Braune, H., Erckmann, V., Hollmann, F., Kasparek, W., Laqua, H. P., Lechte, C., Marsen, S., Noke, F., Purps, F., Reintrog, A., Schlüter, K.-H., Schneider, N., Schulz, T., Stange, T., Uhren, P., W7-X ECRH Team, Max Planck Institute for Plasma Physics, Max Planck Society, W7-X ECRH Team at IGVP, & W7-X ECRH Team at KIT (2015). Reliable and safe simultaneous operation of the W7-X gyrotrons. Talk presented at 27th Joint Russian-German Workshop on ECRH and Gyrotrons. Greifswald. 2015-06-29 - 2015-07-04.