How will polarity test of Dy5 transformer ?
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Answer / arun r
VECTOR GROUP TEST [For 3Ф Transformer Only]
1. HV Side RФ & LV -1 r Ф Short Provide.
2. 3 Phase 4 Wire Supply Applied In HV
Side.
3. For Following Voltages Measured Are In
Volts
RY YB BR RN YN BN
ry yb Br rn yn bn
Rr Ry Rb Yr Yy Yb
Br By Bb Nr Ny Nb
Rn Yn Bn Nn
VECTOR GROUP = Dyn5
PROOF
1. Ry=Rb 3.Br<Bb
2.By<Bb
4.Yy=Yb
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Answer / karthick
If I short Hv side Y phase and LV side r phase what will happen
Is This Answer Correct ? | 0 Yes | 1 No |
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