Abstract: The invention relates to a multiple glass pane (6) comprising two outer glass panes (4, 4?), at least one center glass pane (5), and a spacer (1), wherein the spacer (1) comprises a hollow space (2, 2?) for receiving a desiccant (3) and a receiving profile (7) for each center glass pane (5), and the hollow space (2, 2?) of the spacer (1) is filled with a desiccant (3).

Abstract: The invention relates to a multiple glass pane (6) comprising two outer glass panes (4, 4?), at least one center glass pane (5), and a spacer (1), wherein the spacer (1) comprises a hollow space (2, 2?) for receiving a desiccant (3) and a receiving profile (7) for each center glass pane (5), and the hollow space (2, 2?) of the spacer (1) is filled with a desiccant (3).

Abstract: During the run-up of high-power synchronous machines (6), such as those used in pumped storage plants, in gas turbines sets and so forth, unwanted alternating currents with slip frequencies between those of the phase swings and the nominal frequency (50 Hz) of the synchronous machine (6) can also occur in the disturbed condition in addition to low-frequency plant-specific phase swings. These alternating currents are induced in the field windings of the synchronous machine (6) as a consequence of an unwanted asynchronous starting and can lead to inadmissible heating of the synchronous machine and to overvoltages in the field circuit. Alternating voltages (U1) associated with the slip frequencies are detected from use of a sensing resistor (4) in the exciter current (i.sub.