Re: 1000 watt MV lamp on 1500 watt ballast? « Reply #1 on: June 30, 2022, 01:17:58 AM » Author: Medved
They are by far not just "overdriven 1kW". The arctube of the 1.5kW may be the same size, but the fill composition and dosing and electrodes are adopted to support the higher currents and higher temperatures. Plus the outer fill will be adopted as well, to deal with the higher arctube heat dissipation. So when you drive them using 1kW ballast, it will run on lower temperature than designed, so the color will be shifted and the efficacy will be lower. But I strongly doubt it would cause any harm, the 1kW is not that far from the designed 1.5kW.
		Logged

No more selfballasted c***

	Re: 1000 watt MV lamp on 1500 watt ballast? « Reply #3 on: June 30, 2022, 07:05:35 PM » Author: wide-lite 1000
GE also . No idea which ballast was used though .
		Logged

Collector,Hoarder,Pack-rat! Clear mercury Rules!!

	Re: 1000 watt MV lamp on 1500 watt ballast? « Reply #4 on: July 01, 2022, 03:46:41 AM » Author: 108CAM
I'd just do it once or twice for testing and no hot restrikes
		Logged

Fluro starter pings combined with a 50hz ballast hum and blinking tubes is music to my ears.

Rest in Peace Electronic Lamp Manufacturers of Australia
1925-2002

Bring back the AJF Zodiacs!

Total incidents since joining LG: 17
Lamps accidently broken or smashed: 14
Ballast explosions/burnouts: 3

	Re: 1000 watt MV lamp on 1500 watt ballast? « Reply #5 on: July 01, 2022, 04:15:54 AM » Author: Silverliner
Quote from: joseph_125 on June 30, 2022, 02:12:42 AM Sylvania used to mention running H36 lamps on 1500w in their older MV literature see here. You get 850000 lumens operating a 1000w H36 MV lamp at 1500w but lamp life drops to a mere 2000 hours. You meant to type 85,000 lumens?
		Logged

Administrator of Lighting-Gallery.net. Need help? PM me.

Member of L-G since 2005.

Collector of vintage bulbs, street lights and fluorescent fixtures.

Electrician.

Also a fan of cars, travelling, working out, food, hanging out.

Power company: Southern California Edison.

	Re: 1000 watt MV lamp on 1500 watt ballast? « Reply #6 on: July 01, 2022, 04:17:20 AM » Author: Silverliner
I’d try that with a cheap Chinese 1000w merc first before trying any of the now precious USA ones.
		Logged

Administrator of Lighting-Gallery.net. Need help? PM me.

Member of L-G since 2005.

Collector of vintage bulbs, street lights and fluorescent fixtures.

Electrician.

Also a fan of cars, travelling, working out, food, hanging out.

Power company: Southern California Edison.