This article expounds the operation condition and principle of logic control unit on electric locomotive. Combined the recon struction on type SS 8 lo como tive,the feasibility of logic control unit is proved.

• 阐述逻辑控制装置在电力机车上的运用以及机车逻辑控制装置的原理,同时结合SS8型机车上改装运用情况对机车逻辑控制装置的可行性进行论证。