P-164000249 30–50kW 21Revision 1 User's and Installation Guide• Specification is for copper wire with a 90°C rating.• The bypass feed into this equipment uses three or four wires. The rectifier feed into thisequipment uses three wires. The phases must be symmetrical about ground (from a Wyesource) for proper equipment operation.• If the load requires a neutral, a bypass source neutral must be provided. If the load does notrequire a neutral and there is no neutral conductor connected at the bypass input, a neutral mustbe installed to source star point.• A readily accessible disconnect device must be incorporated in all fixed input wiring.UPSRatingRectifier input Bypass input UPS output(380/400/415V)PE BatteryFuse Cable Fuse Cable Cable I nominal Cable Fuse Cable30kW 3x 63 A 4x 16mm²3x 63 A 4x 16mm²4x 16mm²46/44/42A16 mm² 125 A 35 mm²40kW 3x 80 A 4x 25mm²3x 80 A 4x 25mm²4x 25mm²62/59/56A15 mm² 160 A 50 mm²50kW 3x 100 A 4x 35mm²3x 100 A 4x 35mm²4x 35mm²77/74/71A35 mm² 200 A 70 mm²Maximum 4x 50mm²4x 50mm²4x 50mm²35 mm² 95 mm²Table 3-5: Recommended multi-core cable and fuse sizes for 30-50kW UPSRatedpowerRatedvoltageRectifier input UPS Output/ Bypass BatteryRatedcurrentMax.currentRatedcurrentMax. current RatedcurrentMax.current30kW 380 V 48 57 46 55 73 95400 V 46 54 44 52 73 95415 V 44 52 42 50 73 9540kW 380 V 64 76 62 73 97 126400 V 61 72 59 70 97 126415 V 58 69 56 66 97 12650kW 380 V 80 95 77 91 121 158400 V 76 90 74 87 121 158
