Does anyone own a US 425w H40 mercury vapor lamp? « on: November 22, 2020, 10:33:58 PM » Author: WorldwideHIDCollectorUSA
Are there any members that have the elusive American 425w H40-17 mercury vapor lamps? They are much rarer than the US 700w H35 mercury vapor lamp but they cannot operate properly on 400w H33 mercury vapor ballasts since these lamps have a 265v arc voltage and a lamp current of 1.7a and require dedicated 480v series chokes for their operation.
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.

	Re: Does anyone own a US 425w H40 mercury vapor lamp? « Reply #1 on: November 28, 2020, 06:15:27 PM » Author: Bulbman256
So that what H40 is for. Anyone know what H41 is? think H42 is 125w. If this standard was around in the 60s, be funny if they made /x lamps as that would be the rarest of the rare lamps.
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Collecting light bulbs since 2012, a madman since birth.

	Re: Does anyone own a US 425w H40 mercury vapor lamp? « Reply #2 on: November 28, 2020, 07:56:13 PM » Author: WorldwideHIDCollectorUSA
Quote from: Bulbman256 on November 28, 2020, 06:15:27 PM So that what H40 is for. Anyone know what H41 is? think H42 is 125w. If this standard was around in the 60s, be funny if they made /x lamps as that would be the rarest of the rare lamps. I am not aware of H41 mercury vapor lamps but H42 is the US ANSI spec for European 125w mercury vapor lamps. However, 125w H42 mercury vapor lamps and fixtures were mostly used in Canada and rarely used in the USA.
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.

	Re: Does anyone own a US 425w H40 mercury vapor lamp? « Reply #3 on: November 28, 2020, 08:02:58 PM » Author: HPS_250
I had never heard of 425w mercury vapor lamps until I saw them in a 1980s lamp catalogue, not sure from what manufacturer.
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I’ve always been interested in all kinds of lighting, mainly incandescent and HID, and especially all kinds of sodium lamps (HPS/LPS). I’ll tolerate LED but I’m not a fan of it.
I’m not proud to say that my city has Devolved to LED.

	Re: Does anyone own a US 425w H40 mercury vapor lamp? « Reply #4 on: November 28, 2020, 08:55:36 PM » Author: Bulbman256
I remember there was like a weird mercury vapor energy saver lamp fixture thing that used an hps ballast and i cannot remember what it was called.
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Collecting light bulbs since 2012, a madman since birth.

	Re: Does anyone own a US 425w H40 mercury vapor lamp? « Reply #6 on: November 28, 2020, 09:21:38 PM » Author: Bulbman256
Quote from: joseph_125 on November 28, 2020, 09:14:53 PM Might be the Philips Lo-Volt lamp. They were pretty much only used in Electicpak fixtures using a modified 55v HPS ballast. I think this was it, thanks!
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Collecting light bulbs since 2012, a madman since birth.

	Re: Does anyone own a US 425w H40 mercury vapor lamp? « Reply #7 on: November 28, 2020, 10:40:26 PM » Author: WorldwideHIDCollectorUSA
From my understanding these lamps only came in clear and with a /C phosphor.
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.

	Re: Does anyone own a US 425w H40 mercury vapor lamp? « Reply #9 on: December 10, 2020, 01:49:14 AM » Author: WorldwideHIDCollectorUSA
Quote from: James on December 09, 2020, 06:03:43 PM 425W lamps were also listed in the Sylvania 1959 and 1963 catalogues, in clear and /C types. I would love to see these catalogs since I do not see them on your page.
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.