Selection of the cross section of the cable and the introductory machine for the installation for blowing PET
Hello, they are going to put a PET blowing machine at the enterprise. The unit will work together with a cooler (chiller). Cooler power 10 kW - 380V connection type 3Ph + PE. The power of the installation itself is 65 kW - 380V connection type 3Ph + N + PE. I am a little confused in the calculations. What introductory machines are needed for these installations and what is the best choice for the copper cable cross-section for them? Thank you in advance.
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Hello! A general automatic machine for introduction into 125 amperes is a copper cable of 50 mm2 (this is not taking into account the length), for a chiller automatic machine is 16 amperes a copper cable 2.5 mm2 (excluding lengths), for a machine an automatic machine is 100 amperes copper cable 35 mm2 (excluding lengths). The environment (cabinet, remote control) of the machines should not exceed 30 degrees, otherwise their ratings must be increased. I repeat once again that when choosing the cable section, its length was not taken into account, since you did not specify it, the greater the length, the greater the loss in the cable and the corresponding section