Abstract: To meet the running status data need for fault diagnosis of marine electric equipment，a kind of running status data recorder of marine electric equipment was designed. The electrical equipment record circuit was analyzed；the data collection circuit，time reference circuit，SD card storage circuit and corresponding software were designed. The monitoring on analog quantity，switch quantity and environmental parameters for electric equipment running was realized. Time tag and realtime storage of collected data were achieved. With the software developed，the stored data could intuitively reflect the equipment running status. The experimental results showed the availability and feasibility of the running status monitoring recorder of electrical equipment.

Key words: electrical equipment, running state, monitoring, SD card