Answer / gopi

following methods are there:
1) reduction of induction in the core.
2)adequate design and costruction of core.
3)insertions of vibrations insulating comonents inthe
transformer tank.
4)adequate construction of tank.

Answer / javad

gopi s answer s correct

Answer / praveen

we cant eliminate humming noise completely but partially eliminated on tighting of bolts around the laminated core

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why sec of ct should be kept shorted

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What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

0 Answers  

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