How to test and satisfy the conditions of the vector group
YNd1 for power transformer?
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Answer Posted / a.p.nanjappa
THIS IS ONE OF THE MANUFACTURER TEST OF VECTOR GROUP.
IN THIS TEST , THE HV RPh or Uph is connected to low voltage
rPh. /uPh. then 400v 3ph is applied. various voltage are
measured. (RS,ST,TR, R-N,S-N.T-N, r-s,s-t,t-r, r-N,s-n,t-n.
then, draw the graph,
refer to electrical hand book-transformer, any text book
also,manufacturer test report
| Is This Answer Correct ? | 3 Yes | 5 No |
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