Is this a breaking or no-break insulator (on Queen's Bridge)?
On Wednesday, January 9, 2019 at 9:37:33 PM UTC+11, Matthew Geier wrote:
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> On 9/1/19 9:25 pm, 'Richard Youl' via TramsDownUnder wrote:
> > As the length of the insulating material in the centre of the SI is
> greater than the length of the pantograph head to avoid bridging the two
> sections, it is necessary to cut power to avoid an arc which burns the
> insulating material and adjacent metal.
>
> I understand there are both breaking and no-break SIs and that no-break
> ones are becoming more common. With 10kw or more air-conditioning load
> even cutting off will still draw an arc.
>
> And with the interruption to power, the air con compressor stops and has
> to go through an unload - restart cycle that takes a minute or so.
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> > Regards,
> >
> > On 9 Jan 2019, at 7:48 pm, Ronald Besdansky shrdlu....@...
> <javascript:>> wrote:
> >
> > Are drivers still required to cut-off at section insulators and
> H-crossings?
> >
> > I remember Green Men noting down the numbers of trams drawing an arc as
> they crossed Swamston St in Collins St - not wanting to lose momentum for
> the climb beside the Town Hall?
> >
>