Circuitor in Spain, (up to 600V), and ABB Control in Oy,Finland, do some in that range. An internet search will throw up many more - my colleague did one just last week.
To DPC: Three different types of electronic ballasts from two different manufacturers have been uesd, each typeexperienced regular failures over the last two years. In addition the high frequency tubes have been failing and "pinking" at one or both ends (100 tube failures per week @...
I am looking for a solution to third-harmonic induced problems. The industrial facility in question is fed with a three-phase 400V arrangement, with no neutral, from a 10 kV/400V delta-star transformer (with an earth taken from the star-point secondary).This distribution configuration feeds...
