Rocksolid Light

Welcome to novaBBS (click a section below)

mail  files  register  newsreader  groups  login

Message-ID:  

Unix will self-destruct in five seconds... 4... 3... 2... 1...


aus+uk / uk.railway / Re: Tilting 802

SubjectAuthor
* Tilting 802Recliner
`* Tilting 802Marland
 +* Tilting 802Recliner
 |`* Tilting 802Anna Noyd-Dryver
 | +* Tilting 802Marland
 | |+* Tilting 802Chris J Dixon
 | ||`* Tilting 802hounslow3@yahoo.co.uk
 | || +- Tilting 802Chris J Dixon
 | || +* Tilting 802Matthew Geier
 | || |+- Tilting 802Marland
 | || |+* Tilting 802martin.coffee
 | || ||+- Tilting 802Bob
 | || ||+* Tilting 802Roland Perry
 | || |||`* Tilting 802Sam Wilson
 | || ||| `* Tilting 802Roland Perry
 | || |||  `* Tilting 802Sam Wilson
 | || |||   `* Tilting 802Marland
 | || |||    +* Tilting 802Matthew Geier
 | || |||    |`- Tilting 802Sam Wilson
 | || |||    `* Tilting 802Bob
 | || |||     `- Tilting 802Sam Wilson
 | || ||`- Tilting 802Anna Noyd-Dryver
 | || |`* Tilting 802martin.coffee
 | || | `- Tilting 802Marland
 | || `* Tilting 802Anna Noyd-Dryver
 | ||  `- Tilting 802Roland Perry
 | |`- Tilting 802Anna Noyd-Dryver
 | +* Tilting 802Sam Wilson
 | |+- Tilting 802Sam Wilson
 | |`* Tilting 802Anna Noyd-Dryver
 | | `* Tilting 802Sam Wilson
 | |  `* Tilting 802Anna Noyd-Dryver
 | |   `* Tilting 802Sam Wilson
 | |    `- Tilting 802Graeme Wall
 | +* Tilting 802Graeme Wall
 | |`- Tilting 802Anna Noyd-Dryver
 | `- Tilting 802Roland Perry
 +* Tilting 802D A Stocks
 |`- Tilting 802martin.coffee
 `- Tilting 802Anna Noyd-Dryver

Pages:12
Re: Tilting 802

<t1k29f$o7v$2@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26232&group=uk.railway#26232

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!usenet.goja.nl.eu.org!3.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: martin.c...@round-midnight.org.uk
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Fri, 25 Mar 2022 09:33:35 +0000
Organization: A noiseless patient Spider
Lines: 35
Message-ID: <t1k29f$o7v$2@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me> <j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me> <t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com> <t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Fri, 25 Mar 2022 09:33:35 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="0424795809850147d3bfc92e3c1039d5";
logging-data="24831"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+GqGnSFFGJ2RX/CyFFakjuUxc29WUf4aI="
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101
Thunderbird/91.5.0
Cancel-Lock: sha1:JZJxw7hWcrW04KjCKCsDaqpNlNA=
In-Reply-To: <t1iiqe$t2f$1@dont-email.me>
Content-Language: en-GB
 by: martin.c...@round-midnight.org.uk - Fri, 25 Mar 2022 09:33 UTC

On 24/03/2022 20:03, Matthew Geier wrote:
> On 25/3/22 04:18, hounslow3@yahoo.co.uk wrote:
>> On 23/03/2022 12:15, Chris J Dixon wrote:
>
>>
>> What if a train encounters a known fixed phase gap on its route? Will
>> the driver have to lower and raise the pan as it the train goes through?
>>
> The system is designed for it.
>
>> There are two phase gaps in separate locations on the lower New Haven
>> Line. The engineer (driver) simply coasts through them, while the pan
>> goes into maximum height position until it makes contact with OHLE on
>> the gaps' other sides.
>
> Their pantographs have height limiters. The system was designed to
> gracefully cope with a physical air-gap. The departure side wire has to
> be carefully strung too as to gracefully 'catch' the fully extended
> pantograph.
> I gather the dutch have opening bridges on electrified lines that have
> no overhead, the train coasts across the non wired bridge.

The UK has one in Norwich.

>
> Some of the early diamond style pantographs could actually fully extend
> and then fall over if they didn't have mechanical limiting.
> And 'capturing' the wire on the other side, if not exactly right could
> knock the pantograph over.
>
> Phase gaps now tend to have a section of non energised wire between two
> 'section isolators' or a short section of some suitably insulating
> material so the pantograph never 'flies free'.
>

Re: Tilting 802

<ja5i27Ff4jiU1@mid.individual.net>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26238&group=uk.railway#26238

