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<div class="moz-cite-prefix">On 06/14/2016 02:58 PM, Russell Reiter
via talk wrote:<br>
</div>
<blockquote
cite="mid:CAPik5Mzgwyhy3JizbZhuNwMYD1ZSz8hdqg5+6ByZ7hk+VRE6nA@mail.gmail.com"
type="cite">
<p dir="ltr"><br>
<snip><br>
> Streetcars use 600V as does the subway. The new Eglinton
line will be<br>
> 750V though and won't have loops for turning around.</p>
<p dir="ltr">You don't think that the TTC might be forward
planning for 750V all around? Remember it was TTC staff I spoke
to who told me the change was to accommodate higher voltage.</p>
<br>
</blockquote>
It is possible.<br>
Not saying its so, but if the new cars can handle variable voltage
and the old cars are fixed voltage then it could make sense to
upgrade the lines in advance of removing all the old cars.<br>
Then when all the old cars are gone upgrade the system voltage.<br>
<br>
<br>
Its not that you would need to put in heaver lines for higher
voltage but a close to 50% increase in voltage may make you replace
all the insulators that were rated for 600V with ones rates for
750V.<br>
<br>
I would expect the motors on the new cars would be based on AC
motors which is the predominant motor type in electric automobiles
but with something as big as a train the rules for motor choice may
be different.<br>
With AC motors the control electronics would have to handle the
voltage variations but its doable.<br>
<br>
<br>
<pre class="moz-signature" cols="72">--
Alvin Starr || voice: (905)513-7688
Netvel Inc. || Cell: (416)806-0133
<a class="moz-txt-link-abbreviated" href="mailto:alvin@netvel.net">alvin@netvel.net</a> ||
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