压缩机主电源为AC(380V/50Hz)三相，冷冻干燥机为AC（220V/50HZ）请确认电源。

The main power supply of the compressor is AC (380V/50Hz), and the freeze dryer is AC (220V/50HZ). Please confirm the power supply.

电压降不能超过额定电压的5%，各相电压差在3%以内。

The voltage drop should not exceed 5% of the rated voltage, and the voltage difference of each phase should be less than 3%.

压缩机电源必须使用配有隔离开关，以防止短路产生缺相运行。

The power supply of compressor must be equipped with isolation switch to prevent short circuit from running out of phase.

检查次回路保险丝，根据压缩机的功率大小选择适当的无熔丝保险开关。

Check the secondary circuit fuse and select the appropriate fuse-free fuse switch according to the power of the compressor.

压缩机最好单独使用一套电力系统，避免与其他不同电力消耗系统并联使用，特别当压缩机的功率较大时可能会因过大的电压降或三相电流不平衡而形成压缩机过载使保护装置动作跳机。

Compressors should use a single power system to avoid parallel use with other different power consumption systems. Especially when the compressor's power is large, it may cause compressor overload or three-phase current imbalance to cause protection device to jump.

必须接地线防止漏电造成危险，切不可接在空气输送管或冷却水管上。

Grounding wires must be used to prevent leakage from causing danger. They must not be connected to air conveyor pipes or cooling pipes.