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| London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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#1
September 20th 10, 07:19 PM
posted to uk.transport.london,uk.railway
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Could isolation transformers prevent electrocution on LU tracks?
On London Underground the DC traction current circuit to and from the
trains is via an insulated third live rail and an insulated fourth live rail, and the earthed running rails are not used for traction current. Would it be possible to use an isolation transformer to prevent the electrocution of a person who touched one of the live rails on this type of railway, or possibly on an AC version of it? My understanding, which I am sure will be corrected, is that an isolation transformer could prevent the electrocution of a person who connected one live rail to earth, but would not prevent the electrocution of a person who connected the third live rail and fourth live rail together. I would be very grateful to anyone who can explain further. Dominic |
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