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!usenet.goja.nl.eu.org!3.eu.feeder.erje.net!feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: gemeha...@btinternet.co.uk (Marland)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: 25 Mar 2022 09:58:31 GMT
Lines: 30
Message-ID: <ja5i27Ff4jiU1@mid.individual.net>
References: <t1dshs$dlg$1@dont-email.me>
<j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me>
<t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com>
<t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<t1k29f$o7v$2@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-Trace: individual.net UdMW1Kct1pM+5AkvsYReYAYDo9zZEevtVdMeIrHf1+S6P2jFEv
Cancel-Lock: sha1:nxaxzrWWaMlKnW9Fu/ZB9YA06Fw= sha1:Tx0RzzyQuYgafP5OVHTXWhLvfak=
User-Agent: NewsTap/5.5 (iPad)
 by: Marland - Fri, 25 Mar 2022 09:58 UTC

<martin.coffee@round-midnight.org.uk> wrote:
> On 24/03/2022 20:03, Matthew Geier wrote:
>> On 25/3/22 04:18, hounslow3@yahoo.co.uk wrote:
>>> On 23/03/2022 12:15, Chris J Dixon wrote:
>>
>>>
>>> What if a train encounters a known fixed phase gap on its route? Will
>>> the driver have to lower and raise the pan as it the train goes through?
>>>
>> The system is designed for it.
>>
>>> There are two phase gaps in separate locations on the lower New Haven
>>> Line. The engineer (driver) simply coasts through them, while the pan
>>> goes into maximum height position until it makes contact with OHLE on
>>> the gaps' other sides.
>>
>> Their pantographs have height limiters. The system was designed to
>> gracefully cope with a physical air-gap. The departure side wire has to
>> be carefully strung too as to gracefully 'catch' the fully extended
>> pantograph.
>> I gather the dutch have opening bridges on electrified lines that have
>> no overhead, the train coasts across the non wired bridge.
>
> The UK has one in Norwich

I thought that had a rigid bar conductor that swings with the bridge rather
than a gap.

GH

Re: Tilting 802

<t1k3tm$667$1@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26239&group=uk.railway#26239

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: ema...@domain.com (Bob)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Fri, 25 Mar 2022 11:01:26 +0100
Organization: A noiseless patient Spider
Lines: 31
Message-ID: <t1k3tm$667$1@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me> <j9vbgbF94e0U1@mid.individual.net> <t1dtkt$jsp$1@dont-email.me> <t1epnf$2v2$4@dont-email.me> <ja0a0uFekflU1@mid.individual.net> <8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com> <t1i94s$1itd$1@gioia.aioe.org> <t1iiqe$t2f$1@dont-email.me> <e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Info: reader02.eternal-september.org; posting-host="29e4a8780b4f831a130cfbe0bd3f8675";
logging-data="6343"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+7UVCdqZ4UeXKM3pY1HO4fwCfaUkGh3Y0="
User-Agent: Unison/2.1.10
Cancel-Lock: sha1:O6xSVPx6/BDyBJ1tpApZ3QrOjsU=
 by: Bob - Fri, 25 Mar 2022 10:01 UTC

On 2022-03-25 09:32:49 +0000, martin.coffee@round-midnight.org.uk said:

> On 24/03/2022 20:03, Matthew Geier wrote:
>> On 25/3/22 04:18, hounslow3@yahoo.co.uk wrote:
>>> On 23/03/2022 12:15, Chris J Dixon wrote:
>>
>>>
>>> What if a train encounters a known fixed phase gap on its route? Will
>>> the driver have to lower and raise the pan as it the train goes through?
>>>
>> The system is designed for it.
>>
>>> There are two phase gaps in separate locations on the lower New Haven
>>> Line. The engineer (driver) simply coasts through them, while the pan
>>> goes into maximum height position until it makes contact with OHLE on
>>> the gaps' other sides.
>>
>> Their pantographs have height limiters. The system was designed to
>> gracefully cope with a physical air-gap. The departure side wire has to
>> be carefully strung too as to gracefully 'catch' the fully extended
>> pantograph.
>> I gather the dutch have opening bridges on electrified lines that have
>> no overhead, the train coasts across the non wired bridge.
>
> The UK has one in Norwich.

The bridge in Norwich has an overhead conductor energised, so trains
are powered across it.

Robin

Re: Tilting 802

<akFjPDp5zaPiFA7T@perry.uk>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26249&group=uk.railway#26249

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!weretis.net!feeder8.news.weretis.net!3.eu.feeder.erje.net!feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: rol...@perry.co.uk (Roland Perry)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Fri, 25 Mar 2022 11:52:25 +0000
Organization: Roland Perry
Lines: 14
Message-ID: <akFjPDp5zaPiFA7T@perry.uk>
References: <t1dshs$dlg$1@dont-email.me> <j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me> <t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com> <t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
Mime-Version: 1.0
Content-Type: text/plain;charset=us-ascii;format=flowed
X-Trace: individual.net gjzrbZCUGWUPLYJUrRNA3Aa9fO2SMBBVg7ryp5CULl7kXSY2fW
X-Orig-Path: perry.co.uk!roland
Cancel-Lock: sha1:DI4aQnuCegvtBusr5ybnwM1WTf8=
User-Agent: Turnpike/6.07-M (<5xj5fFN1$jhQR1U9PhW62mVNOF>)
 by: Roland Perry - Fri, 25 Mar 2022 11:52 UTC

In message <e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>,
at 09:32:49 on Fri, 25 Mar 2022, martin.coffee@round-midnight.org.uk
remarked:

>> I gather the dutch have opening bridges on electrified lines that have
>> no overhead, the train coasts across the non wired bridge.
>
>The UK has one in Norwich.

