Sub-Station Label

Why the Substaions are labled as 11KV/33KV or 66/11KV etc instead of label with the POWER TRANSFORMERS Rating (In MVA/KVA)?

Questions by Pavankumar_reddy5

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kannanvellai

  • Mar 31st, 2009
 

All electrical equipments operated depend on voltage.
In substations we can
get same ratio transformers with various power ratings.
Ex:
400/200KV with 800MVA
315 MVA

Power ratings
are depend on load.
If we have small rating TR we connect less load

High rating means we can connect high load
So the substations are labeled like 132/11kV
like that.

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