| 摘要 |
The invention relates to a pre-charging switch arrangement (1) for charging a capacitor (C) of a direct-current circuit(7), having a pre-charging resistor (RV) and apre-charging switch (SV). The invention further relates to a power supplying arrangement (5) for an electrical load and a method for connecting a loadto a high direct-current voltage source(B). In order to provide a pre-charging switch arrangement (1) by means of which acapacitor can be charged, the charge state of the capacitor can be detected and which ensures the greatest possible level of reliability, there is provision according to the invention for the pre-charging resistor(RV) to be at least indirectly connected to a device (3) for detecting the voltage (UV) acrossthe pre-charging resistor (RV). For the power supplying arrangement (5), there is provision for it to have a pre-charging switch arrangement (1) according to the invention which is connected parallel with a controllable switching element (S1, S2). For the method, there is provision according to the invention for the load to be connected to the high direct-current voltage source (B) depending on a voltage (Uv) across a pre-charging resistor (Rv) which is arranged between the high direct-current voltage source (B) and the load. |
