MH on Son ballast

Topics relating to lighting control gear, including magnetic & high frequency ballast and ancilliary devices such as starters, ignitors and switchgear.
frutas
Posts: 103
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Area of interest: Street lighting
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MH on Son ballast

Postby frutas » Sat Sep 24, 2011 1:03 am

I have an old Thorn 150W SON ballast, and the other day I ran it for a few hours powering an Osram powerball lamp that they state is designed to run on SON gear. I noticed though that the ballast gets quite a bit hotter running this than a SON lamp!

Anyone else noticed this?

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LinearSLI-H
Posts: 999
Joined: Wed Jun 29, 2011 10:20 am
Favourite Manufacturer: PHILIPS and VOSSLOH SCHWABE
Area of interest: HID and Associated control gear
Oldest item: Philips 160W MBT/U 1951
Location: Cheshire

Re: MH on Son ballast

Postby LinearSLI-H » Sat Sep 24, 2011 12:48 pm

Yes, being a smaller arc the Halide will draw a slightly different voltage and current, than the SON.
FEED THE MOOMIN!!

frutas
Posts: 103
Joined: Thu Jun 30, 2011 12:08 am
Favourite Manufacturer: gec and philips
Area of interest: Street lighting
Oldest item: Siemens Sieray MB/V
Location: Walsall, West Midlands
Contact:

Re: MH on Son ballast

Postby frutas » Sun Sep 25, 2011 12:04 am

That makes sense then - I'm imagining an increase in current and decrease in voltage. I just can't believe the difference!


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