Home / Standards / JB/T 5777.4-1992 JB/T 5777.4-1992 Abolished 电力系统用镉镍蓄电池直流系统电源屏(柜) Standard Type JB ICS N/A CCS N/A Status Abolished Issue Date 1992-06-26 Implementation 1993-01-01 Centralized Committee 机械工业部 Issuing Authority 机械工业部