how rated the neutral voltage of transformer and reactor,
e.g. 400/220, 200MVA transformer have neutral voltage of
33kv. and reactor voltage 145kv. how this rating decided?

how rated the neutral voltage of transformer and reactor, e.g. 400/220, 200MVA transformer have neu..

actualy the short circuit in HV is very hgh and no body
can expect the humen and finaacial cosequences for that
therfore the engneering methode for that to connect one
resistance on nutral side that will reduce the impact of
short circuit voltage at the smae time you can controlled
through switchgear protrection
to allocate the resistance value you have first to find the
short ciruit current on neutral side

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