... section 12 meters long, a material part of a long 3 m; rack with 40 × 80 mm welded square pass, the ... high-temperature insulation to prevent rust oxidation; bottom with insulation. (3) electrical parts: power supply 380V, 30A, three-phase five- ... control, leakage protection function, the internal temperature difference of ± 3 degrees; other Control circuit devices are controlled by Mitsubishi Electric ...