An apparatus for emergency supply of an electrically driven tool.

摘要

An apparatus for emergency power supply of an electrically energized tool (10) comprising a terminal means (11) for connection to the mains network, a battery means (22) with a battery charging device (7) connected to said terminal means (11), a controller (9) for controlling the energization of said tool (10), a monitor means (2) for monitoring said tool energization from the mains network having an output indicating failure of energization from the mains network, and a switching device with a selector switch for connecting the battery means (22) into said tool energization having an input for said monitor means output (2). In the apparatus in said switching device with said selector switch for connecting the battery means (22) into said tool a switch (8) is ganged in order to connect the battery means (22) into the energization of said controller (9). Also in the apparatus the energization line (14) of said tool (10) from said battery means (22) includes a power supply determining element (5), suitable for control from said controller (9).