| 摘要 |
The invention relates to a protection system (102) for an electrical appliance (100) powered by an installable battery pack (200). The protection system comprises a control device (150), wherein the control device (150) is designed to activate the electrical appliance (100), when the battery pack (200) is installed, by actuation of a main switch (140), and wherein a contact device (101) of the electrical appliance (100) and a contact device (201) of the battery pack (200) comprise contact elements (111, 112, 121, 122, 123, 211, 212, 221, 222, 223) that complement each other, each of which forms a first and a second interface (110, 120, 210, 220) to establish a first and a second electrical connection (301, 302) between the electrical appliance (100) and the battery pack (200). The contact devices (101, 102) are designed, on installation of the battery pack (200), to establish the first electrical connection (301) before the second electrical connection (302). Furthermore, the control device (150) is designed to suppress the activation of the electrical appliance (100) if the first electrical connection (101) is established before the second electrical connection (102) provided the main switch (140) is actuated. |
