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Greater Anglia's Stadler Flirt - Class 745 & 755


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  • RMweb Gold
1 hour ago, hexagon789 said:

 

So does that mean the signalling needs modifications to prevent interference from the new trains? (Rather as with the northern ECML.)

I hope not.  What it should mean is that the train is currently being tested in respect of the various emissions it generates to ensure that it is compatible with the signalling system - that inevitably has to be done under special arrangements because it might cause a signalling problem;  That procedure is nothing new and we were running train/traction unit test programmes under those sort of conditions a quarter of a century ago and since privatisation they will also have been subject to additional assessments.  

 

If the train is found not to be compliant then it should be made compliant by whatever means and extra equipment or modifications are necessary to achieve compliance.  But one would have hoped that the train's designers would have read the relevant Group Standards before the thing was shipped to the customer and it would therefore be found to be compliant.

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19 minutes ago, The Stationmaster said:

I hope not.  What it should mean is that the train is currently being tested in respect of the various emissions it generates to ensure that it is compatible with the signalling system - that inevitably has to be done under special arrangements because it might cause a signalling problem;  That procedure is nothing new and we were running train/traction unit test programmes under those sort of conditions a quarter of a century ago and since privatisation they will also have been subject to additional assessments.  

 

If the train is found not to be compliant then it should be made compliant by whatever means and extra equipment or modifications are necessary to achieve compliance.  But one would have hoped that the train's designers would have read the relevant Group Standards before the thing was shipped to the customer and it would therefore be found to be compliant.

 

Thank you for explaining it. 

 

So it's the trains that need to be made compliant with the signalling in the sense of emissions and not the other way around.

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7 hours ago, hexagon789 said:

 

Thank you for explaining it. 

 

So it's the trains that need to be made compliant with the signalling in the sense of emissions and not the other way around.

Yes and no: both the infrastructure and the rolling stock have to be compliant with the relevant standards. In the case of the ECML it seems that the necessary protections to the interlockings had not been put in place and these are now being modified.

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Thats pretty much summed it up. The class 360s, when they were tested, put signals back on the adjacent line between diss and Norwich, so now we have SPZs for anything thats new or modified. The refurb'd 321s also had SPZ protection on the clacton branch when they were tested on their return.

Edited by Siggie in the east
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There are test moves planned all week this week starting tonight with a commissioning run for 755408, Norwich-diss-Norwich.

Monday night is especially busy with 755407 on a Norwich-Stratford-Norwich trip and at the same time 755405+755408 on a double pantograph test between Norwich and diss. Monday during the day, 405+408 are on a double pantograph test, same route.

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  • RMweb Gold

Today saw - I think - the first daylight running of a pair of 755s

 

 

Tivetshall
21 March 2019
755408 and 755405 on 5Q61, 09:03, Norwich C.PT. T.&R.S.M.D - Diss(09:33) - under test, pantographs up
and back as
755408 and 755405 on 5Q61, 09:03, Norwich C.PT. T.&R.S.M.D - Diss (09:33) - under test, pantographs up

I believe these were under diesel power with the pantographs up for testing.

 

DAS809546.jpg.ab9ce294da7853971a223e63bd727201.jpgDAS809552.jpg.a388f51fa78bf4fab792bfd95d6d18a1.jpgDAS809581.jpg.611064e22317eac085f35ab595f9e5fc.jpgDAS809592.jpg.b49bff22181edd854e13c8b29cb351a1.jpg

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  • RMweb Gold
4 hours ago, Satan's Goldfish said:

Roughly when are the first 3 car units due to arrive?

 

What's the count so far on deliveries? I've lost count but guessing it's at least 3x 4 car units and 1x 12.

 

1 x 12 and 4 x 4 I think we're up to.

 

Asking when the 3 cars will arrive is a bit like asking when the resignalling will reach from Brundall to Yarmouth and Lowestoft - one day. (May 2020 is the latest rumour for the resignalling)

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1 hour ago, Covkid said:

 

Are you sure that isn't Crewe North box with a class 83 dragging that 755 !!!!!

I had to look twice at the traction myself. Not exactly "filling the envelope" wrt the Berne Gauge is she?!

However, noting the layout, it became apparent it wasn't the UK. They like the double-slip on the continent don't they?! Six in a row at Lille...

 

C6T. 

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12 hours ago, beast66606 said:

Today saw - I think - the first daylight running of a pair of 755s

 

 

Tivetshall
21 March 2019
755408 and 755405 on 5Q61, 09:03, Norwich C.PT. T.&R.S.M.D - Diss(09:33) - under test, pantographs up
and back as
755408 and 755405 on 5Q61, 09:03, Norwich C.PT. T.&R.S.M.D - Diss (09:33) - under test, pantographs up

I believe these were under diesel power with the pantographs up for testing.

 

DAS809546.jpg.ab9ce294da7853971a223e63bd727201.jpgDAS809552.jpg.a388f51fa78bf4fab792bfd95d6d18a1.jpgDAS809581.jpg.611064e22317eac085f35ab595f9e5fc.jpgDAS809592.jpg.b49bff22181edd854e13c8b29cb351a1.jpg

Yep, it's both the first running of a pair of 755s and the first double pantograph test. It was running on diesel as they aren't authorised to draw power yet unless they are in a SPZ. Great photos!

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I'm sort of surprised they didn't go with a special livery for the Stansted Express units.

I know it means greater flexability but from an outsider, if I was on the Stansted Express train, I'd be looking for something that's a little more obvious than some simple wording.

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2 hours ago, Siggie in the east said:

There were meant to be 3new units being delivered today on 5Q01 from ripple lane  through colchester at 06:40? I'm assuming they didnt run then.

 

Caped due to HS1 possession - and I don't mean poltergeists !

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  • RMweb Gold

One more from yesterdays testing - the crossing is skewed in case anyone thinks I'm inside any fences.

 

Tivetshall

28 March 2019

755405, 755407 and 755408 on 5Q72, 14:39, Diss - Norwich C.PT. T.&R.S.M.D (15:00)

DAS810634.jpg.ae5f577fb09c4513cba1f3b75ec0e6ae.jpg

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