I have an idea there's a lift bridge north of Centraal Station in
Amsterdam which has solid overhead conductors. But my Google-fu today,
can't pin it down.
--
Roland Perry

Re: Tilting 802

<t1kc40$8eg$1@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26253&group=uk.railway#26253

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: ukr...@dummy.wislons.fastmail.co.uk (Sam Wilson)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Fri, 25 Mar 2022 12:21:20 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 27
Message-ID: <t1kc40$8eg$1@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me>
<j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me>
<t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com>
<t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
<akFjPDp5zaPiFA7T@perry.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 25 Mar 2022 12:21:20 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="fe57b424746e89c7cc2550c6eba8ec77";
logging-data="8656"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/uB6VyTK1gc2lGeza0Ptf2"
User-Agent: NewsTap/5.5 (iPad)
Cancel-Lock: sha1:5Tu441qahSh4zp0MpXS5MSibf8s=
sha1:0aiKvJ3LO/TgwSi1zzNqYXT+QxE=
 by: Sam Wilson - Fri, 25 Mar 2022 12:21 UTC

Roland Perry <roland@perry.co.uk> wrote:
> In message <e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>,
> at 09:32:49 on Fri, 25 Mar 2022, martin.coffee@round-midnight.org.uk
> remarked:
>
>>> I gather the dutch have opening bridges on electrified lines that have
>>> no overhead, the train coasts across the non wired bridge.
>>
>> The UK has one in Norwich.
>
> I have an idea there's a lift bridge north of Centraal Station in
> Amsterdam which has solid overhead conductors. But my Google-fu today,
> can't pin it down.

The Calandbrug near Rotterdam has an electrified line across it where there
is bar conductor on the lifting and transition sections. Google maps on my
iPad still won’t let me share a street view URL, but here’s the location.
This kind of thing is likely to be quite common in the Netherlands, I’d
have thought.

<https://goo.gl/maps/fWNTVBw2RWE6febU8>

Sam

--
The entity formerly known as Sam.Wilson@ed.ac.uk
Spit the dummy to reply

Re: Tilting 802

<KzOX6hsU7cPiFAYx@perry.uk>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26280&group=uk.railway#26280

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!aioe.org!news.uzoreto.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: rol...@perry.co.uk (Roland Perry)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Fri, 25 Mar 2022 14:16:52 +0000
Organization: Roland Perry
Lines: 27
Message-ID: <KzOX6hsU7cPiFAYx@perry.uk>
References: <t1dshs$dlg$1@dont-email.me> <j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me> <t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com> <t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
<akFjPDp5zaPiFA7T@perry.uk> <t1kc40$8eg$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain;charset=utf-8;format=flowed
Content-Transfer-Encoding: 8bit
X-Trace: individual.net QhErQcvfGmVhvSwIUHGBEwKBVD8B8CTPsYkSRlKz/rqK8fudn9
X-Orig-Path: perry.co.uk!roland
Cancel-Lock: sha1:H6a7jQM9j72KWFlA144uh9g1GOs=
User-Agent: Turnpike/6.07-M (<52l5fZdV$jhVf1U93hT62mJV+y>)
 by: Roland Perry - Fri, 25 Mar 2022 14:16 UTC

In message <t1kc40$8eg$1@dont-email.me>, at 12:21:20 on Fri, 25 Mar
2022, Sam Wilson <ukr@dummy.wislons.fastmail.co.uk> remarked:
>Roland Perry <roland@perry.co.uk> wrote:
>> In message <e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>,
>> at 09:32:49 on Fri, 25 Mar 2022, martin.coffee@round-midnight.org.uk
>> remarked:
>>
>>>> I gather the dutch have opening bridges on electrified lines that have
>>>> no overhead, the train coasts across the non wired bridge.
>>>
>>> The UK has one in Norwich.
>>
>> I have an idea there's a lift bridge north of Centraal Station in
>> Amsterdam which has solid overhead conductors. But my Google-fu today,
>> can't pin it down.
>
>The Calandbrug near Rotterdam has an electrified line across it where there
>is bar conductor on the lifting and transition sections. Google maps on my
>iPad still won’t let me share a street view URL, but here’s the location.
>This kind of thing is likely to be quite common in the Netherlands, I’d
>have thought.
>
><https://goo.gl/maps/fWNTVBw2RWE6febU8>

https://goo.gl/maps/pCKBFreQYTdAXqbf7
--
Roland Perry

Re: Tilting 802

<t1kmqc$367$1@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26285&group=uk.railway#26285

