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１ 概述目前，国产的东风４Ｂ型内燃机车上显示机车状态的信号灯和电表、仪表照明所需的２４Ｖ直流以及机车无线电台所需的５０Ｖ直流都取自于新加装的ＪＫＷ—２Ａ型直流电源变换器（以下简称变换器）。加装目的是为了防止从９６Ｖ蓄电池组中取２４Ｖ和５０Ｖ电压时会造成部?
1 Overview At present, domestic DF4B diesel locomotive lights and meters on display status, 24V DC required for instrument lighting and locomotive radio station required 50V DC are taken from the newly installed JKW-2A DC power supply Converter (hereinafter referred to as converter). The purpose is to prevent installation of 96V battery from 24V and 50V voltage will cause the Department?