I have seen 1 video in which a person getting shock while
standing at top of a train,i have 1 question?
why the people sitting in the train doesn't get shock while
that man getting shock from top of the train? How the
earthing of train works?
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Answer Posted / subrahmanyam
all the above answers are wrong since the frequency of the
Over head line (above the train) is 25 Hz and it is Ac
supply, if it is DC supply as in answer 3 how long it will
be supplied since DC supply cannot be supplied for a long
distances, since there will be voltage drops. you can
notice the substaions along with the railway lines, for DC
supplies there will not any substations, only generating
stations will be there.
Traction motors will be establised in the locomotive is DC
sereis motor, now you may ask about the supply since it is
AC supply with 25KV with 25Hz frequency the Rectifiers will
be used in the locomotive.
ANSWER 3 is correct in only tram way service that to with
24Volts DC supply.
now coming to why man was not elctrocuted in that video:
since it low frequency the field around conductor will less
and until unless he touches the line/conductor he will not
get effected. then about passengers before them when the
person was electrocuted the nearest substation to the
accident area will trip, that area will be isolated with in
Micro seconds. hence passengers will not get effected.
| Is This Answer Correct ? | 15 Yes | 8 No |
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