Short Time Running Of Fluorescents

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Paul
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Short Time Running Of Fluorescents

Postby Paul » Tue Aug 22, 2017 12:38 am

Is there any detriment to the lamp if it is run for a relatively short period, say 20-30 mins at a time? If a lamp hasn't been fired up in a while, should it be considerably longer, a bit like some discharge lamps?

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Re: Short Time Running Of Fluorescents

Postby Slyspark » Fri Aug 25, 2017 10:53 pm

Have to admit, I've wondered the same. I'm sure it won't do them too much harm (unlike old SOX / SLI lamps) but repeated switching versus occasional switching with long burning hours will slightly reduce the life of the tube. I can't see why never running it for more then 20-30 mins would be a problem tho.
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Re: Short Time Running Of Fluorescents

Postby LinearSLI-H » Sun Aug 27, 2017 7:33 am

GE say that discharge lamps need at least a 10 hour run on each switch on, less than 10 hours reduces life by 25% for each burning cycle.
Having said that, I don`t think it will harm fluorescents with just a half an hour run per start, and with the use of electronic starters to `soft start` any tube, I reckon you will still get a good life from them.
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Re: Short Time Running Of Fluorescents

Postby MFL » Tue Apr 24, 2018 4:57 pm

Fluorescent lamp life decreases with switching cycles. The standard 3h switching cycles are 2h45 on, 15 min. off to achieve the expected life of 10000h to 15000h. According to Sylvania technical data, lamp life is reduce to 50% with 3 time more switching cycles per day (30 vs 10 switching cycles/day). I found on a belgian website that fluorescent lamp life is only 4000h to 6000h with 6 minutes switching cycles versus 12000h to 15000h with 3h switching cycles.
The storage time doesn't affect lamp life as far as I know

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Re: Short Time Running Of Fluorescents

Postby WHERESTHECUEBALLGOIN » Sun Apr 29, 2018 10:18 pm

removed
Last edited by WHERESTHECUEBALLGOIN on Mon May 28, 2018 11:39 am, edited 1 time in total.

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Re: Short Time Running Of Fluorescents

Postby LinearSLI-H » Mon Apr 30, 2018 7:28 pm

The ten hours thing is noted in the GE lamp guide for Lucalox lamps only, took me a while to find it again!
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Re: Short Time Running Of Fluorescents

Postby WHERESTHECUEBALLGOIN » Tue May 01, 2018 12:10 am

removed
Last edited by WHERESTHECUEBALLGOIN on Mon May 28, 2018 11:39 am, edited 1 time in total.

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Re: Short Time Running Of Fluorescents

Postby MFL » Wed May 02, 2018 2:09 pm

Ten hours is not unrealistic expectations for fluorescents in professionnal use : I work in a library and lights are on from 6 or 7 am to 6 pm in most rooms so nearly 12 hours cycles ! In private use, you're right, it's not common

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Re: Short Time Running Of Fluorescents

Postby MissRiaElaine » Wed May 02, 2018 3:53 pm

The lights in my office before I left were on all day, it was a very dark location with virtually no daylight.
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