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700w Mercury Vapor Ballast

700w Mercury Vapor Ballast

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Old 700w mercury ballast from high mast lights used over the various freeway interchanges in Milwaukee, before being switched out to 1Kw HPS in the 80's. Given to me by a co-worker lineman who had this sitting in his basement for nearly 3 decades. Notice it has two capacitors, the oil/pcb type I imagine. No ballast label unfortunately. Considering Ill likely never find a 700w mercury lamp, nor have a 277v or 480v supply, this will just go in my collection

GE_SBMV1.jpg GE_SBMV2.jpg 700w_mercury.jpg LED_flood50.jpg

Light Information

Light Information

Manufacturer:unknown
Lamp
Lamp Type:Mercury
Base:mogul
Electrical
Wattage:700w
Voltage:277v or 480v
Physical/Production
Application/Use:High Mast outdoor fixtures

File information

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Filename:700w_mercury.jpg
Album name:BlueHalide / New album
Keywords:Gear
File Size:95 KB
Date added:Jul 17, 2015
Dimensions:960 x 540 pixels
Displayed:212 times
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streetlight98
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Mike McCann


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Jul 18, 2015 at 02:39 PM Author: streetlight98
Nice! The replacements are 1000W HPS? Significantly brighter but not energy saving by any means. Seems like 400W HPS would have been more appropriate (310W would be the lumen-equivalent but kinda dim for highmast IMO and the gear and lamps are expensive, plus why not have extra light in addition to saving money?). I guess the interchange was underlit?

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

wishus
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Jul 20, 2015 at 07:21 AM Author: wishus
I'm guessing they are using fewer lamps per mast than before?

Interested mainly in discharge lighting (mercury, sodium, neon) and also old and unusual incandescents.

BlueHalide
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Jul 20, 2015 at 09:51 PM Author: BlueHalide
I am not sure of the previous mercury installation this ballast came from as I was not alive yet (born in '90) however the technician that gave me this ballast said those high mast poles were only re-fixtured once since their installation, they now use six 1000w HPS fixtures per pole. He doesn't remember how many of the previous 700w mercury fixtures were used per pole
lights*plus
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George Liv Photo


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Jul 20, 2015 at 10:11 PM Author: lights*plus
When MV lighting began to be converted to HPS (mid 1980's), the mentality was "The more lumens the better!". It wasn't until both amateur & professional Astronomers started to voice their concerns as they had noticed a huge jump in light-pollution everywhere. The typical reason being of course conversions such as 700w-MV to 1kw-HPS. Little concern was shown (at first) if it was much higher light levels.
BlueHalide
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Jul 21, 2015 at 08:05 PM Author: BlueHalide
I can imagine the lumen jump was quite significant in this case, the city here likes to run lamps until they completely fail, and if they had the same mentality back then, those 700w merc fixtures were likely super dim.
Solanaceae
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All photos are brought to you by Bubby industries.


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Jan 28, 2016 at 07:07 AM Author: Solanaceae
There are 700w MV lamps on the bay here and here . I've heard that 277 volt things can be powered off 240 volt suppies with some obvious loss of power. Does this ballast have a neutral wire? I'm thinking this looks like advance, but pre crapacitor advance.

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streetlight98
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Mike McCann


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Jan 28, 2016 at 02:36 PM Author: streetlight98
The first one linked has an E40 base, so unless you have a European mogul base socket, Keif's second link would be your only bet. Also, if you have a 120/208/240/277V 1000W HID ballast, you can connect the 277V tap to this ballast (wire it up like you would if the 277V tap were the supply wire) and then connect the 1000W ballast to the 120V wired up like normal, minus the lamp.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

Bulb Freak
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Jan 28, 2016 at 02:47 PM Author: Bulb Freak
that Russian lamp is of European spec witch is vastly different to US 700W mercury lamps (a EU 700W lamp is 135V 5.4A a US 700W lamp is 265V 2.6A)

My other hobby is buses, especially the Routemaster

ace100w120v
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Oct 23, 2016 at 11:22 PM Author: ace100w120v
If nothing else, it's a neat conversation piece! As a lighting enthusiast, I can vouch for admittedly having stuff like this just laying around; in fact there's a clear Westy 175w Lifeguard and Sylvania /DX just randomly sitting on my desk, and other lighting stuff all over my dorm room.
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Miroxaphene
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Apr 13, 2020 at 03:18 PM Author: Memorex_Telex
700W ballast are identical to 1,000W ballast. The only difference is the capacitor values. Do you have a picture of the wiring diagram & what is the value of the capacitors?
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