Title: 36 Siemens GDB181-MO.pdf.pdf
5.2 Electrical installation / cabling 5.2.1 Power supply cablingThe permissible cable lengths and cross-sectional areas depend on the actuators’ current draw and the voltage drop on the connecting lines to the actuators. The necessary cable lengths can be determined from the following chart or with the help of the formulas. Cf. also to technical data in section 9.When determining the cable length and the cross-sectional area, it is to ensure that the permissible tolerances of the actuators’ operating voltage are adhered to, in addition to the permissible voltage drop on the power supply and signal lines (see table below).The cables are to be sized depending on the type of actuator used and based on the following data:TypeOperating VoltageLineMax. permissible voltage dropGDB181.. / GLB181.. AC 24 VG0, GSystem voltage AC 24 VThe power supply voltage drop at AC 24 V must not exceed 8 % (4 % over the G0).