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: ukr...@dummy.wislons.fastmail.co.uk (Sam Wilson)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Fri, 25 Mar 2022 15:23:56 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 36
Message-ID: <t1kmqc$367$1@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me>
<j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me>
<t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com>
<t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
<akFjPDp5zaPiFA7T@perry.uk>
<t1kc40$8eg$1@dont-email.me>
<KzOX6hsU7cPiFAYx@perry.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 25 Mar 2022 15:23:56 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="fe57b424746e89c7cc2550c6eba8ec77";
logging-data="3271"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18qNP9dafgGi7I2fzCEkiwx"
User-Agent: NewsTap/5.5 (iPad)
Cancel-Lock: sha1:0z+j4/hsMjfWDao+M4uHrmGYRb8=
sha1:0cKsMPSStQkElnQgL/sFHld7RsA=
 by: Sam Wilson - Fri, 25 Mar 2022 15:23 UTC

Roland Perry <roland@perry.co.uk> wrote:
> In message <t1kc40$8eg$1@dont-email.me>, at 12:21:20 on Fri, 25 Mar
> 2022, Sam Wilson <ukr@dummy.wislons.fastmail.co.uk> remarked:
>> Roland Perry <roland@perry.co.uk> wrote:
>>> In message <e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>,
>>> at 09:32:49 on Fri, 25 Mar 2022, martin.coffee@round-midnight.org.uk
>>> remarked:
>>>
>>>>> I gather the dutch have opening bridges on electrified lines that have
>>>>> no overhead, the train coasts across the non wired bridge.
>>>>
>>>> The UK has one in Norwich.
>>>
>>> I have an idea there's a lift bridge north of Centraal Station in
>>> Amsterdam which has solid overhead conductors. But my Google-fu today,
>>> can't pin it down.
>>
>> The Calandbrug near Rotterdam has an electrified line across it where there
>> is bar conductor on the lifting and transition sections. Google maps on my
>> iPad still won’t let me share a street view URL, but here’s the location.
>> This kind of thing is likely to be quite common in the Netherlands, I’d
>> have thought.
>>
>> <https://goo.gl/maps/fWNTVBw2RWE6febU8>
>
> https://goo.gl/maps/pCKBFreQYTdAXqbf7

Thank you. One of the joints is just over your left shoulder in that view.
It is 1500 V DC, of course. I suspect 25 kV AC would require greater
clearances, both from the structure and possibly from the road.

Sam

--
The entity formerly known as Sam.Wilson@ed.ac.uk
Spit the dummy to reply

Re: Tilting 802

<ja6ao6FjpmiU1@mid.individual.net>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26305&group=uk.railway#26305

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!usenet.goja.nl.eu.org!3.eu.feeder.erje.net!feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: gemeha...@btinternet.co.uk (Marland)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: 25 Mar 2022 16:59:50 GMT
Lines: 35
Message-ID: <ja6ao6FjpmiU1@mid.individual.net>
References: <t1dshs$dlg$1@dont-email.me>
<j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me>
<t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com>
<t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
<akFjPDp5zaPiFA7T@perry.uk>
<t1kc40$8eg$1@dont-email.me>
<KzOX6hsU7cPiFAYx@perry.uk>
<t1kmqc$367$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-Trace: individual.net fRCAm5cHuDIjaGzNTazAqQlFug25Xh+ikUz6uJJgYU8YGECAJS
Cancel-Lock: sha1:+VUioKrLR+Czx0MSniLntEvbsyA= sha1:VSDLrLjRDdDOMx6X73RegJpeU+8=
User-Agent: NewsTap/5.5 (iPad)
 by: Marland - Fri, 25 Mar 2022 16:59 UTC

Sam Wilson <ukr@dummy.wislons.fastmail.co.uk> wrote:

>>>>
>>>> I have an idea there's a lift bridge north of Centraal Station in
>>>> Amsterdam which has solid overhead conductors. But my Google-fu today,
>>>> can't pin it down.
>>>
>>> The Calandbrug near Rotterdam has an electrified line across it where there
>>> is bar conductor on the lifting and transition sections. Google maps on my
>>> iPad still won’t let me share a street view URL, but here’s the location.
>>> This kind of thing is likely to be quite common in the Netherlands, I’d
>>> have thought.
>>>
>>> <https://goo.gl/maps/fWNTVBw2RWE6febU8>
>>
>> https://goo.gl/maps/pCKBFreQYTdAXqbf7
>
> Thank you. One of the joints is just over your left shoulder in that view.
> It is 1500 V DC, of course. I suspect 25 kV AC would require greater
> clearances, both from the structure and possibly from the road.
>
> Sam
>

Isn’t that the relatively new freight route from Europoort which is already
at 25kV?
The installation looks too light for their 1500V DC especially on a route
that would be handling heavy freight, much of the Netherlands DC network
now has closely spaced twin contact wires so they can get enough power to
the train but it still hasn’t the capability to match 25kV.
Their long term aim is to convert it all .

