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Westinghouse OV-15 in Sherman Oaks
This wealthy neighborhood is full of these, all operated by underground series circuits and remote isolation ballasts.
Keywords: American_Streetlights

Westinghouse OV-15 in Sherman Oaks

This wealthy neighborhood is full of these, all operated by underground series circuits and remote isolation ballasts.

geseriesm250a2.jpg unistyle400.jpg P4020002.JPG P4020004.JPG P4020005.JPG
File information
Filename:P4020002.JPG
Album name:Silverliner14B / los angeles dwp/bsl street lights
Keywords:American_Streetlights
Company and Date Manufactured:Westinghouse
Model Number:OV-15
Wattage:175w
Lamp Type:Mercury Vapor
Filesize:50 KiB
Date added:Jun 10, 2010
Dimensions:1025 x 768 pixels
Displayed:156 times
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=2166
Favorites:Add to Favorites

Comment 1 to 6 of 6
Page: 1

mercuryvaporrocks   [Jun 10, 2010 at 10:24 PM]
Reminds of the older streetlights we used to have in Pittsburgh, the transformers were so tiny that it was hard to believe they were actually capable of running 400 watt mercury vapor lamps.
Form109   [Jun 11, 2010 at 04:54 PM]
How does a Series Wired System Work?....is the Isolation Transformer there to provide lamp Voltage...and a Regulator Regulates a Steady Current for a Whole String?
Silverliner14B   [Jun 11, 2010 at 06:30 PM]
Form109, yes the regulator maintains a constant current and the isolation ballasts provide the correct voltage/current required by the lamps.
DimBulb   [Jun 11, 2010 at 10:32 PM]
What happens to the other lights if one of the ballasts or lamps fail?
Form109   [Jun 11, 2010 at 11:45 PM]
if a Lamp Burns out won't the Regulator Compensate for that?....i think if a Ballast Burns out there will be an Open Circuit in the String...and the Rest of the Lights wont illuminate.
Silverliner14B   [Jun 12, 2010 at 04:37 AM]
If a lamp goes out it's bypassed by the isolation ballast, so it won't affect the string. However I've seen cases of burnt up isolation ballasts disabling whole strings.

Comment 1 to 6 of 6
Page: 1