I have this projector lamp I got a while back and am wondering what kind of lamp it is and how to power it up. (I think it is some kind of metal halide lamp.)

Anyone have any idea about its wattage?

These were the details written on the lamp:

Back of the reflector:
CLMPF0019DE01
950118    161

521010711

Arc tube:
19

5A
05

If anyone knows about this lamp, please share 

This is a headlight bulb I think. I tried reverse image search but I didn't find anything else.

Looks like one of a myriad of custom MH lamps made at some time for projector application. May be AC or DC. Without knowing of exact projector model, there is zero chance of finding a compatible ballast. While later UHP mercury projector lamps look standardized *somewhat* these earlier ones were purely custom made.

 

Plus beside the ballast, you will need to provide specified forced cooling - the specifications for cooling use to be rather strict (the airflow, the exact direction,...) and unless is some kind of standard lamp, very proprietary. So beside the ballast itself, you very likely would need practically the whole projector itself, at least its light engine assembly with all the air ducting and fan.

In fact, @Robotjulep did not do his homework. Just a 5 min of googling using lamp part name reveals a projector name where it belongs. One very old and crappy by today Sharp projector.

service manual here, even ballast schematics is published, which is rare.

https://elektrotanya.com/sharp_xv-3300s.pdf/download.html#dl

The lamp is 250W AC metal halide.
another partname for this lamp is BQC-XG3850E/1

I'd try to light is up using my 250W electronic ballast somewhere outdoors, so no sniffing mercury vapor if it explodes, haha))

Though, based on the lamp of quite similar look I have laying around for many years, but likely DC one, which is rated 40V 260W, I suspect short arc MH projector lamps typically run at lower than usual 100-130V arc voltage of general metal halides. So, when hooked on a conventional 250W ballast it won't explode, but just will not run-up fully...

Wow, looking at the schematics more carefully it reveals a current shunt resistor in the power path of 0.03 ohms and a voltage measured at feedback pins of related controller IC is stated as 0.1V. So we shoud expect arc current of ~3.3A approximately. And yep, arc voltage of some ~70-80V based on the schematics. Looks all reasonable.

@RRK and @Medved : Thanks for the replies and information!

I wonder if a 150w 55v HPS ballast can power this? Also, is it safe to operate this lamp without an enclosure or will the UV exposure be dangerous? The arc tube looks frosted by the way.

It looks to me like one of the earliest LCD projector lamps made by either Matsushita or Iwasaki.  I ran a similar looking one on 150W HPS ballast but think that was indeed rated about 150W because the colour was rather good.

The arc tubes of these often look frosted.  They are typically dosed with a lot of lithium to boost the red ratio, but that is very aggressive to quartz and quickly corrodes it.

I suspect American S55 ballast may have not enough OCV to start this lamp. James probably means European spec 150W ballast which is ~100V 1.8A 230V OCV. That equals to American S56.

My idea for specs recovered from ballast schematics and projector manual (250W ~3.3A ~75V sqarewave) this lamp will run a bit underpowered on Euro spec ballast. From American spec ballasts I'd try 250W M58 (130V 2.1A) or S50 (100V 3A). Do not run M58 for long as it may heat up a bit with such low lamp voltage.

If run with semi-parallel ignitor on HPS ballast there may be not enough ignition voltage, so the lamp will not strike at all.

Yes there be some shortwave UV. Not much, mostly radiated while the lamp is cold, but yes, avoid exposure.
Also, remember you are running this lamp on an unintended ballast. It may behave badly and explode. Do this outdoor to allow mercury vapor to dissipate peacefully and definitely do not stay at the line of fire. A small computer fan blowing nearby may be beneficial as Medved noted.

Normally there is no risk of mercury poisoning from exploded short arc lamps.  The metal is so hot that it instantly oxidises, and studies on the safety of blown up lamps have shown that the risks from that compound are insignificantly low.  Low pressure mercury lamps that fail are considerably more dangerous because then the metal remains in its native state, and inhaled vapours from that are believed to be considerably more toxic.

I powered it up on a 150w PSMH ballast for 40 seconds but I quickly shut it off when I noticed a burning smell. This lamp was brand new when I got it so perhaps it's just the manufacturing chemicals burning off?

Also, should the cooling fan be positioned like this?

Sure the smell is some organics like 20 years worth of dust burning off.

No one can tell you about the cooling now until you have an access to the actual projector to look. In the original design the fan probably blows from the side. Cooling too aggressively will not harm, but will prevent the lamp from running-up completely, obviously.

I ran it up to full brightness and measured the voltage and current: 83v, 1.73a