In the Pro AV install world, everyone relies on essentially two products for general power robustness. The first is Surgex's surge protection:
http://www.surgex.com/products.htmlAnd the second is the aforementioned Furman multi-tap voltage conditioner.
DSPs are place on a UPS.
Service calls are margin killers for install companies, and the need for truly effective surge protection has made Surgex the leader in that space. Their new remote managed power sequencers will help them keep that lead.
There are much higher end pieces, of course, with full rectification and re-conversion to new voltages/line frequencies, but that is generally too expensive for the general AV world, and unnecessary.
tom eaton wrote on Thu, 04 November 2010 08:34 |
Bringing this thread back from the dead to ask if any of you folks have made changes or have new power issues/solutions.
I'm dealing with a machine in another part of my building which causes enough of a voltage drop when it cycles that my Monster Power boxes, which have 10 amps of load on them as a matter or course, go way over on power consumption and trip.
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The process you are describing seems highly unlikely behavior for the average thermal breaker at only 10amps load. Are the Monster units in question GFCI? If so, it is more likely that there is a spike (or dip) on the neutral/live combo from the other equipment that is triggering the GCFI. Also, if his device is contributing certain harmonics ("triplen") to the neutral current, for instance, this could trip the GFCI.
To have a real double current draw, the line voltage would have to sag to the point that most gear would shut off. If the gear stays operational, then the problem is most likely elsewhere, and my armchair quarterback take is that his equipment is polluting your neutral.
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Thanks for whatever help people can offer!
tom
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You need a good clamp meter, and you need to look at the neutral and ground current behavior both on his feed and yours. You also need to make sure there isn't an incorrect neutral/ground bond point in one of the subpanels after the main feed. Neutral and ground are to share only one bond point, at that is only at the main panel.
Without the current behavior in each of the conductors on each of the feeds, it is very difficult to say with certainty what is going on.