Re: LED's on Long disance lines

["MattyQ" <mattyq1009@dingoblue.net.au>]

HXP1 <hxp1@dingoblue.gunzel.net.au> wrote in message
news:398fc70c$0$774$7f31c96c@news01.syd.optusnet.com.au...
> Jonathan Lau <jonlau@ozemail.com.au> wrote in message
> > What is the life span of LED's?
>
> Quite a while.  Allegedly.

QR Signal Electricians have had experimental LED level crossing lights
flashing outside their workshop at Mayne for just on 2 years now. That's
right, 2 years continuous without being switched off (and they are still on
to this day). In that time, a total of 9 LED's have failed. There are four
lenses, three are LED the other is a globe. That works out to 3 LED's blown
per lens in 2 years. Considering there would be about 3 or 4 hundred LED's
per lens, that's a pretty good failure rate. Funny thing is, because they
are level crossing signals, they have to be signed off by both QR and QT. I
believe QR have signed off but still waiting for QT to make a decision.
TYPICAL!!!


--
Matt Smith
Brisbane Australia.

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