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Author Topic: can you change 220v 3Phase strong highlight 11 to single Phase? Peter Das Film Handler Posts: 50 From: India Registered: Feb 2008 posted 12-07-2011 11:46 AM                     I have a strong highlight 11 console fairly new with 220v 3Phase 60Hz, and I want to change to 220v (1)single phase 50-60hZ, Can you do this changing from inside tappings?or any other solutions to do this. Thank you in advance.  |  IP: Logged Markus Ito Film Handler Posts: 27 From: San Diego, CA, USA Registered: Apr 2011 posted 12-07-2011 01:25 PM                     It sounds like you want to run this console off of a 220 single phase line. I don't think it will be possible to reconfigure the existing power supply to use single phase. I have seen power supply transformers that allow you to move jumpers based on the voltage of your three phase (for example, 208), but converting to a single phase probably won't be possible with the current setup. You could try getting a phase converter which will convert the single phase into three phase, but these can be costly  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 12-07-2011 02:32 PM                       Is it one of the switching rectifiers? If so, I believe they will run on single or 3 phase.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 12-07-2011 02:58 PM                     If it is a switching rectifier, single phase connections for the incoming power would be on L-1 and L-3 in the terminal strip on the rectifier. You use all three (L1,L2,L3) for three phase connections. ..and this is for the hard wired versions for the rectifier. If you have an "MS" connection for the rectifier, you'd have to go into schematics on how to connect for single phase. Look in this warehouse page for the type of rectifier you have for that Highlight II to aid you along for the conversion.  |  IP: Logged Peter Das Film Handler Posts: 50 From: India Registered: Feb 2008 posted 12-07-2011 04:01 PM                     Here is the TYPE No :72006-02 SERIAL No :116409 MFR DATE 100604 Still I didnt buy this, if I can convert I am going to buy it. The present owner doesnt have any clue of this projector. I appreciate all your guys help. THANK YOU  |  IP: Logged Jim Cassedy Phenomenal Film Handler Posts: 1661 From: San Francisco, CA Registered: Dec 2006 posted 12-07-2011 04:52 PM                     I'm not sure about running a whole console, but I know of a couple of auditoriums here in San Francisco that are running their 3phase xenon rectifiers (Christie)off of a single phase supply by using a bank of large capacitors to generate a third "phantom" phase. This trick can be done, to some extent, with 3phase motors too, but becuase it lowers the efficiency and the torque, I've only seen it done with things like conveyor belt, blower or pump motors. The rectifiers seem to work OK and have been using this "trick" for over 10 years now. The only thing is that it causes them to emit a loud buzz at about 120hz that I find EXTREMELY annoying. So much so that I can't stand to be in that booth for more than a few minutes when the rectifiers are turned on or I get bad headaches. If you poke around the 'net' a bit, you'll find that there are several websites which give more details on how to calculate the type & size capacitors you'd need if you were going to attempt this. But again- I'm not sure it would be practical or even possible to run a whole console (rectifer, projector motor, automation, etc) from a 'bastard' 3ph source like this. Best thing would be a 'real' 3phase convertor, but these can be quite expensive when you get into the larger sizes.  |  IP: Logged Richard May Phenomenal Film Handler Posts: 1057 From: Floral Park, NY USA Registered: Aug 2004 posted 12-07-2011 06:15 PM                     Unless the Highlight II had a switcher put in after the original install, it probably has a 3 phase power supply. If that's the case, you can buy a switcher and wire it single phase like what was said here.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 12-07-2011 07:49 PM                     More if I remember .. if the switcher has the "MS" plug on it, you prob can open up the case and remove the "MS" plus so you can convert it to hardwire .. in which you can still attach both hots to L-1 and L-3 and ground to chassis for single phase operation. But, if it's a reactance (diode) rectifier, you're sorta confined to the 3 phase operation. EDIT: did a search on the model number and nothing comes up from STRONG with that model number. of "72006-02". Would this brand of rectifier be from another company? Best do a more thorough research on this, report back to us before a final decision is made on your end.  |  IP: Logged Richard May Phenomenal Film Handler Posts: 1057 From: Floral Park, NY USA Registered: Aug 2004 posted 12-07-2011 08:14 PM                     That is actually the console model number.  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 12-07-2011 09:25 PM                     Monte, you are getting your input and output connections a bit confused. The MS series switcher has the same twistlock AC mains input connector as the hardwire version does. It is a standard 30 amp 3 phase 4-wire style (I don't have the NEMA number handy at the moment) and as you mentioned, for single phase you simply use L1 and L3. As for the output, I would recommend that if one doesn't want the MS connector, that they order the hardwire output board rather than trying to tie into the MS connector's leads. Other than the gazilion cover screws one has to remove for the swap, it is pretty straightforward. EDIT: Monte already said this part, oops. Peter, you need to get the rectifier info from the owner, or have them take and send a picture of the rectifier to you to post here. Only then can we give you a positive answer.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 12-08-2011 12:57 AM                     quote: Tony Bandiera Jr getting your input and output connections a bit confused. "Oh shoot", you're right (I forgot about the four prong AC mains next to the MS connector..my bad) - "Dang!" been away from STRONG stuff for awhile being over to Christie and digital stuff this last couple of years.... ..at least I was close. - thx Monte  |  IP: Logged Ian Parfrey Phenomenal Film Handler Posts: 1049 From: Imbil Australia 26 deg 27' 42.66" S 152 deg 42' 23.40" E Registered: Feb 2009 posted 12-08-2011 01:26 AM                     quote: Monte L Fullmer ... four prong In the words of that wise person .... Hubba Hubba  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 12-08-2011 02:43 AM                      |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 12-08-2011 07:58 PM                        Abracadabra! Seriously, IF it is a switcher, it may actually be MORE efficient in single phase mode. I never trusted the Strong switchers (esp. since they are not normally field repairable) enough to have any personal knowledge. Brute force three phase rectifiers don't work well on single phase. Louis  |  IP: Logged Peter Das Film Handler Posts: 50 From: India Registered: Feb 2008 posted 12-09-2011 05:08 AM                     Here is a picture of the powersupply label.  |  IP: Logged

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