Lighting_tech Posted July 29, 2013 Share Posted July 29, 2013 If you were to wire an HMI Flood with reveresed live and neutral what would the out come be? If you have some tha t just dont turn off through the board is it simply a programming error? Many thanks Link to comment Share on other sites More sharing options...
Brian Posted July 29, 2013 Share Posted July 29, 2013 If you were to wire an HMI Flood with reveresed live and neutral what would the out come be?They would work normally. Think about it - they are fed from AC which swaps Live and Neutral 100 times a second anyways. If you have some tha t just dont turn off through the board is it simply a programming error? Maybe, or a bust dimmer, or they've been fed from hard power, or.... Link to comment Share on other sites More sharing options...
emsgeorge Posted July 29, 2013 Share Posted July 29, 2013 ballast supplied - so perhaps have fried the triac with the startup current, especially if someone has put them on a dimmer channel and faded them up. An expensive learning curve me thinks...... Link to comment Share on other sites More sharing options...
Roderick Posted July 29, 2013 Share Posted July 29, 2013 Please tell me you weren't trying to run an HMI through a dimmer with the thought to fade them in & out? Link to comment Share on other sites More sharing options...
adam2 Posted July 30, 2013 Share Posted July 30, 2013 Any common discharge lamp will work fine with live and neutral reveresed, as will virtualy any AC appliance.Remember that in many parts of Europe the standard mains plugs can be inserted into the outlet either way round, and no one worries about that.In a few places the 230 volt mains supply has BOTH poles live, without a neutral, and again discharge lamps and other appliances work fine. No common type of discharge lamp can be worked from a dimmer.If you have tried this, it has probably broken the dimmer which as a result may be permanently on, or permanently off.It might have damaged the discharge lamp fixture, but they are robust and it is probably fine. Link to comment Share on other sites More sharing options...
bigclive Posted July 31, 2013 Share Posted July 31, 2013 The inrush current to the power factor capacitor in HMI fixtures is enough to weld contactor contacts closed, so I guess it's enough to blow a triac. I've never actually tried connecting a metal halide fixture to a dimmer to try it out though. Even in switching mode. Link to comment Share on other sites More sharing options...
Lighting_tech Posted August 3, 2013 Author Share Posted August 3, 2013 How about the same with MBI floods?! Link to comment Share on other sites More sharing options...
Dmills Posted August 3, 2013 Share Posted August 3, 2013 In this matter a discharge lamp is a discharge lamp, none of them dim that way and if the balast is magnetic the currents into the PFC caps can and will break things. Fix the dimmer, get a mechanical dimming shutter and put the lantern on hard power. Regards, Dan. Link to comment Share on other sites More sharing options...
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