Author Topic: Hot-restriking cosmopolis lamps  (Read 1046 times)
Streetlightsandlamps
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Hot-restriking cosmopolis lamps « on: September 21, 2024, 01:12:15 PM » Author: Streetlightsandlamps
I would like to know if hot-restriking cosmopolis lamps can damage the lamp or the ballast, as before I knew that you couldn’t hot-restrike lamps like this, I did this a few times with my NOS Philips ARC 80. It still works, but I don’t know if it could’ve damaged the lamp or ballast a bit.
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dor123
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Re: Hot-restriking cosmopolis lamps « Reply #1 on: September 21, 2024, 11:52:16 PM » Author: dor123
Hot restrike don't damage anything.
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Re: Hot-restriking cosmopolis lamps « Reply #2 on: September 22, 2024, 02:52:45 AM » Author: Streetlightsandlamps
At least it doesn’t damage the lamp or ballast. :)
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sol
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Re: Hot-restriking cosmopolis lamps « Reply #3 on: September 22, 2024, 06:47:59 AM » Author: sol
Hot restrike does put additional wear on system components. However, in the normal course of use, it should be negligible. Hot restrikes in HID installations are an expected event and cannot be entirely prevented. As long as you don't force a hot restrike an excessive amount of times, you should be good. Most of the wear would be on the lamp and ignitor, though.

Personally, I don't purposefully make my HID hot restrike other than once when first acquiring a fixture just to test how long it takes. On the other hand, if the power dips or I mistakenly unplug the wrong cord, I don't sweat it. Neither happens often.
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Re: Hot-restriking cosmopolis lamps « Reply #4 on: September 22, 2024, 07:07:30 AM » Author: Streetlightsandlamps
I did hot-restrike that lamp a few times, and it is on a Harvard cosmopolis electronic ballast 42w.
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Re: Hot-restriking cosmopolis lamps « Reply #5 on: September 22, 2024, 07:57:02 AM » Author: dor123
How much time it takes to hot restrike?
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Re: Hot-restriking cosmopolis lamps « Reply #6 on: September 22, 2024, 10:17:17 AM » Author: Streetlightsandlamps
I didn’t wait for it to come on. I only saw some small arcs at one electrode.
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Re: Hot-restriking cosmopolis lamps « Reply #7 on: September 22, 2024, 10:25:18 AM » Author: dor123
My Osram HCI-TS 70W/830 takes 7 mins to hot restrike: https://www.lighting-gallery.net/gallery/displayimage.php?pos=-248716
The glow discharge of the ignitor, should appear a short time before the lamp hot restrikes?
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I only working with the international date format (dd.mm.yyyy).

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Re: Hot-restriking cosmopolis lamps « Reply #8 on: September 22, 2024, 03:09:24 PM » Author: Streetlightsandlamps
Your lamp was doing a similar thing to mine. Before it tried to restrike, it glowed at the ends a few times before it restriked.
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