ABB CI855-1

是一种二极管模块，是逆变器和变频器中常用的元件之一。这些模块通常由多个二极管组成，用于整流或逆变交流电源，以实现电气设备的变速和变压等功能。

It is a diode module and one of the commonly used components in inverters and frequency converters. These modules are usually composed of multiple diodes, used for rectifying or inverting AC power supplies to achieve functions such as variable speed and voltage of electrical equipment.