GE通用电气 Multilin 169系列 169-10C-120 多路继电器

GE通用电气 Multilin 169系列 169-10C-120 多路继电器

GE通用电气 Multilin 169系列 169-10C-120 多路继电器

1．输入侧交流接触器

　　输入侧交流接触器安装在变频器的输入端，它既可以远距离接通和分断三相交流电源，在变频器出现故障时还可以及时切断输入电源。

　　输入侧交流接触器的主触点接在变频器输入侧，主触点额定电流，IKN可根据下式选择

　　IKN≥ICN

　　式中ICN-变频器的额定电流 A。

2．输出侧交流接触器

　　当变频器用于工频/变频切换时，变频器输出端需接输出侧交流接触器。

　　由于变频器输出电流中含有较多的谐波成分，其电流有效值略大于工频运行的有效值，故输出侧交流接触器的主触点额定电流应选大些。输出侧交流接触器的主触点额定电流IKN可根据下式选

GE通用电气 Multilin 169系列 169-10C-120 多路继电器

1. Input side AC contactor

The input side AC contactor is installed in the input end of the inverter, which can be connected and disconnected from the three-phase AC power supply at a distance, and can also cut off the input power supply in time when the inverter fails.

The main contact of the AC contactor on the input side is connected to the input side of the inverter. The rated current of the main contact can be selected by IKN according to the following formula

IKN≥ICN

Where ICN- rated current of frequency converter A.

2. Output side AC contactor

When the inverter is used for power frequency/frequency conversion switching, the output end of the inverter needs to be connected to the output side of the AC contactor.

Because the output current of the inverter contains more harmonic components, the effective value of the current is slightly greater than the effective value of the power frequency operation, so the rated current of the main contact of the output side of the AC contactor should be larger. The rated current IKN of the main contact of the output AC contactor can be selected according to the following formula