Re: Near miss at Victoria (London)

["Aus Visitor" <if-u-know@cwcom.net>]

jjjim wrote in message <3A59A7FD.2063C090@bigpond.com>...
>Yes  I  appologise  I guess you cant call it an air gap ,  you wont see
arcing
>thru air gaps therefore, (power is turned of anyway) ,  I have seen some
minor
>arcing wehn i used to stand outside the back of a shop  i was workgng at
for
>lunch, just out of toowong station heading south,  Theres a section almost
every
>train would let a juscy spark out  as it passed , specially since they were
>accelerating  at that point. (aplied to loco's and comuters)
>
In UK when a train approaches a Neutral Section (i.e. Gap in conductive
catenary between feeder sections) trackside magnets switch off the traction
then on to prevent backfeeds (out of phase) into the new catenary section
when the train enters.

AV