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HomeBrewLamps
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M137 vs M57 « on: October 20, 2019, 12:37:19 PM » Author: HomeBrewLamps
Is there any possibility that I can run 175 watt probe start lamps on an M137 ballast without the ignitor?
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Lumex120
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Re: M137 vs M57 « Reply #1 on: October 20, 2019, 09:23:59 PM » Author: Lumex120
I have done it with my M250R2 since I don't have pulse start lamps and it seems to work fine. I have heard that they have lower OCV than probe start ballasts though and so the might not start reliably.
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HomeBrewLamps
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Re: M137 vs M57 « Reply #2 on: October 22, 2019, 12:44:32 AM » Author: HomeBrewLamps
It almost seems like the lamp is running dimmer than usual..
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Metal Halide Boy
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Re: M137 vs M57 « Reply #3 on: October 22, 2019, 07:47:09 AM » Author: Metal Halide Boy
It probably is. M57 lamps run at 285-320 volts, M137 lamps run at 240-290 volts.
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Re: M137 vs M57 « Reply #4 on: October 23, 2019, 08:38:43 PM » Author: HomeBrewLamps
Quote from: Metal Halide Boy on October 22, 2019, 07:47:09 AM
It probably is. M57 lamps run at 285-320 volts, M137 lamps run at 240-290 volts.

I didn't realize that! Thankyou for the info.


Time to ditch this M137 ballast.
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