Crewe extra OLE

[Morpethcurve]

I noticed there are double or triple cables for platforms 5 and 6. Is this because of the high starting current for class 390s?

 

[AndrewE]

I assume it is because of OLE wires diverging at junctions just north of the road overbridge, the ends being tied off/tensioned further south.

 

[GRALISTAIR]

I noticed there are double or triple cables for platforms 5 and 6. Is this because of the high starting current for class 390s?

It was done that way in the 1985 rebuild iirc

 

[Mag_seven]

I noticed there are double or triple cables for platforms 5 and 6. Is this because of the high starting current for class 390s?

Its been like that for years long before Class 390s

 

[Jan]

And a high starting current would rather surprise me: With AC stock (all the more modern-ish three-phase AC), current draw is simply proportional to the power being used, and the power in turn is tractive effort times speed. So even with a high tractive effort, at low speeds the train doesn't actually require much power and therefore current.
It's different on old-style DC stock, where motor voltage and power is controlled via resistors and you therefore end up drawing a large current from the OHLE/third rail even at low speeds, but initially burn most of the power in the resistors.

 

[Richard Scott]

Certainly there in 1988 as have a photo of 87101 leaving with a passenger train and the 3 wires are evident in the photo.

 

[59CosG95]

I noticed there are double or triple cables for platforms 5 and 6. Is this because of the high starting current for class 390s?

The OLE there certainly seems to cope with current EMU volumes (390s and all others); while Auto Transformer Feeding is in place between the Home Counties & Whitmore (Staffs), and between Weaver Jn & the Preston area (IIRC), the Crewe area still seems to have Return Conductors, although ATF Insulators are up and potentially awaiting wires in the Chorlton & Madeley areas to the south of Crewe.

 

[twpsaesneg]

I assume it is because of OLE wires diverging at junctions just north of the road overbridge, the ends being tied off/tensioned further south.

This is the correct answer.
There is nowhere convenient to anchor the wires in the station area, so they run through and anchor outside of it, so 3 wire runs through the platforms themselves.

 

[Elecman]

The OLE there certainly seems to cope with current EMU volumes (390s and all others); while Auto Transformer Feeding is in place between the Home Counties & Whitmore (Staffs), and between Weaver Jn & the Preston area (IIRC), the Crewe area still seems to have Return Conductors, although ATF Insulators are up and potentially awaiting wires in the Chorlton & Madeley areas to the south of Crewe.

Waiting for the new Crewe ATFeeder station to be commissioned, there are AT sectioning units at Betley Road going south towards Whitmore and Winsford going North towards Weaver