Film-Tech Forum ARCHIVE: STRONG 80 W ITH SWITCHER

my profile | my password | search | faq & rules | forum home

»	Film-Tech Forum ARCHIVE » Operations » Film Handlers' Forum » STRONG 80 W ITH SWITCHER

Author

Topic: STRONG 80 W ITH SWITCHER

Rick Long
Jedi Master Film Handler

Posts: 759
From: Toronto, Ontario, Canada
Registered: Nov 1999

posted 08-31-1999 11:45 PM

Maybe somebody can answer this one. Got a Strong Ultra 80 (4K bulb) hooked up to a Strong 7K switching rectifier. A wiring harness is provided to connect the two. Other than D.C. and ground, four wires are used. As with a traditional Strong hook-up, the orange and brown feed 110-volts from an internal transformer (in the rectifier) to the lamp. Provided certain conditions in the lamphouse are met, (fan running, door closed, and switches in ON and MANUAL) the 110-volts is fed back down the blue and yellow wires to pull in the rectifier contactor.
When hooked up color-to-color, the single-phase breaker on the rectifier kicks out immediately when the switch is put to the ON position. Eventually, we found that if the blue wire is disconnected, the system works fine. P.S. tried reversing the yellow and blue lines - still no-go. What gives, is the contactor internally conected to the transformer? P.P.S. The arc remains on for about half a second after the power switch is put in the OFF position. Any ideas?

| IP: Logged

Ken Layton
Phenomenal Film Handler

Posts: 1452
From: Olympia, Wash. USA
Registered: Sep 1999

posted 09-02-1999 11:29 PM

Are you hooking it up NUMBER-TO-NUMBER?

According to other Strong manuals, this is the color scheme:
Brown to #2
Orange to #4
Blue to #5
Yellow to #6
Pink (or Red) to #3

All of the above attach to the terminal strip located above the DC terminal block on the 62-84000 switching supply.

| IP: Logged

Jason Burroughs
Jedi Master Film Handler

Posts: 654
From: Allen, TX
Registered: Jun 99

posted 09-03-1999 01:08 AM

I worked with a strong lamphouse not sure of the model (at the AMC Prestonwood) but I THINK it was an 80 as well that did something similar...but it was hooked up to a Christie power supply...

| IP: Logged

Art Averett
Film Handler

Posts: 14
From: Orlando, FL
Registered: Mar 2000

posted 09-05-1999 11:09 AM

Though Strong doesn't tell you this but, the switcher power supply is also used with special venue or special effects projection.
Another switch is mounted next to the main power switch which takes place of the contactor which is not supplied in ths power supply. I'll try to get more info for you.

| IP: Logged

Rick Long
Jedi Master Film Handler

Posts: 759
From: Toronto, Ontario, Canada
Registered: Nov 1999

posted 09-08-1999 10:02 PM

Thanks for the replies, guys.
It appears that this was not an isolated incident. Another Super 80, another switcher (plug & play type) - same result. If you hook up the blue wire the single-phase circuit breaker kicks out. The adapter was supplied by Strong. Leave the blue wire off and it works fine (except for the arc staying on for three or four seconds after the lamp is switched off. The schematic shows the transformer to be totally isolated from any ground, but I think they lie.

| IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.