GH

Re: Tilting 802

<t1l4ln$6l5$2@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26361&group=uk.railway#26361

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: ann...@noyd-dryver.com (Anna Noyd-Dryver)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Fri, 25 Mar 2022 19:20:23 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 64
Message-ID: <t1l4ln$6l5$2@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me>
<j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me>
<t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com>
<t1i94s$1itd$1@gioia.aioe.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 25 Mar 2022 19:20:23 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="c400983b70bd62d194535e43ab59f819";
logging-data="6821"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+8C2jVRw4xjjX5rniEBY6oom13rQ+7vAU="
User-Agent: NewsTap/5.5 (iPhone/iPod Touch)
Cancel-Lock: sha1:cOX87OUG3DFzLUljNGEdK3lS7Bw=
sha1:udBNXUURMzjNlqRV+uNzjMMAgWg=
 by: Anna Noyd-Dryver - Fri, 25 Mar 2022 19:20 UTC

hounslow3@yahoo.co.uk <hounslow3@yahoo.co.uk> wrote:
> On 23/03/2022 12:15, Chris J Dixon wrote:
>> Marland wrote:
>>
>>> Is there any standard procedure for lowering a pantograph after a
>>> derailment either automatically or manually?
>>
>> Generally pantographs have overheight detection, which when
>> triggers returns it to the housed position. This should certainly
>> operate if the pan has slipped sideways off the wire.
>>
>
> What if a train encounters a known fixed phase gap on its route? Will
> the driver have to lower and raise the pan as it the train goes through?
>
> There are two phase gaps in separate locations on the lower New Haven
> Line. The engineer (driver) simply coasts through them, while the pan
> goes into maximum height position until it makes contact with OHLE on
> the gaps' other sides.
>

In the UK we have Neutral Sections to separate sections of OLE which might
be supplied by different phases of the grid supply.

A neutral section in basic form consists of magnets in the track which
cause the train to open the VCB (vacuum circuit breaker; on older stock
ABB, Air Blast Breaker), the train’s main circuit breaker which cuts off
current to the transformer. Then 80-100m later there's an insulated section
of wire (ok technically a section of insulator instead of the wire but
ykwim) 5m long, an earthed section 5m long, another 5m insulator, then
50-80m away another (identical) set of magnets to re-close the VCB.

The pantograph stays in contact with the wire throughout.

Modern 'carrier wire neutral sections' (CWNS) are slightly different (and
over twice the total length!) but achieve the same basic thing.

There's nowhere in the UK where trains deliberately drive off the wire with
pantograph raised.

> There are ways on M-series trains, however, to immediately drop the pan
> in an emergency. By that, I mean that it will not just return to housed
> position normally, but that it would literally drop.
>
> That action can damage the pantograph coach as well as the pantograph
> itself, mind you, and so you need a pretty good reason for that.
>

That sounds like utterly terrible design.

A UK-spec pantograph is held raised by air and drops under gravity (there
are springs too but that's the basic principle). Without the air pressure
it will drop back into its normal resting position, which has rubber
(presumably) stops for a soft-ish landing. The speed it drops AIUI is the
same regardless of whether that was initiated by driver, train systems or
ADD (auto-drop device). If there was somehow sudden complete loss of air
pressure (broken air supply pipe, perhaps) it would presumably drop a
little faster than the usual rate of air being allowed out via the
appropriate valve, but I very much doubt that it would cause damage to
either pantograph or train roof/body structure!

Anna Noyd-Dryver

Re: Tilting 802

<t1l4lo$6l5$3@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26362&group=uk.railway#26362

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: ann...@noyd-dryver.com (Anna Noyd-Dryver)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Fri, 25 Mar 2022 19:20:24 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 31
Message-ID: <t1l4lo$6l5$3@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me>
<j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me>
<t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com>
<t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 25 Mar 2022 19:20:24 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="c400983b70bd62d194535e43ab59f819";
logging-data="6821"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19XSKIytZMMVRJmlbpcDu59Fu5gmC2bKYE="
User-Agent: NewsTap/5.5 (iPhone/iPod Touch)
Cancel-Lock: sha1:L2KQcPRfK7sBPRMgUw2SsiK2MOk=
sha1:8ST2OikdMxfgQVla1w4ln3tb2zw=
 by: Anna Noyd-Dryver - Fri, 25 Mar 2022 19:20 UTC

<martin.coffee@round-midnight.org.uk> wrote:
> On 24/03/2022 20:03, Matthew Geier wrote:
>> On 25/3/22 04:18, hounslow3@yahoo.co.uk wrote:
>>> On 23/03/2022 12:15, Chris J Dixon wrote:
>>
>>>
>>> What if a train encounters a known fixed phase gap on its route? Will
>>> the driver have to lower and raise the pan as it the train goes through?
>>>
>> The system is designed for it.
>>
>>> There are two phase gaps in separate locations on the lower New Haven
>>> Line. The engineer (driver) simply coasts through them, while the pan
>>> goes into maximum height position until it makes contact with OHLE on
>>> the gaps' other sides.
>>
>> Their pantographs have height limiters. The system was designed to
>> gracefully cope with a physical air-gap. The departure side wire has to
>> be carefully strung too as to gracefully 'catch' the fully extended
>> pantograph.
>> I gather the dutch have opening bridges on electrified lines that have
>> no overhead, the train coasts across the non wired bridge.
>
> The UK has one in Norwich.
>

Only without the coasting part.

