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Westinghouse 400w Corstar lamp look at those huge electrodes

Westinghouse 400w Corstar lamp look at those huge electrodes

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It's awesome to see these huge electrodes in a HPS arc tube, normally it's hard to see the details of them due to the normally translucent PCA arc tube.

image~126.jpeg image~735.jpg image~731.jpg image~662.jpg

Light Information

Light Information

Manufacturer:Westinghouse
Model Reference:C400S51
Lamp
Lamp Type:HPS
Base:MOG
Shape/Finish:E-18
Service Life:20,000 hrs
Electrical
Wattage:400W
Voltage:100V
Optical
Lumen Output:50,000
Color Temperature:2100K
Color Rendering Index:22
Physical/Production
Factory Location:Bath, NY USA
Fabrication Date:February 1977

File information

File information

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Filename:image~731.jpg
Album name:silverliner / high pressure sodium
Keywords:Lamps
File Size:392 KB
Date added:Sep 17, 2015
Dimensions:2465 x 1848 pixels
Displayed:164 times
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-111865
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Solanaceae
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Sep 17, 2015 at 08:05 PM Author: Solanaceae
Good old westy quality. Reminds me of the electrodes on my ITT 250w lamps.

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funkybulb
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Sep 17, 2015 at 09:36 PM Author: funkybulb
Wow very nice I have 150 watt corstar lamp
That will fire up on pulse start MH

I supose those early HPS gave off more lumens then the PCA ones .

No LED gadgets, spins too slowly.  Gotta  love preheat and MV. let the lights keep my meter spinning.

Silverliner
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GoL
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Sep 17, 2015 at 10:29 PM Author: Silverliner
Just 3-5% more lumens. And the washing of PCA arc tubes boosted the light output by almost that much, and cheaper to make. So there went sapphire.

May all the great lighting technologies have their place in history.

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dor123
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Sep 17, 2015 at 10:42 PM Author: dor123
The sapphire had several problems like high price and different coefficients of thermal expansion parallel and perpendicular to the tube axis according to James Hooker's website .
I didn't know that HPS lamps have so large electrodes. Probably because the arctube is thinner than that of MV lamps, the electrodes looks larger.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

ace100w120v
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Sep 18, 2015 at 07:05 AM Author: ace100w120v
I bet this would be fun to watch during a hot restrike cooldown!
ricksbulbs
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Sep 18, 2015 at 07:47 PM Author: ricksbulbs
Dave---WAY COOL! I have just a couple of GE sapphire arc tube 400 watt Lucaloxes that were GE R & D center evaluation lamps! They are still brand new as far as I know and I heard super rare! I also have a rare GE Lucalox 400 with a mogul 3 contact base like a big 3 way lamp, and the earliest type of ballast and ignitor, which uses that ring contact to function, as well, another GE R & D center evaluation lamp, but this one is PCA. The 3 contact lamps are ultra rare I hear! Way cool lamp! Rick "C-6" Delair!
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Sep 18, 2015 at 08:40 PM Author: don93s
Awesome! They look like Lifeguard electrodes!
ace100w120v
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Sep 18, 2015 at 08:54 PM Author: ace100w120v
Was there ever such a thing as a 'Lifeguard' HPS lamp? I've never seen or heard of one. What about MH? (probe start of course back then)
Silverliner
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GoL
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Sep 18, 2015 at 09:04 PM Author: Silverliner
No, neither one were made in a long lasting "Lifeguard" version, but HPS made in the 1980s were known to last 20 years. MH back then was even worse than todays stuff.

May all the great lighting technologies have their place in history.

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ace100w120v
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Sep 18, 2015 at 09:09 PM Author: ace100w120v
Yeah, I've heard of 70s-80s HPS lamps finally failing in the 2000s-2010s, 30-40 years later! Unlike modern Chinese generic lamps that sometimes die after like 6 months!
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Sep 27, 2015 at 10:01 AM Author: chrislights
Nice find! and cool to see thru arc tube!

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