towerman
My status is now now widower
Posts: 2,968
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Post by towerman on Apr 1, 2022 14:35:02 GMT
Was the sectionalisation of traction current on the Central Line improved in the 90s upgrade?In the 70s & 80s if the earth fault alarm operated in Hainault Depot it could be anywhere between Epping & Bond St.Likewise the alarm in Ruislip Depot covered West Ruislip/Ealing Broadway to Bond St.Also in those days escalators & lifts operated on the traction supply.
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Post by Dstock7080 on Apr 1, 2022 14:46:44 GMT
Was the sectionalisation of traction current on the Central Line improved in the 90s upgrade?In the 70s & 80s if the earth fault alarm operated in Hainault Depot it could be anywhere between Epping & Bond St.Likewise the alarm in Ruislip Depot covered West Ruislip/Ealing Broadway to Bond St.Also in those days escalators & lifts operated on the traction supply. Divisions now at: Leyton Bond Street Wood Lane |
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towerman
My status is now now widower
Posts: 2,968
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Post by towerman on Apr 1, 2022 17:23:54 GMT
Thanks for the info,reminded of the time we had an earth fault recorded at Hainault,spent all afternoon isolating trains & checking for track obstructions,turned out to be a fault on an escalator at Gants Hill!
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Colin
Advisor
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Post by Colin on Apr 1, 2022 17:45:30 GMT
Also in those days escalators & lifts operated on the traction supply. They still do! Not directly in that turning off a given traction section takes the escalators & lifts with it, but escalators and lifts can certainly cause earth faults on the traction current system. |
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