Anna Noyd-Dryver

Re: Tilting 802

<t1lj2n$575$1@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26392&group=uk.railway#26392

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: matt...@sleeper.apana.org.au (Matthew Geier)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Sat, 26 Mar 2022 10:26:15 +1100
Organization: A noiseless patient Spider
Lines: 22
Message-ID: <t1lj2n$575$1@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me> <j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me> <t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com> <t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
<akFjPDp5zaPiFA7T@perry.uk> <t1kc40$8eg$1@dont-email.me>
<KzOX6hsU7cPiFAYx@perry.uk> <t1kmqc$367$1@dont-email.me>
<ja6ao6FjpmiU1@mid.individual.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 25 Mar 2022 23:26:15 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="58c0e58807b306c39a7eedaf4ac3afa4";
logging-data="5349"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX195ygC7iJJZxc8/yrphO/xJ"
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101
Thunderbird/91.7.0
Cancel-Lock: sha1:CVjhfKo6yAKrS7dDL4b9BkhbnXQ=
In-Reply-To: <ja6ao6FjpmiU1@mid.individual.net>
Content-Language: en-AU
 by: Matthew Geier - Fri, 25 Mar 2022 23:26 UTC

On 26/3/22 03:59, Marland wrote:

>> Thank you. One of the joints is just over your left shoulder in that view.
>> It is 1500 V DC, of course. I suspect 25 kV AC would require greater
>> clearances, both from the structure and possibly from the road.
>>
>> Sam
>>
>
> Isn’t that the relatively new freight route from Europoort which is already
> at 25kV?
>

At the joining point between the lift span and the fixed span there is a
warning plate '! 25kV !' on the contact mechanism that electrically
connects the lift span to the fixed span.
The plates are only visible at one end, at the other it looks like
street-views auto-number plate hiding algorithm has blurred out the
warning signs.

This is different from coasting under an air gap through - they have
gone to some trouble to ensure the train has continuous power.

Re: Tilting 802

<fuSC9GGmHrPiFArw@perry.uk>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26399&group=uk.railway#26399

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!aioe.org!news.uzoreto.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: rol...@perry.co.uk (Roland Perry)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Sat, 26 Mar 2022 06:25:42 +0000
Organization: Roland Perry
Lines: 37
Message-ID: <fuSC9GGmHrPiFArw@perry.uk>
References: <t1dshs$dlg$1@dont-email.me> <j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me> <t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com> <t1i94s$1itd$1@gioia.aioe.org>
<t1l4ln$6l5$2@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain;charset=utf-8;format=flowed
Content-Transfer-Encoding: 8bit
X-Trace: individual.net qgikDZ1p8jSTLEnYUwkkfwU8icd9CiXAa7PSLf9It/MszzROrS
X-Orig-Path: perry.co.uk!roland
Cancel-Lock: sha1:tPHKVO+eMeYnO2AUPUcRB8pSgIw=
User-Agent: Turnpike/6.07-M (<5Gi5fZLx$jxkd1U9sxT62mJKIn>)
 by: Roland Perry - Sat, 26 Mar 2022 06:25 UTC

In message <t1l4ln$6l5$2@dont-email.me>, at 19:20:23 on Fri, 25 Mar
2022, Anna Noyd-Dryver <anna@noyd-dryver.com> remarked:

>In the UK we have Neutral Sections to separate sections of OLE which might
>be supplied by different phases of the grid supply.
>
>A neutral section in basic form consists of magnets in the track which
>cause the train to open the VCB (vacuum circuit breaker; on older stock
>ABB, Air Blast Breaker),

And if you are sat underneath the pantograph on something like a 317,
you almost need ear defenders.

>the train’s main circuit breaker which cuts off
>current to the transformer. Then 80-100m later there's an insulated section
>of wire (ok technically a section of insulator instead of the wire but
>ykwim) 5m long, an earthed section 5m long, another 5m insulator, then
>50-80m away another (identical) set of magnets to re-close the VCB.
>
>The pantograph stays in contact with the wire throughout.
>
>Modern 'carrier wire neutral sections' (CWNS) are slightly different (and
>over twice the total length!) but achieve the same basic thing.
>
>There's nowhere in the UK where trains deliberately drive off the wire with
>pantograph raised.

