EM500 Open-Loop Vector Control Inverter User Manual Note: 1. Take the voltage drop into consideration for selecting cable. Generally speaking, the voltage drop value calculated by the following formula shall be less than 5V. (A) *10 -3 Voltage drop = 3 *Cable Resistivity (Ω/KM) * Cable Length (m) * Rated Current 2. If power cable is laid in a plastic duct, it shall be one grade higher. 3. Cable shall be connected to round wiring terminals of applicable cable and terminal screw. 4. The size of grounding cable should be the same as the power cable if the selected power cable is less than 16 mm 2 , or not less than 1/2 of the power cable if the selected power cable is greater than 16 mm 2 .
Anyway, at least 16 mm 2 is a must. 3.2.8 Grounding Cable Ground terminal must be grounded. The third type grounding method specially (grounding resistance less than 10 Ω) must be adopted. Never share the grounding cable with welder or power device. 46 EM500-090G/110P-3 EM500-110G/132P-3 90 EM500-132G/160P-3 EM500-160G/185P-3 M12 31.0 –39.0 120 EM500-185G/200P-3 180 EM500-200G/220P-3 EM500-220G/250P-3 2*M10 17.0 – 22.0 2*120 EM500-250G/280P-3 EM500-280G/315P-3 2*150 EM500-315G/355P-3 2*M12 31.0 – 39.0 EM500-355G/400P-3 EM500-400G/450P-3 2*180 EM500-450G/500P-3 2*M16 45.0 – 55.0 2*270 EM500-500G/560P-3 EM500-560G/630P-3