A robot system comprising: (I) a robot for guiding an application part , wherein the robot comprises: (a) a robot arm comprising: a base ; a region which is proximal to the base ; a region which is distal to the base ; and a mounting device for mounting the application part , in particular in a releasable manner, wherein the mounting device is arranged in the distal region ; (b) an electrical grounding ; and (c) a cable for connection to the application part and a control device , in particular in a releasable manner, comprising: at least one signal line and / or at least one power supply line ; a protective conductor ; a distal connection means for electrically connecting the application part to the cable , in particular in a releasable manner; and a proximal connection means for electrically connecting the control device to the cable , in particular in a releasable manner; and (II) an adapter , characterised in that the adapter comprises an electrical line for the electrical connection of the protective conductor of the cable to the electrical grounding of the robot , in particular in a releasable manner. (I) a robot for guiding an application part , wherein the robot comprises: (a) a robot arm comprising: a base ; a region which is proximal to the base ; a region which is distal to the base ; and a mounting device for mounting the application part , in particular in a releasable manner, wherein the mounting device is arranged in the distal region ; (b) an electrical grounding ; and (c) a cable for connection to the application part and a control device , in particular in a releasable manner, comprising: at least one signal line and / or at least one power supply line ; a protective conductor ; a distal connection means for electrically connecting the application part to the cable , in particular in a releasable manner; and a proximal connection means for electrically connecting the control device to the cable , in particular in a releasable manner; and (a) a robot arm comprising: a base ; a region which is proximal to the base ; a region which is distal to the base ; and a mounting device for mounting the application part , in particular in a releasable manner, wherein the mounting device is arranged in the distal region ; a base ; a region which is proximal to the base ; a region which is distal to the base ; and a mounting device for mounting the application part , in particular in a releasable manner, wherein the mounting device is arranged in the distal region ; (b) an electrical grounding ; and (c) a cable for connection to the application part and a control device , in particular in a releasable manner, comprising: at least one signal line and / or at least one power supply line ; a protective conductor ; a distal connection means for electrically connecting the application part to the cable , in particular in a releasable manner; and a proximal connection means for electrically connecting the control device to the cable , in particular in a releasable manner; and at least one signal line and / or at least one power supply line ; a protective conductor ; a distal connection means for electrically connecting the application part to the cable , in particular in a releasable manner; and a proximal connection means for electrically connecting the control device to the cable , in particular in a releasable manner; and (II) an adapter , characterised in that the adapter comprises an electrical line for the electrical connection of the protective conductor of the cable to the electrical grounding of the robot , in particular in a releasable manner. <EOS>