A Thameslink train drove off the wires at Blackfriars a few years ago,
causing great hilarity all round.

https://www.bbc.co.uk/news/uk-england-london-25576100

Other reports at the time said that the overhead obstruction was too
close to the end of the wires to leave time for the automatic safety
device to be able to kick in and lower the pantograph.
--
Roland Perry

Re: Tilting 802

<t1n55p$18q$1@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26438&group=uk.railway#26438

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: ema...@domain.com (Bob)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Sat, 26 Mar 2022 14:41:13 +0100
Organization: A noiseless patient Spider
Lines: 45
Message-ID: <t1n55p$18q$1@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me> <j9vbgbF94e0U1@mid.individual.net> <t1dtkt$jsp$1@dont-email.me> <t1epnf$2v2$4@dont-email.me> <ja0a0uFekflU1@mid.individual.net> <8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com> <t1i94s$1itd$1@gioia.aioe.org> <t1iiqe$t2f$1@dont-email.me> <e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk> <akFjPDp5zaPiFA7T@perry.uk> <t1kc40$8eg$1@dont-email.me> <KzOX6hsU7cPiFAYx@perry.uk> <t1kmqc$367$1@dont-email.me> <ja6ao6FjpmiU1@mid.individual.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Info: reader02.eternal-september.org; posting-host="de8f00290db01287b51b5270c344f647";
logging-data="1306"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX180hG3IRrAVVLFBncG5pNxRD/DcQAmCs0E="
User-Agent: Unison/2.1.10
Cancel-Lock: sha1:OQN9x9fKLa3depn8lMPtXA/C2ww=
 by: Bob - Sat, 26 Mar 2022 13:41 UTC

On 2022-03-25 16:59:50 +0000, Marland said:

> Sam Wilson <ukr@dummy.wislons.fastmail.co.uk> wrote:
>
>>>>>
>>>>> I have an idea there's a lift bridge north of Centraal Station in
>>>>> Amsterdam which has solid overhead conductors. But my Google-fu today,
>>>>> can't pin it down.
>>>>
>>>> The Calandbrug near Rotterdam has an electrified line across it where there
>>>> is bar conductor on the lifting and transition sections. Google maps on my
>>>> iPad still won’t let me share a street view URL, but here’s the location.
>>>> This kind of thing is likely to be quite common in the Netherlands, I’d
>>>> have thought.
>>>>
>>>> <https://goo.gl/maps/fWNTVBw2RWE6febU8>
>>>
>>> https://goo.gl/maps/pCKBFreQYTdAXqbf7
>>
>> Thank you. One of the joints is just over your left shoulder in that view.
>> It is 1500 V DC, of course. I suspect 25 kV AC would require greater
>> clearances, both from the structure and possibly from the road.
>>
>> Sam
>>
>
> Isn’t that the relatively new freight route from Europoort which is already
> at 25kV?
> The installation looks too light for their 1500V DC especially on a route
> that would be handling heavy freight, much of the Netherlands DC network
> now has closely spaced twin contact wires so they can get enough power to
> the train but it still hasn’t the capability to match 25kV.
> Their long term aim is to convert it all .

The Betuweroute links the port of Rotterdam with the German border, and
it is built with 25 kV overhead and structural clearances that would
allow for things like double stacked containers in case that capacity
is wanted in the future. Of course it was built without things like
swing or lifting bridges. The high speed line in the Netherlands is
also 25 kV. At one stage there was an ambition to convert the NS
network from 1500 V DC to 25 kV AC, but this is little more than a long
term ambition rather than an actual project.

Robin

Re: Tilting 802

<t1s072$f77$1@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26611&group=uk.railway#26611

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: ukr...@dummy.wislons.fastmail.co.uk (Sam Wilson)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Mon, 28 Mar 2022 09:47:14 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 35
Message-ID: <t1s072$f77$1@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me>
<j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me>
<t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com>
<t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
<akFjPDp5zaPiFA7T@perry.uk>
<t1kc40$8eg$1@dont-email.me>
<KzOX6hsU7cPiFAYx@perry.uk>
<t1kmqc$367$1@dont-email.me>
<ja6ao6FjpmiU1@mid.individual.net>
<t1lj2n$575$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Mon, 28 Mar 2022 09:47:14 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="90cd6930a13df41fa72ab6908e45fc55";
logging-data="15591"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX192g8UN33Abd4NmuBDqCKa9"
User-Agent: NewsTap/5.5 (iPad)
Cancel-Lock: sha1:lwV9O9dGgxvrHv2zKiHHxfviXJ0=
sha1:PhQYk/cstCiPJ3r6RM118KODtVw=
 by: Sam Wilson - Mon, 28 Mar 2022 09:47 UTC

Matthew Geier <matthew@sleeper.apana.org.au> wrote:
> On 26/3/22 03:59, Marland wrote:
>
>>> Thank you. One of the joints is just over your left shoulder in that view.
>>> It is 1500 V DC, of course. I suspect 25 kV AC would require greater
>>> clearances, both from the structure and possibly from the road.
>>>
>>> Sam
>>>
>>
>> Isn’t that the relatively new freight route from Europoort which is already
>> at 25kV?
>>
>
> At the joining point between the lift span and the fixed span there is a
> warning plate '! 25kV !' on the contact mechanism that electrically
> connects the lift span to the fixed span.
> The plates are only visible at one end, at the other it looks like
> street-views auto-number plate hiding algorithm has blurred out the
> warning signs.
>
> This is different from coasting under an air gap through - they have
> gone to some trouble to ensure the train has continuous power.

