Answer Correct ? | 6 Yes | 0 No |
Almost all dist transformers have similar cooling , compare the quantity of tr oil with known one to get appx rating
Is This Answer Correct ? | 0 Yes | 3 No |
what is mean by amf
Ho de we calculate the line loss of a 500 kv line over 1000km.
What is your favorite aspect of the engineering field?
Dear sir, we are getting voltage fluctuations suddenly for 2 or 3 minutes again it becomes normal. we checked each and every connection some times we are getting 110 volts like that from earth to neutral again it is reducing we are getting supply from 45 kva DG set give earthing properly.
Why sip ring used in ac motor also why its not used in dc motor?
which loses are in transformer .explane each loses
Is Neutral earthing necessary for single phase system or Genset? if yes or no then why?
sir, What is the purpose in Generating power plant is operated Lagging PF and Above 0.9 lag PF?
why the three phase transformer's star point does not sparks or seperated? while we often see that two phases touches each other it sparks and ocationaly conductor breakes out.
why does chattering take place in ac contactors? can it be avoided & what care does the manufacturer take to eliminate this phenomenon????
what is the principle of tubelight ??? what is the function of starter and choke ???
I want to apply for ONGC recruitment 2012 .I am BE Electrical but it is mentioned that to apply for this post you have to have Electrical supervisor certificate .so please tell me from where can i get such certificate ???