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  1. rajapon

    Capacitor bank requirement

    Dear ScottyUK the following are the details i have in the drawing Rated output =5MVAR No.Of Stages =5 Stepsize =1 Rated voltage =11500V Insulation level =28KVrms Each capcitor stage contains the following Air cor damping reactor 250uH,53A 6 no's 201.7KVAR,7303volt...
  2. rajapon

    11KV busbar short circuit rating and parallel operation of transformer

    Hi Guys Ratings 11KV Busbar Rating=25KA for 3 sec Operating voltage of the bus bar =11KV Rated voltage of bus bar=12KV Rated normal current of bus bar=2500 Power transformer rating =20MVA,33/11KV In my S/S three transformers ,so in the 11KV incomer-3 & bus section-2 (5 breaker system)...
  3. rajapon

    Capacitor bank requirement

    Hi Guys I need your attention on the drawing which i sent u in the above attachment Incomer-1 ,Incomer-2 & Incomer-3 R phase CT they connected to the capacitor bank-1 Auto Power Factor Controller through auxiliary contact multiplication with the condition of Bus section & incomer combination...
  4. rajapon

    Capacitor bank requirement

    Thank you guys for your reply.........here i will attach some of the drawings Capacitor bank Auto Power Factor Controller CT input selection 1) Capacitor bank-1 a) If I/C-1 CB closed R-phase of the CT will come to summation CT of APFC b) If I/C-1,B/S-1 & I/C-2 closed R-phase of I/C-1 &...
  5. rajapon

    Transformer operating in parallel with different percentage impedance

    Hi Guys , 3*20MVA S/S Transformer 1&2 have the same percentage impedance Transformer 3 have the different percentage impedance My question can we make parallel opearation of transformer 2&3? Thansk & Regards Raja.P
  6. rajapon

    Capacitor bank requirement

    Hi everyone, I am Raja, i have some technical doubts ,i am working in 33/11 KV substation with 3 20 MVA(33/11.5KV) transformer 1) 11KV SWG SEC-A,SEC-B & SEC-C (three incomer & 2 Bus section scheme) 2) 5 MVAR capacitor bank for each 11KV SWG( SEC-A,SEC-B & SEC-C) My doubt when incomer-1 in...

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