Oh,right. I hadn’t clocked that that was part of the Betuweroute; the only
map I checked (Wikipedia - yes, I know) doesn’t match the geography of that
particular section of line.

Sam

--
The entity formerly known as Sam.Wilson@ed.ac.uk
Spit the dummy to reply

Re: Tilting 802

<t1s072$f77$2@dont-email.me>

 copy mid

https://www.novabbs.com/aus+uk/article-flat.php?id=26612&group=uk.railway#26612

 copy link   Newsgroups: uk.railway
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: ukr...@dummy.wislons.fastmail.co.uk (Sam Wilson)
Newsgroups: uk.railway
Subject: Re: Tilting 802
Date: Mon, 28 Mar 2022 09:47:15 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 53
Message-ID: <t1s072$f77$2@dont-email.me>
References: <t1dshs$dlg$1@dont-email.me>
<j9vbgbF94e0U1@mid.individual.net>
<t1dtkt$jsp$1@dont-email.me>
<t1epnf$2v2$4@dont-email.me>
<ja0a0uFekflU1@mid.individual.net>
<8n3m3hdc71qusgl0tidi18pj2c8hmm2nl8@4ax.com>
<t1i94s$1itd$1@gioia.aioe.org>
<t1iiqe$t2f$1@dont-email.me>
<e08ef217-10dd-fe6d-5fc8-9a11edb96406@round-midnight.org.uk>
<akFjPDp5zaPiFA7T@perry.uk>
<t1kc40$8eg$1@dont-email.me>
<KzOX6hsU7cPiFAYx@perry.uk>
<t1kmqc$367$1@dont-email.me>
<ja6ao6FjpmiU1@mid.individual.net>
<t1n55p$18q$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Mon, 28 Mar 2022 09:47:15 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="90cd6930a13df41fa72ab6908e45fc55";
logging-data="15591"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/htruG9Av5C3Hq9c7vNMeR"
User-Agent: NewsTap/5.5 (iPad)
Cancel-Lock: sha1:G3pRt+eLCjnKLzaeaVO0Mx7tdhI=
sha1:UnP3v/i8njSM9NK8fiBW2T5jS+M=
 by: Sam Wilson - Mon, 28 Mar 2022 09:47 UTC

Bob <email@domain.com> wrote:
> On 2022-03-25 16:59:50 +0000, Marland said:
>
>> Sam Wilson <ukr@dummy.wislons.fastmail.co.uk> wrote:
>>
>>>>>>
>>>>>> I have an idea there's a lift bridge north of Centraal Station in
>>>>>> Amsterdam which has solid overhead conductors. But my Google-fu today,
>>>>>> can't pin it down.
>>>>>
>>>>> The Calandbrug near Rotterdam has an electrified line across it where there
>>>>> is bar conductor on the lifting and transition sections. Google maps on my
>>>>> iPad still won’t let me share a street view URL, but here’s the location.
>>>>> This kind of thing is likely to be quite common in the Netherlands, I’d
>>>>> have thought.
>>>>>
>>>>> <https://goo.gl/maps/fWNTVBw2RWE6febU8>
>>>>
>>>> https://goo.gl/maps/pCKBFreQYTdAXqbf7
>>>
>>> Thank you. One of the joints is just over your left shoulder in that view.
>>> It is 1500 V DC, of course. I suspect 25 kV AC would require greater
>>> clearances, both from the structure and possibly from the road.
>>>
>>> Sam
>>>
>>
>> Isn’t that the relatively new freight route from Europoort which is already
>> at 25kV?
>> The installation looks too light for their 1500V DC especially on a route
>> that would be handling heavy freight, much of the Netherlands DC network
>> now has closely spaced twin contact wires so they can get enough power to
>> the train but it still hasn’t the capability to match 25kV.
>> Their long term aim is to convert it all .
>
> The Betuweroute links the port of Rotterdam with the German border, and
> it is built with 25 kV overhead and structural clearances that would
> allow for things like double stacked containers in case that capacity
> is wanted in the future. Of course it was built without things like
> swing or lifting bridges. The high speed line in the Netherlands is
> also 25 kV. At one stage there was an ambition to convert the NS
> network from 1500 V DC to 25 kV AC, but this is little more than a long
> term ambition rather than an actual project.

Oh. But another response says that this is 25 kV and therefore must be
part of the Betuweroute, and this is definitely a lifting bridge - I’ve
been there when it lifted.

Sam

--
The entity formerly known as Sam.Wilson@ed.ac.uk
Spit the dummy to reply

Pages:12
server_pubkey.txt

rocksolid light 0.9.7
clearnet tor