| 摘要 |
<p>A circuit for an electrically heated continuous-flow heater having channels which are connected hydraulically in series and are heated by electrical resistors through which water flows, in the case of which circuit the resistors are connected in series and, during operation, are connected directly or via switches to external conductors of the supplying three-phase electrical power system, and the resistors form load steps, in the case of which circuit the series circuit formed by the resistors (RF1, RF2, RG1, RG2, RK1...) is constructed such that the physically adjacent ends of the resistors are connected to junction points (15, 12) and such that these junction points, to the extent that they delineate a load step, are connected directly to the external conductors (L1, L2, L3) of the three-phase electrical power system. <IMAGE></p> |
