Hmm, I wonder if they stripped the ballast out or just screwed a LED lamp into this fixture. If they wanted LED lighting outside, they should of went with that LED NEMA someone posted a while back.
Dave, this wouldn't have had a 20 year old MV lamp with lifeguard....this fixture looks too new for that....its a Regent/Cooper yard blaster...not an NEMA head...
Evluma makes some pretty interesting looking LED retrofit lamps designed for NEMA heads. You can use them with or without the original ballast. They are pretty expensive however.
@ Gil; looks just like an LED PAR shaped lamp used in recessed can and flood lighting.
BTW, is the following excerpt frm the site true about HPS lamps?
"Power factor is defined as the ratio of the real power flowing to the load to the apparent power. In an electric power system, a load with low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. A low power factor is not only inefficient, it can be expensive. It can reduce an electrical system’s distribution capacity by increasing current flow and cause voltage drops. Some utilities impose low power factor penalties.
The Clearlight has a high power factor of > .9, very close to unity. Typically, a HPS lamp has approximately a 0.5 power factor. What is worse, because HPS lamps have a warm up time they might start out with an even lower power factor of .25 and gradually increase to the .49 over a period of 15 to 20 minutes. This is significant because at a power factor of .25 the lamp is pulling over 4x the amount of power it should. For example, a 100 watt HPS would actually be pulling over 400W at first and slowly decrease as it warms up. This increases the demand on the grid. If you have a large number of HID lights coming on at the same time, say at dusk, there is a significant spike in energy consumption. LED lamps have no warm up time. Spikes are eliminated and the true and apparent power are almost equal."
@Dave, so they made this exact design in the 80s which still exist today? I know the McGraw Edison yard blaster was one of the 80s ones, but what about the one above? It looks just like the ones currently sold today...
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BTW, is the following excerpt frm the site true about HPS lamps?
"Power factor is defined as the ratio of the real power flowing to the load to the apparent power. In an electric power system, a load with low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. A low power factor is not only inefficient, it can be expensive. It can reduce an electrical system’s distribution capacity by increasing current flow and cause voltage drops. Some utilities impose low power factor penalties.
The Clearlight has a high power factor of > .9, very close to unity. Typically, a HPS lamp has approximately a 0.5 power factor. What is worse, because HPS lamps have a warm up time they might start out with an even lower power factor of .25 and gradually increase to the .49 over a period of 15 to 20 minutes. This is significant because at a power factor of .25 the lamp is pulling over 4x the amount of power it should. For example, a 100 watt HPS would actually be pulling over 400W at first and slowly decrease as it warms up. This increases the demand on the grid. If you have a large number of HID lights coming on at the same time, say at dusk, there is a significant spike in energy consumption. LED lamps have no warm up time. Spikes are eliminated and the true and apparent power are almost equal."