Posted 09 May 2005 - 04:33 PM
Thanks for the help.
Posted 09 May 2005 - 06:12 PM
Hope I have been helpful.
Posted 09 May 2005 - 09:31 PM
long cable runs may have an adverse affect on HMI's. long runs equals more resistance. If you strike on HMI and another goes out, it is a sure sign of a voltage drop. Crank the voltage up on the genny or bring it closer. And I hope the electrics ran 4 ought first if it was a long run. Some electrics run a double pump run for longs runs or at least a double neutral for the weird harmonic effects of many electronic ballasts.
just my 2 cents.
Posted 11 May 2005 - 09:27 PM
I spoke to a friend who works with generators and thinks the unregulated black leg is a myth. Though it is true that the black leg of a generator seems to cause trouble for some HMI's it is for a different reason. He thinks it is more the effect of the electric supply for the brains of the generator. The brains control the electric output of the generator but also controls the same electric that feeds itself. Then throw in the weird harmonic effects of a few square wave ballasts and sooner of later one doesn't fire. The resolution is still the same: Switch phases.
Posted 23 May 2005 - 01:24 AM
Hey I'm getting ready to lease some equipment and I've heard a few conflicting remarks about the two types of ballasts for Arrisuns. I've heard the electronic ballasts, although much lighter, are more 'finicky' about power source. Then I heard that magnetic ones might not be flicker free, which I don't believe. On the same note, what about other brands, are there any others that definetly are or are not flicker free...ala Ebay HMI's like SunRays?
Thanks for the help.
A magnetic ballast is not a flicker free ballast, an electronic ballast is a flicker free ballast, Arrisun or not.
Regarding "finicky", an electronic ballast is more sensitive but just as reliable as long as you take the time, before you start using it, to check the power source, head feeder, head & globe.
Remember: "A magnetic ballast is a tank but an electronic ballast is a BMW." -GN-
I hope this helps.