| 摘要 |
<p>The system has a suction device (31) for discharging dirt accumulated in a tool-sided dirt collection device (21) i.e. collector ring. An electrical outlet (35) is provided for an electrical line (15) that extends away from a housing (14) of an electric hand tool (11) e.g. diamond drill. The outlet is present at the suction device for supplying the hand tool. A switching device selectively provides an alternating current voltage or a direct current voltage to the outlet. An energy storage e.g. lithium-ion-battery cells, of the suction device is rechargeable by a charger.</p> |
