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EELZ DNaT 400-4 Armenian High Pressure Sodium Lamp

EELZ DNaT 400-4 Armenian High Pressure Sodium Lamp

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Hope this ain't "Pearls before Swine".

The Armenian high pressure sodium lamp was made in 1984 when Armenia was part of the Soviet Union at the State Lamp Plant in Yerevan, the capital of Armania. (Or the Armenian S.S.R. as it was known then.) Later, (2000) after the fall of the Soviet Union this plant became known as the "Grand Sun Electric Lamp Works" and it closed in 2010.

During Soviet times this plant was very productive and their lamps are quite common within the former Soviet Union countries.

The etch identifies the plant simply with one Armenian character, a symbol like a lower case Roman "t" which is the 5th letter of the Armenian alphabet and pronounced "Yere", and is the first letter in the name of Armenia;s capital city, Yerevan when written in Armenian script.

The remainder of the etch is in Cyrillic and is the type of lamp.."DNa-T", which I assume is, "Discharge. Sodium, Tubular". The Arabic digits that follow are the power rating and the "model" It was common in the former Soviet Union to design a lamp, say a 250w metal halide...the first production model was suffixed "1". When a design change was made, this suffix was simply advanced one digit. "2" might well be a quite different lamp (albeit the same chemistry and power rating) for a different purpose and would be supplied alongside "1".

This example is the 4th "iteration" of a 400w High Pressure Sodium made at the Yerevan Plant.

The overall appearance, bulb shape and arc tube seal design looks to be very much a clone of G.E.'s early Lucalox designs. The little glass separator/imsulator at the lower end of the arc tube is quite unusual.

The polycrystalline alumina from which the arc tube is comprised is of a poorer quality and translucency than that found in most "Western" High Pressure Sodiums but is of markedly better quality that the PCA used in Hogh Pressure Sodium lamps made in the Poltava Electric Lamp Plant in Poltava Ukraine/Ukranian S.S.R., another Soviet plant contemporary to the Yerevan Electric Lamp Plant where this is from. Poltava PCA has a much more light grey powdery look.

These days (second decade of the 21st century) most of these plants have either closed or been taken over by "western" influences and extraordinarily unique lamps such as this are now becoming increasingly hard to find.

Admittedly, at the time this was made tiny Armenia had the full support of the Soviet Union behind it which made these things possible. To place in a more intuitive context, a few things...

Australia never made ANY H.I.D. which included High Pressure Sodium.

The location of the Plant where this was made is just 20Km north of the border with Turkey and 40Km north of the fabled volcano, Mt Ararat, where Noah's Ark supposedly made landfall. Mt Ararat is clearly visible from the lamp plant on the southern horizon as a snow covered cone.

Cadmium20r.jpg 19-120Comp.jpg 19-101 Comp.jpg 15-384A Comp.jpg

Light Information

Light Information

Manufacturer:"Brand" EELZ "Yere", Plant,Yerevan Electric Lamp Plant, Company, Yerevan State Electric Lamp Works
Model Reference:DNaT 400-4 (The suffix "4" is the fourth type of 400w HPS they made.)
Lamp
Lamp Type:High Pressure Sodium
Filament/Radiator Type:High Pressure Sodium-Mercury Plasma
Base:E40-45A
Shape/Finish:ED-57 (Metric, in mm), Clear
Electrical
Wattage:400
Voltage:c120v Arc Drop
Current:c4A
Optical
Color Temperature:2100
Color Rendering Index:22
Physical/Production
Dimensions:57mm dia. 238mm tall
Factory Location:Arabkir, Yerevan, Armenia 40* 13' 01.4"N, 44* 31' 37.3'E
Fabrication Date:February 1984
Application/Use:Street Lighting

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fluorescent lover 40
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Sep 23, 2019 at 09:23 PM Author: fluorescent lover 40
Very cool lamp!

Good quality things are awesome. Cheaply made things are not.

Collector of lights and anything else that interests me as long as I have space for that particular thing!

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Sep 24, 2019 at 01:05 AM Author: monkeyface
Very nice history behind this lamp Andrew!
I’m as well surprised to know that Armenia did make HID lamps in the past.
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Sep 24, 2019 at 01:24 AM Author: Globe Collector
Thanks guys! Michael, when you look at Armenia on Google Maps, it is tiny, particularly when compared to the vastness of Anatolia in Turkey to its west, it's 29,743 square kilometeres is only roughly only two-thirds that of Switzerland's 41,285 square kilometeres...and compared to California at 423,970 Km Squared it is only about 1/14th of that area. Here, Tasmania is 68,401, a lot smaller than California but twice the area of Armenia and about one third greater than Switzerland.

It was the "power" of the Soviet Union behind Armenia when it was the Armenian S.S.R. that really made this possible, however the plant went on for another 20 years after Armenia left the Union in about 1990.

The plant is visible at a distance on Google Street view, still there but looks derelict.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

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Sep 24, 2019 at 02:04 AM Author: monkeyface
I know almost nothing about Armenia historically because its so far east of us and small.

Looking at Switzerland, this country also did not have any pure national HID lamp production but it had one which was in partnership of another country. It’s unbelievably hard to get any historical datas about such companies since they disappeared long time ago.
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Sep 24, 2019 at 05:12 AM Author: Globe Collector
Are you talking about Meda?

I have one Swiss Meda H.I.D., (An arsenate phosphored mercury lamp). I know someoene in Basel and they went down to the archives and found a whole lot of papers pertaining to Meda (Licht AG).

The plant was at Fasanenstrasse 122 Basel and ran under the name Meda Licht AG from the 13th of March 1952 to sometime in 1972.
Before that it was known as Bumix AG (The "Bu" part was part of the founding guy's surname and the "mix" was the fact that made self ballasted mercury lamps) ...they operated from the 15th of March 1944 until the 12th of March 1952, also at Frsanenstrasse 122.

There seems to be apartments on this site now, but there is a bare block behind the apartments that may have once been part of the land upon which the plant stood.

If you go to Google maps and follow along the border between Armenia and Turkey...you will find only one or two roads crossing it. There are also some Armenian ruined churches on the Turkish side but within eyeshot of the present day Armenia. When I looked into the history between these two countries...it ain't too good and the animosity is still visible on the map today.

Armenia has a very old form of Christianity...much older than Roman Catholicism. The architecture is very unique and semi-circular arches feature strongly in both the ancient churches and modern Armenian architecture.

Armenian people also pop up in all sorts of places...some notable ones....all females..

Gladys Berejiklian current Premier of New South Wales.
Tabetha Boyajian Astronomer.
Kim Kardashian Hollywood Socialite.

As one can see, the recent history (last 120 years) of Armenia has scattered its people all over the place.


Oh, putting things in perspective...Basel to Yerevan is 4,130Km......
Hobart to Darwin is 4,453Km!

Oddly enough though Armenian lamps are somewhat easier to procure than Turkish ones!

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

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